astroid’s ChangeLog#

What’s New in astroid 3.2.0?#

Release date: TBA

  • igetattr() returns the last same-named function in a class (instead of the first). This avoids false positives in pylint with @overload.

    Closes #1015 Refs pylint-dev/pylint#4696

  • Adds module_denylist to AstroidManager for modules to be skipped during AST generation. Modules in this list will cause an AstroidImportError to be raised when an AST for them is requested.

    Refs pylint-dev/pylint#9442

What’s New in astroid 3.1.1?#

Release date: TBA

What’s New in astroid 3.1.0?#

Release date: 2024-02-23

  • Include PEP 695 (Python 3.12) generic type syntax nodes in get_children(), allowing checkers to visit them.

    Refs pylint-dev/pylint#9193

  • Add __main__ as a possible inferred value for __name__ to improve control flow inference around if __name__ == "__main__": guards.

    Closes #2071

  • Following a deprecation period, the names arg to the Import constructor and the op arg to the BoolOp constructor are now required, and the doc args to the PartialFunction and Property constructors have been removed (call postinit(doc_node=...) instead.)

  • Following a deprecation announced in astroid 1.5.0, the alias AstroidBuildingException is removed in favor of AstroidBuildingError.

  • Include modname in AST warnings. Useful for invalid escape sequence warnings with Python 3.12.

  • RecursionError is now trapped and logged out as UserWarning during astroid node transformations with instructions about raising the system recursion limit.

    Closes pylint-dev/pylint#8842

  • Suppress SyntaxWarning for invalid escape sequences on Python 3.12 when parsing modules.

    Closes pylint-dev/pylint#9322

What’s New in astroid 3.0.3?#

Release date: 2024-02-04

  • Fix type of UnicodeDecodeError.object inferred as str instead of bytes.

    Closes pylint-dev/pylint#9342

  • Fix no-member false positives for args and kwargs on ParamSpec under Python 3.12.

    Closes pylint-dev/pylint#9401

What’s New in astroid 3.0.2?#

Release date: 2023-12-12

  • Avoid duplicate inference results for some uses of typing.X constructs like Tuple[Optional[int], ...]. This was causing pylint to occasionally omit messages like deprecated-typing-alias.

    Closes pylint-dev/pylint#9220

What’s New in astroid 3.0.1?#

Release date: 2023-10-15

  • Fix crashes linting code using PEP 695 (Python 3.12) generic type syntax.

    Closes pylint-dev/pylint#9098

What’s New in astroid 3.0.0?#

Release date: 2023-09-26

  • Add support for Python 3.12, including PEP 695 type parameter syntax.

    Closes #2201

  • Remove support for Python 3.7.

    Refs #2137

  • Use the global inference cache when inferring, even without an explicit InferenceContext. This is a significant performance improvement given how often methods default to None for the context argument. (Linting astroid itself now takes ~5% less time on Python 3.12; other projects requiring more complex inference calculations will see greater speedups.)

    Refs #529

  • Following a deprecation period starting in astroid 2.7.0, the astroid.node_classes and astroid.scoped_nodes modules have been removed in favor of astroid.nodes.node_classes and astroid.nodes.scoped_nodes.

    Closes #1072

  • Following a deprecation period starting in astroid 2.12.0, the astroid.mixins module has been removed in favor of astroid.nodes._base_nodes (private).

    Refs #1633

  • Return all existing arguments when calling Arguments.arguments(). This also means find_argname will now use the whole list of arguments for its search.

    Closes #2213

  • Exclude class attributes from the __members__ container of an Enum class when they are nodes.AnnAssign nodes with no assigned value.

    Refs pylint-dev/pylint#7402

  • Remove @cached and @cachedproperty decorator (just use @cached_property from the stdlib).

    Closes #1780 Refs #2140

  • Remove the inference module. Node inference methods are now in the module defining the node, rather than being associated to the node afterward.

    Closes #679

  • Move LookupMixIn to astroid.nodes._base_nodes and make it private.

  • Remove the shims for OperationError, BinaryOperationError, and UnaryOperationError in exceptions. They were moved to util in astroid 1.5.0.

  • Move safe_infer() from helpers to util. This avoids some circular imports.

  • Reduce file system access in ast_from_file().

  • Reduce time to import astroid by delaying astroid_bootstrapping() until the first instantiation of AstroidBuilder.

    Closes #2161

  • Make igetattr() idempotent. This addresses some reports of varying results when running pylint with --jobs.

    Closes pylint-dev/pylint#4356 Refs #7

  • Fix incorrect cache keys for inference results, thereby correctly inferring types for calls instantiating types dynamically.

    Closes #1828 Closes pylint-dev/pylint#7464 Closes pylint-dev/pylint#8074

  • Fix interrupted InferenceContext call chains, thereby addressing performance problems when linting sqlalchemy.

    Closes pylint-dev/pylint#8150

  • nodes.FunctionDef no longer inherits from nodes.Lambda. This is a breaking change but considered a bug fix as the nodes did not share the same API and were not interchangeable.

    We have tried to minimize the amount of breaking changes caused by this change but some are unavoidable.

  • infer_call_result now shares the same interface across all implementations. Namely: ```python def infer_call_result(

    self, caller: SuccessfulInferenceResult | None, context: InferenceContext | None = None,

    ) -> Iterator[InferenceResult]:


    This is a breaking change for nodes.FunctionDef where previously caller had a default of None. Passing None again will not create a behaviour change. The breaking change allows us to better type and re-use the method within astroid.

  • Improved signature of the __init__ and __postinit__ methods of most nodes. This includes making lineno, col_offset, end_lineno, end_col_offset and parent required arguments for nodes.NodeNG and its subclasses. For most other nodes, arguments of their __postinit__ methods have been made required to better represent how they would normally be constructed by the standard library ast module. The following nodes were changed or updated: - nodes.AnnAssign - nodes.Arguments - nodes.Assign - nodes.AssignAttr - nodes.AssignName - nodes.Attribute - nodes.AugAssign - nodes.Await - nodes.BaseContainer - nodes.BinOp - nodes.Call - nodes.ClassDef - nodes.Compare - nodes.Comprehension - nodes.Decorators - nodes.Delete - nodes.DelAttr - nodes.DelName - nodes.Dict - nodes.DictComp - nodes.ExceptHandler - nodes.Expr - nodes.For - nodes.FunctionDef - nodes.GeneratorExp - nodes.If - nodes.IfExp - nodes.Keyword - nodes.Lambda - nodes.ListComp - nodes.Module - nodes.Name - nodes.NodeNG - nodes.Raise - nodes.Return - nodes.SetComp - nodes.Slice - nodes.Starred - objects.Super, we also added the call parameter to its __init__ method. - nodes.Subscript - nodes.UnaryOp - nodes.While - nodes.Yield

    These changes involve breaking changes to their API but should be considered bug fixes. We now make arguments required when they are instead of always providing defaults.

  • nodes.If.self.is_orelse has been removed as it was never set correctly and therefore provided a false value.

  • Remove dependency on wrapt.

  • Remove dependency on lazy_object_proxy. This includes the removal of the associated lazy_import, lazy_descriptor and proxy_alias utility functions.

  • CallSite._unpack_args and CallSite._unpack_keywords now use safe_infer() for better inference and fewer false positives.

    Closes pylint-dev/pylint#8544

  • Add attr.Factory to the recognized class attributes for classes decorated with attrs.

    Closes pylint-dev/pylint#4341

  • infer_property() now observes the same property-specific workaround as infer_functiondef.

    Refs #1490

  • Remove unused and / or deprecated constants: - astroid.bases.BOOL_SPECIAL_METHOD - astroid.bases.BUILTINS - astroid.const.BUILTINS - astroid.const.PY38_PLUS - astroid.const.Load - astroid.const.Store - astroid.const.Del

    Refs #2141

  • frame() raises ParentMissingError and statement() raises StatementMissing for missing parents regardless of the value of the future argument (which gave this behavior already).

    The future argument to each method is deprecated and will be removed in astroid 4.0.

    Refs #1217

  • Remove deprecated Ellipsis, ExtSlice, Index nodes.

    Refs #2152

  • Remove deprecated is_sys_guard and is_typing_guard methods.

    Refs #2153

  • Remove deprecated doc attribute for Module, ClassDef, and FunctionDef. Use the doc_node attribute instead.

    Refs #2154

  • Add new nodes.Try to better match Python AST. Replaces the TryExcept and TryFinally nodes which have been removed.

  • Publicize NodeNG.repr_name() to facilitate finding a node’s nice name.

    Refs pylint-dev/pylint#8598

  • Fix false positives for no-member and invalid-name when using the _name_, _value_ and _ignore_ sunders in Enums.

    Closes pylint-dev/pylint#9015

What’s New in astroid 2.15.8?#

Release date: 2023-09-26

  • Fix a regression in 2.15.7 for unsubscriptable-object.

    Closes #2305 Closes pylint-dev/pylint#9069

  • Fix a regression in 2.15.7 for unsubscriptable-object.

    Closes #2305 Closes pylint-dev/pylint#9069

What’s New in astroid 2.15.7?#

Release date: 2023-09-23

  • Fix a crash when inferring a typing.TypeVar call.

    Closes pylint-dev/pylint#8802

  • Infer user-defined enum classes by checking if the class is a subtype of enum.Enum.

    Closes pylint-dev/pylint#8897

  • Fix inference of functions with @functools.lru_cache decorators without parentheses.

    Closes pylint-dev/pylint#8868

  • Make sys.argv uninferable because it never is. (It’s impossible to infer the value it will have outside of static analysis where it’s our own value.)

    Refs pylint-dev/pylint#7710

What’s New in astroid 2.15.6?#

Release date: 2023-07-08

  • Harden get_module_part() against ".".

    Closes pylint-dev/pylint#8749

  • Allow AsStringVisitor to visit objects.PartialFunction.

    Closes pylint-dev/pylint#8881

  • Avoid expensive list/tuple multiplication operations that would result in MemoryError.

    Closes pylint-dev/pylint#8748

  • Fix a regression in 2.12.0 where settings in AstroidManager would be ignored. Most notably this addresses pylint-dev/pylint#7433.

    Refs #2204

What’s New in astroid 2.15.5?#

Release date: 2023-05-14

  • Handle objects.Super in helpers.object_type().

    Refs pylint-dev/pylint#8554

  • Recognize stub pyi Python files.

    Refs pylint-dev/pylint#4987

What’s New in astroid 2.15.4?#

Release date: 2023-04-24

  • Add visitor function for TryStar to AsStringVisitor and add TryStar to astroid.nodes.ALL_NODE_CLASSES.

    Refs #2142

What’s New in astroid 2.15.3?#

Release date: 2023-04-16

  • Fix infer_call_result() crash on methods called with_metaclass().

    Closes #1735

  • Suppress UserWarning when finding module specs.

    Closes pylint-dev/pylint#7906

What’s New in astroid 2.15.2?#

Release date: 2023-04-03

  • Support more possible usages of attrs decorators.

    Closes pylint-dev/pylint#7884

What’s New in astroid 2.15.1?#

Release date: 2023-03-26

  • Restore behavior of setting a Call as a base for classes created using six.with_metaclass(), and harden support for using enums as metaclasses in this case.

    Reverts #1622 Refs pylint-dev/pylint#5935 Refs pylint-dev/pylint#7506

What’s New in astroid 2.15.0?#

Release date: 2023-03-06

  • astroid now supports TryStar nodes from python 3.11 and should be fully compatible with python 3.11.

    Closes #2028

  • Formattedvalue.postinit is now keyword only. This is to allow correct typing of the Formattedvalue class.

    Refs #1516

  • Astroid now supports custom import hooks.

    Refs pylint-dev/pylint#7306

  • astroid now infers return values from match cases.

    Refs pylint-dev/pylint#5288

  • AstroidManager.clear_cache now also clears the inference context cache.

    Refs #1780

  • max_inferable_values can now be set on AstroidManager instances, e.g. astroid.MANAGER besides just the AstroidManager class itself.

    Closes #2280

  • Astroid now retrieves the default values of keyword only arguments and sets them on Arguments.kw_defaults.

  • Uninferable now has the type UninferableBase. This is to facilitate correctly type annotating code that uses this singleton.

    Closes #1680

  • Deprecate modutils.is_standard_module(). It will be removed in the next minor release. Functionality has been replaced by two new functions, modutils.is_stdlib_module() and modutils.module_in_path().

    Closes #2012

  • Fix are_exclusive function when a walrus operator is used inside IfExp.test field.

    Closes #2022

What’s New in astroid 2.14.2?#

Release date: 2023-02-12

  • ‘_infer_str_format_call’ won’t crash anymore when the string it analyses are uninferable.

    Closes pylint-dev/pylint#8109

What’s New in astroid 2.14.1?#

Release date: 2023-01-31

  • Revert CallContext change as it caused a RecursionError regression.

What’s New in astroid 2.14.0?#

Release date: 2023-01-31

  • Add support for inferring binary union types added in Python 3.10.

    Refs pylint-dev/pylint#8119

  • Capture and log messages emitted when inspecting a module for astroid.

    Closes #1904

What’s New in astroid 2.13.5?#

Release date: 2023-01-31

  • Revert CallContext change as it caused a RecursionError regression.

What’s New in astroid 2.13.4?#

Release date: 2023-01-31

  • Fix issues with typing_extensions.TypeVar.

  • Fix ClassDef.fromlino for PyPy 3.8 (v7.3.11) if class is wrapped by a decorator.

  • Preserve parent CallContext when inferring nested functions.

    Closes pylint-dev/pylint#8074

  • Add Lock to the multiprocessing brain.

    Closes pylint-dev/pylint#3313

What’s New in astroid 2.13.3?#

Release date: 2023-01-20

  • Fix a regression in 2.13.2 where a RunTimeError could be raised unexpectedly.

    Closes #1958

  • Fix overwritten attributes in inherited dataclasses not being ordered correctly.

    Closes pylint-dev/pylint#7881

  • Fix a false positive when an attribute named Enum was confused with enum.Enum. Calls to Enum are now inferred & the qualified name is checked.

    Refs pylint-dev/pylint#5719

  • Remove unnecessary typing_extensions dependency on Python 3.11 and newer

What’s New in astroid 2.13.2?#

Release date: 2023-01-08

  • Removed version conditions on typing_extensions dependency. Removed typing_extensions from our tests requirements as it was preventing issues to appear in our continuous integration.

    Closes #1945

What’s New in astroid 2.13.1?#

Release date: 2023-01-08

  • Bumping typing_extensions to 4.0.0 that is required when using Self

    Closes #1942

What’s New in astroid 2.13.0?#

Release date: 2023-01-07

  • Fixed importing of modules that have the same name as the file that is importing. astroid will now correctly handle an import math statement in a file called by relying on the import system.

    Refs pylint-dev/pylint#5151

  • Create ContextManagerModel and let GeneratorModel inherit from it.

    Refs pylint-dev/pylint#2567

  • Added a regex brain.

    Refs pylint-dev/pylint#1911

  • Support “is None” constraints from if statements during inference.

    Ref #791 Ref pylint-dev/pylint#157 Ref pylint-dev/pylint#1472 Ref pylint-dev/pylint#2016 Ref pylint-dev/pylint#2631 Ref pylint-dev/pylint#2880

What’s New in astroid 2.12.14?#

Release date: 2023-01-06

  • Handle the effect of properties on the __init__ of a dataclass correctly.

    Closes pylint-dev/pylint#5225

  • Handle the effect of kw_only=True in dataclass fields correctly.

    Closes pylint-dev/pylint#7623

  • Handle the effect of init=False in dataclass fields correctly.

    Closes pylint-dev/pylint#7291

  • Fix crash if numpy module doesn’t have version attribute.

    Refs pylint-dev/pylint#7868

  • Handle AttributeError during str.format template inference tip evaluation

    Closes pylint-dev/pylint#1902

  • Add the masked_invalid function in the brain.

    Closes pylint-dev/pylint#5715

What’s New in astroid 2.12.13?#

Release date: 2022-11-19

  • Prevent returning an empty list for ClassDef.slots() when the mro list contains one class & it is not object.

    Refs pylint-dev/pylint#5099

  • Prevent a crash when inferring calls to str.format with inferred arguments that would be invalid.

    Closes #1856

  • Infer the length argument of the random.sample function.

    Refs pylint-dev/pylint#7706

  • Catch ValueError when indexing some builtin containers and sequences during inference.

    Closes #1843

What’s New in astroid 2.12.12?#

Release date: 2022-10-19

  • Add the length parameter to hash.digest & hash.hexdigest in the hashlib brain.

    Refs pylint-dev/pylint#4039

  • Prevent a crash when a module’s __path__ attribute is unexpectedly missing.

    Refs pylint-dev/pylint#7592

  • Fix inferring attributes with empty annotation assignments if parent class contains valid assignment.

    Refs pylint-dev/pylint#7631

What’s New in astroid 2.12.11?#

Release date: 2022-10-10

  • Add _value2member_map_ member to the enum brain.

    Refs pylint-dev/pylint#3941

  • Improve detection of namespace packages for the modules with __spec__ set to None.

    Closes pylint-dev/pylint#7488.

  • Fixed a regression in the creation of the __init__ of dataclasses with multiple inheritance.

    Closes pylint-dev/pylint#7434

What’s New in astroid 2.12.10?#

Release date: 2022-09-17

  • Fixed a crash when introspecting modules compiled by cffi.

    Closes #1776 Closes pylint-dev/pylint#7399

  • decorators.cached now gets its cache cleared by calling AstroidManager.clear_cache.

    Refs #1780

What’s New in astroid 2.12.9?#

Release date: 2022-09-07

  • Fixed creation of the __init__ of dataclassess with multiple inheritance.

    Closes pylint-dev/pylint#7427

  • Fixed a crash on namedtuples that use typename to specify their name.

    Closes pylint-dev/pylint#7429

What’s New in astroid 2.12.8?#

Release date: 2022-09-06

  • Fixed a crash in the dataclass brain for InitVars without subscript typing.

    Closes pylint-dev/pylint#7422

  • Fixed parsing of default values in dataclass attributes.

    Closes pylint-dev/pylint#7425

What’s New in astroid 2.12.7?#

Release date: 2022-09-06

  • Fixed a crash in the dataclass brain for uninferable bases.

    Closes pylint-dev/pylint#7418

What’s New in astroid 2.12.6?#

Release date: 2022-09-05

  • Fix a crash involving Uninferable arguments to namedtuple().

    Closes pylint-dev/pylint#7375

  • The dataclass brain now understands the kw_only keyword in dataclass decorators.

    Closes pylint-dev/pylint#7290

What’s New in astroid 2.12.5?#

Release date: 2022-08-29

  • Prevent first-party imports from being resolved to site-packages.

    Refs pylint-dev/pylint#7365

  • Fix astroid.interpreter._import.util.is_namespace() incorrectly returning True for frozen stdlib modules on PyPy.

    Closes #1755

What’s New in astroid 2.12.4?#

Release date: 2022-08-25

  • Fixed a crash involving non-standard type comments such as # type: # any comment.

    Refs pylint-dev/pylint#7347

What’s New in astroid 2.12.3?#

Release date: 2022-08-23

  • Fixed crash in ExplicitNamespacePackageFinder involving _SixMetaPathImporter.

    Closes #1708

  • Fix unhandled FutureWarning from pandas import in cython modules

    Closes #1717

  • Fix false positive with inference of type-annotated Enum classes.

    Refs pylint-dev/pylint#7265

  • Fix crash with inference of type-annotated Enum classes where the member has no value.

  • Fix a crash inferring invalid old-style string formatting with %.

    Closes #1737

  • Fix false positive with inference of http module when iterating HTTPStatus.

    Refs pylint-dev/pylint#7307

  • Bumped minimum requirement of wrapt to 1.14 on Python 3.11.

  • Don’t add dataclass fields annotated with KW_ONLY to the list of fields.

    Refs pylint-dev/pylint#5767

What’s New in astroid 2.12.2?#

Release date: 2022-07-12

  • Fixed crash in modulo operations for divisions by zero.

    Closes #1700

  • Fixed crash with recursion limits during inference.

    Closes #1646

What’s New in astroid 2.12.1?#

Release date: 2022-07-10

  • Fix a crash when inferring old-style string formatting (%) using tuples.

  • Fix a crash when None (or a value inferred as None) participates in a ** expression.

  • Fix a crash involving properties within if blocks.

What’s New in astroid 2.12.0?#

Release date: 2022-07-09

  • Fix signal has no connect member for PySide2 5.15.2+ and PySide6

    Closes #4040, #5378

  • astroid now requires Python 3.7.2 to run.

  • Avoid setting a Call as a base for classes created using six.with_metaclass().

    Refs pylint-dev/pylint#5935

  • Fix detection of builtins on PyPy 3.9.

  • Fix re brain on Python 3.11. The flags now come from re._compile.

  • Build nodes.Module for frozen modules which have location information in their ModuleSpec.

    Closes #1512

  • The astroid.mixins module has been deprecated and marked for removal in 3.0.0.

    Closes #1633

  • Capture and log messages emitted by C extensions when importing them. This prevents contaminating programmatic output, e.g. pylint’s JSON reporter.

    Closes pylint-dev/pylint#3518

  • Calls to str.format are now correctly inferred.

    Closes #104, Closes #1611

  • __new__ and __init__ have been added to the ObjectModel and are now inferred as BoundMethods.

  • Old style string formatting (using % operators) is now correctly inferred.

    Closes #151

  • Adds missing enums from ssl module.

    Closes pylint-dev/pylint#3691

  • Remove dependency on pkg_resources from setuptools.

    Closes #1103

  • Allowed AstroidManager.clear_cache to reload necessary brain plugins.

  • Fixed incorrect inferences after rebuilding the builtins module, e.g. by calling AstroidManager.clear_cache.

    Closes #1559

  • Arguments.defaults is now None for uninferable signatures.

  • On Python versions >= 3.9, astroid now understands subscripting builtin classes such as enumerate or staticmethod.

  • Fixed inference of Enums when they are imported under an alias.

    Closes pylint-dev/pylint#5776

  • Rename ModuleSpec -> module_type constructor parameter to match attribute name and improve typing. Use type instead.

  • ObjectModel and ClassModel now know about their __new__ and __call__ attributes.

  • Fixed pylint not-callable false positive with nested-tuple assignment in a for-loop.

    Refs pylint-dev/pylint#5113

  • Instances of builtins created with __new__(cls, value) are now inferred.

  • Infer the return value of the .copy() method on dict, list, set, and frozenset.

    Closes #1403

  • Fixed inference of elements of living container objects such as tuples and sets in the sys and ssl modules.

  • Add pathlib brain to handle pathlib.PurePath.parents inference.

    Closes pylint-dev/pylint#5783

  • Avoid inferring the results of ** operations involving values greater than 1e5 to avoid expensive computation.

    Closes pylint-dev/pylint#6745

  • Fix test for Python 3.11. In some instances err.__traceback__ will be uninferable now.

  • Add brain for numpy core module einsumfunc.

    Closes pylint-dev/pylint#5821

  • Infer the DictUnpack value for Dict.getitem calls.

    Closes #1195

  • Fix a crash involving properties within try ... except blocks.

    Closes pylint-dev/pylint#6592

  • Prevent creating Instance objects that proxy other Instance``s when there is ambiguity (or user error) in calling ``__new__(cls).

    Refs pylint-dev/pylint#7109

What’s New in astroid 2.11.7?#

Release date: 2022-07-09

  • Added support for usedforsecurity keyword to hashlib constructors.

    Closes pylint-dev/pylint#6017

  • Updated the stdlib brain for subprocess.Popen to accommodate Python 3.9+.

    Closes pylint-dev/pylint#7092

What’s New in astroid 2.11.6?#

Release date: 2022-06-13

  • The Qt brain now correctly treats calling .disconnect() (with no arguments) on a slot as valid.

  • The argparse brain no longer incorrectly adds "Namespace" to the locals of functions that return an argparse.Namespace object.

    Refs pylint-dev/pylint#6895

What’s New in astroid 2.11.5?#

Release date: 2022-05-09

  • Fix crash while obtaining object_type() of an Unknown node.

    Refs pylint-dev/pylint#6539

  • Fix a bug where in attempting to handle the patching of distutils by virtualenv, library submodules called distutils (e.g. numpy.distutils) were included also.

    Refs pylint-dev/pylint#6497

What’s New in astroid 2.11.4?#

Release date: 2022-05-02

  • Fix col_offset attribute for nodes involving with on PyPy.

  • Fixed a crash involving two starred expressions: one inside a comprehension, both inside a call.

    Refs pylint-dev/pylint#6372

  • Made FunctionDef.implicit_parameters return 1 for methods by making FunctionDef.is_bound return True, as it does for class methods.

    Closes pylint-dev/pylint#6464

  • Fixed a crash when _filter_stmts encounters an EmptyNode.

    Closes pylint-dev/pylint#6438

What’s New in astroid 2.11.3?#

Release date: 2022-04-19

  • Fixed an error in the Qt brain when building instance_attrs.

    Closes pylint-dev/pylint#6221

  • Fixed a crash in the gi brain.

    Closes pylint-dev/pylint#6371

What’s New in astroid 2.11.2?#

Release date: 2022-03-26

  • Avoided adding the name of a parent namedtuple to its child’s locals.

    Refs pylint-dev/pylint#5982

What’s New in astroid 2.11.1?#

Release date: 2022-03-22

  • Promoted getattr() from astroid.scoped_nodes.FunctionDef to its parent astroid.scoped_nodes.Lambda.

  • Fixed crash on direct inference via nodes.FunctionDef._infer.

    Closes #817

What’s New in astroid 2.11.0?#

Release date: 2022-03-12

  • Add new (optional) doc_node attribute to nodes.Module, nodes.ClassDef, and nodes.FunctionDef.

  • Accessing the doc attribute of nodes.Module, nodes.ClassDef, and nodes.FunctionDef has been deprecated in favour of the doc_node attribute. Note: doc_node is an (optional) nodes.Const whereas doc was an (optional) str.

  • Passing the doc argument to the __init__ of nodes.Module, nodes.ClassDef, and nodes.FunctionDef has been deprecated in favour of the postinit doc_node attribute. Note: doc_node is an (optional) nodes.Const whereas doc was an (optional) str.

  • Replace custom cachedproperty with functools.cached_property and deprecate it for Python 3.8+.

    Closes #1410

  • Set end_lineno and end_col_offset attributes to None for all nodes with PyPy 3.8. PyPy 3.8 assigns these attributes inconsistently which could lead to unexpected errors. Overwriting them with None will cause a fallback to the already supported way of PyPy 3.7.

  • Add missing shape parameter to numpy zeros_like, ones_like, and full_like methods.

    Closes pylint-dev/pylint#5871

  • Only pin wrapt on the major version.

What’s New in astroid 2.10.0?#

Release date: 2022-02-27

  • Fixed inference of self in binary operations in which self is part of a list or tuple.

    Closes pylint-dev/pylint#4826

  • Fixed builtin inference on property calls not calling the postinit of the new node, which resulted in instance arguments missing on these nodes.

  • Fixed a crash on Super.getattr when the attribute was previously uninferable due to a cache limit size. This limit can be hit when the inheritance pattern of a class (and therefore of the __init__ attribute) is very large.

    Closes pylint-dev/pylint#5679

  • Include names of keyword-only arguments in astroid.scoped_nodes.Lambda.argnames.

    Closes pylint-dev/pylint#5771

  • Fixed a crash inferring on a NewType named with an f-string.

    Closes pylint-dev/pylint#5770

  • Add support for [attrs v21.3.0]( which added a new attrs module alongside the existing attr.

    Closes #1330

  • Use the end_lineno attribute for the NodeNG.tolineno property when it is available.

    Closes #1350

  • Add is_dataclass attribute to ClassDef nodes.

  • Use sysconfig instead of distutils to determine the location of python stdlib files and packages.

    Related pull requests: #1322, #1323, #1324 Closes #1282 Ref #1103

  • Fixed crash with recursion error for inference of class attributes that referenced the class itself.

    Closes pylint-dev/pylint#5408

  • Fixed crash when trying to infer items() on the __dict__ attribute of an imported module.

    Closes #1085

  • Add optional NodeNG.position attribute. Used for block nodes to highlight position of keyword(s) and name in cases where the AST doesn’t provide good enough positional information. E.g. nodes.ClassDef, nodes.FunctionDef.

  • Fix ClassDef.fromlineno. For Python < 3.8 the lineno attribute includes decorators. fromlineno should return the line of the class statement itself.

  • Performance improvements. Only run expensive decorator functions when non-default Deprecation warnings are enabled, eg. during a Pytest run.

    Closes #1383

What’s New in astroid 2.9.3?#

Release date: 2022-01-09

  • Fixed regression where packages without a file were not recognized or imported correctly.

    Closes #1327

What’s New in astroid 2.9.2?#

Release date: 2022-01-04

  • Fixed regression in astroid.scoped_nodes where _is_metaclass was not accessible anymore.

Closes #1325

What’s New in astroid 2.9.1?#

Release date: 2021-12-31

  • NodeNG.frame() and NodeNG.statement() will start raising ParentMissingError instead of AttributeError in astroid 3.0. This behaviour can already be triggered by passing future=True to a frame() or statement() call.

  • Prefer the module loader get_source() method in AstroidBuilder’s module_build() when possible to avoid assumptions about source code being available on a filesystem. Otherwise the source cannot be found and application behavior changes when running within an embedded hermetic interpreter environment (pyoxidizer, etc.).

  • Require Python 3.6.2 to use astroid.

  • Removed custom distutils handling for resolving paths to submodules.

    Ref #1321

  • Restore custom distutils handling for resolving paths to submodules.

    Closes pylint-dev/pylint#5645

  • Fix deque.insert() signature in collections brain.

    Closes #1260

  • Fix Module nodes not having a col_offset, end_lineno, and end_col_offset attributes.

  • Fix typing and update explanation for Arguments.args being None.

  • Fix crash if a variable named type is accessed with an index operator ([]) in a generator expression.

    Closes pylint-dev/pylint#5461

  • Enable inference of dataclass import from marshmallow_dataclass. This allows the dataclasses brain to recognize dataclasses annotated by marshmallow_dataclass.

  • Resolve symlinks in the import path Fixes inference error when the import path includes symlinks (e.g. Python installed on macOS via Homebrew).

    Closes #823 Closes pylint-dev/pylint#3499 Closes pylint-dev/pylint#4302 Closes pylint-dev/pylint#4798 Closes pylint-dev/pylint#5081

What’s New in astroid 2.9.0?#

Release date: 2021-11-21

  • Add end_lineno and end_col_offset attributes to astroid nodes.

  • Always treat __class_getitem__ as a classmethod.

  • Add missing as_string visitor method for Unknown node.

    Closes #1264

What’s New in astroid 2.8.6?#

Release date: 2021-11-21

  • Fix crash on inference of subclasses created from Class().__subclasses__

    Closes pylint-dev/pylint#4982

  • Fix bug with Python 3.7.0 / 3.7.1 and typing.NoReturn.

    Closes #1239

What’s New in astroid 2.8.5?#

Release date: 2021-11-12

  • Use more permissive versions for the typed-ast dependency (<2.0 instead of <1.5)

    Closes #1237

  • Fix crash on inference of __len__.

    Closes pylint-dev/pylint#5244

  • Added missing kind (for Const) and conversion (for FormattedValue) fields to repr.

  • Fix crash with assignment expressions, nested if expressions and filtering of statements

    Closes pylint-dev/pylint#5178

  • Fix incorrect filtering of assignment expressions statements

What’s New in astroid 2.8.4?#

Release date: 2021-10-25

  • Fix the scope() and frame() methods of NamedExpr nodes. When these nodes occur in Arguments, Keyword or Comprehension nodes these methods now correctly point to the outer-scope of the FunctionDef, ClassDef, or Comprehension.

  • Fix the set_local function for NamedExpr nodes. When these nodes occur in Arguments, Keyword, or Comprehension nodes these nodes are now correctly added to the locals of the FunctionDef, ClassDef, or Comprehension.

What’s New in astroid 2.8.3?#

Release date: 2021-10-17

  • Add support for wrapt 1.13

  • Fixes handling of nested partial functions

    Closes pylint-dev/pylint#2462 Closes #1208

  • Fix regression with the import resolver

    Closes pylint-dev/pylint#5131

  • Fix crash with invalid dataclass field call

    Closes pylint-dev/pylint#5153

What’s New in astroid 2.8.2?#

Release date: 2021-10-07

Same content than 2.8.2-dev0 / 2.8.1, released in order to fix a mistake when creating the tag.

What’s New in astroid 2.8.1?#

Release date: 2021-10-06

  • Adds support of type hints inside numpy’s brains.

    Closes pylint-dev/pylint#4326

  • Enable inference of dataclass import from pydantic.dataclasses. This allows the dataclasses brain to recognize pydantic dataclasses.

    Closes pylint-dev/pylint#4899

  • Fix regression on ClassDef inference

    Closes pylint-dev/pylint#5030 Closes pylint-dev/pylint#5036

  • Fix regression on Compare node inference

    Closes pylint-dev/pylint#5048

  • Extended attrs brain to support the provisional APIs

  • Astroid does not trigger it’s own deprecation warning anymore.

  • Improve brain for typing.Callable and typing.Type.

  • Fix bug with importing namespace packages with relative imports

    Closes pylint-dev/pylint#5059

  • The is_typing_guard and is_sys_guard functions are deprecated and will be removed in 3.0.0. They are complex meta-inference functions that are better suited for pylint. Import them from pylint.checkers.utils instead (requires pylint 2.12).

  • Suppress the conditional between applied brains and dynamic import authorized modules. (Revert the “The transforms related to a module are applied only if this module has not been explicitly authorized to be imported” of version 2.7.3)

  • Adds a brain to infer the function.

    Closes pylint-dev/pylint#3342

What’s New in astroid 2.8.0?#

Release date: 2021-09-14

  • Add additional deprecation warnings in preparation for astroid 3.0

    • Require attributes for some node classes with __init__ call.

      • name (str) for Name, AssignName, DelName

      • attrname (str) for Attribute, AssignAttr, DelAttr

      • op (str) for AugAssign, BinOp, BoolOp, UnaryOp

      • names (list[tuple[str, str | None]]) for Import

  • Support pyz imports

    Closes pylint-dev/pylint#3887

  • Add node_ancestors method to NodeNG for obtaining the ancestors of nodes.

  • It’s now possible to infer the value of comparison nodes

    Closes #846

  • Fixed bug in inference of dataclass field calls.

    Closes pylint-dev/pylint#4963

What’s New in astroid 2.7.3?#

Release date: 2021-08-30

  • The transforms related to a module are applied only if this module has not been explicitly authorized to be imported (i.e is not in AstroidManager.extension_package_whitelist). Solves the following issues if numpy is authorized to be imported through the extension-pkg-allow-list option.

    Closes pylint-dev/pylint#3342 Closes pylint-dev/pylint#4326

  • Fixed bug in attribute inference from inside method calls.

    Closes pylint-dev/pylint#400

  • Fixed bug in inference for superclass instance methods called from the class rather than an instance.

    Closes #1008 Closes pylint-dev/pylint#4377

  • Fixed bug in inference of chained attributes where a subclass had an attribute that was an instance of its superclass.

    Closes pylint-dev/pylint#4220

  • Adds a brain for the ctypes module.

    Closes pylint-dev/pylint#4896

  • When processing dataclass attributes, exclude the same type hints from abc.collections as from typing.

    Closes pylint-dev/pylint#4895

  • Apply dataclass inference to pydantic’s dataclasses.

    Closes pylint-dev/pylint#4899

What’s New in astroid 2.7.2?#

Release date: 2021-08-20

  • BaseContainer is now public, and will replace _BaseContainer completely in astroid 3.0.

  • The call cache used by inference functions produced by inference_tip can now be cleared via clear_inference_tip_cache.

  • astroid.const.BUILTINS and astroid.bases.BUILTINS are not used internally anymore and will be removed in astroid 3.0. Simply replace this by the string ‘builtins’ for better performances and clarity.

  • Add inference for dataclass initializer method.

    Closes pylint-dev/pylint#3201

What’s New in astroid 2.7.1?#

Release date: 2021-08-16

  • When processing dataclass attributes, only do typing inference on collection types. Support for instantiating other typing types is left for the future, if desired.

    Closes #1129

  • Fixed LookupMixIn missing from astroid.node_classes.

What’s New in astroid 2.7.0?#

Release date: 2021-08-15

  • Import from astroid.node_classes and astroid.scoped_nodes has been deprecated in favor of astroid.nodes. Only the imports from astroid.nodes will work in astroid 3.0.0.

  • Add support for arbitrary Enum subclass hierarchies

    Closes pylint-dev/pylint#533 Closes pylint-dev/pylint#2224 Closes pylint-dev/pylint#2626

  • Add inference tips for dataclass attributes, including dataclasses.field calls. Also add support for InitVar.

    Closes pylint-dev/pylint#2600 Closes pylint-dev/pylint#2698 Closes pylint-dev/pylint#3405 Closes pylint-dev/pylint#3794

  • Adds a brain that deals with dynamic import of IsolatedAsyncioTestCase class of the unittest module.

    Closes pylint-dev/pylint#4060

What’s New in astroid 2.6.6?#

Release date: 2021-08-03

  • Added support to infer return type of typing.cast()

  • Fix variable lookup handling of exclusive statements

    Closes pylint-dev/pylint#3711

  • Fix variable lookup handling of function parameters

    Closes pylint-dev/astroid#180

  • Fix variable lookup’s handling of except clause variables

  • Fix handling of classes with duplicated bases with the same name

    Closes pylint-dev/astroid#1088

What’s New in astroid 2.6.5?#

Release date: 2021-07-21

  • Fix a crash when there would be a ‘TypeError object does not support item assignment’ in the code we parse.

    Closes pylint-dev/pylint#4439

  • Fix a crash when a AttributeInferenceError was raised when failing to find the real name in infer_import_from.

    Closes pylint-dev/pylint#4692

What’s New in astroid 2.6.4?#

Release date: 2021-07-19

  • Fix a crash when a StopIteration was raised when inferring a faulty function in a context manager.

    Closes pylint-dev/pylint#4723

What’s New in astroid 2.6.3?#

Release date: 2021-07-19

  • Added If.is_sys_guard and If.is_typing_guard helper methods

  • Fix a bad inference type for yield values inside of a derived class.

    Closes pylint-dev/astroid#1090

  • Fix a crash when the node is a ‘Module’ in the brain builtin inference

    Closes pylint-dev/pylint#4671

  • Fix issues when inferring match variables

    Closes pylint-dev/pylint#4685

  • Fix lookup for nested non-function scopes

  • Fix issue that TypedDict instance wasn’t callable.

    Closes pylint-dev/pylint#4715

  • Add dependency on setuptools and a guard to prevent related exceptions.

What’s New in astroid 2.6.2?#

Release date: 2021-06-30

  • Fix a crash when the inference of the length of a node failed

    Closes pylint-dev/pylint#4633

  • Fix unhandled StopIteration during inference, following the implementation of PEP479 in python 3.7+

    Closes pylint-dev/pylint#4631 Closes #1080

What’s New in astroid 2.6.1?#

Release date: 2021-06-29

  • Fix issue with TypedDict for Python 3.9+

    Closes pylint-dev/pylint#4610

What’s New in astroid 2.6.0?#

Release date: 2021-06-22

  • Appveyor and travis are no longer used in the continuous integration

  • setuptools_scm has been removed and replaced by tbump in order to not have hidden runtime dependencies to setuptools

  • NodeNg, the base node class, is now accessible from astroid or astroid.nodes as it can be used for typing.

  • Update enum brain to improve inference of .name and .value dynamic class attributes

    Closes pylint-dev/pylint#1932 Closes pylint-dev/pylint#2062 Closes pylint-dev/pylint#2306

  • Removed Repr, Exec, and Print nodes as the ast nodes they represented have been removed with the change to Python 3

  • Deprecate Ellipsis node. It will be removed with the next minor release. Checkers that already support Python 3.8+ work without issues. It’s only necessary to remove all references to the astroid.Ellipsis node. This changes will make development of checkers easier as the resulting tree for Ellipsis will no longer depend on the python version. Background: With Python 3.8 the ast.Ellipsis node, along with ast.Str, ast.Bytes, ast.Num, and ast.NamedConstant were merged into ast.Constant.

  • Deprecated Index and ExtSlice nodes. They will be removed with the next minor release. Both are now part of the Subscript node. Checkers that already support Python 3.9+ work without issues. It’s only necessary to remove all references to the astroid.Index and astroid.ExtSlice nodes. This change will make development of checkers easier as the resulting tree for ast.Subscript nodes will no longer depend on the python version. Background: With Python 3.9 ast.Index and ast.ExtSlice were merged into the ast.Subscript node.

  • Updated all Match nodes to be internally consistent.

  • Add Pattern base class.

What’s New in astroid 2.5.8?#

Release date: 2021-06-07

  • Improve support for Pattern Matching

  • Add lineno and col_offset for Keyword nodes and Python 3.9+

  • Add global inference cache to speed up inference of long statement blocks

  • Add a limit to the total number of nodes inferred indirectly as a result of inferring some node

What’s New in astroid 2.5.7?#

Release date: 2021-05-09

  • Fix six.with_metaclass transformation so it doesn’t break user defined transformations.

  • Fix detection of relative imports. Closes #930 Closes pylint-dev/pylint#4186

  • Fix inference of instance attributes defined in base classes

    Closes #932

  • Update infer_named_tuple brain to reject namedtuple definitions that would raise ValueError

    Closes #920

  • Do not set instance attributes on builtin object()

Closes #945 Closes pylint-dev/pylint#4232 Closes pylint-dev/pylint#4221 Closes pylint-dev/pylint#3970 Closes pylint-dev/pylint#3595

  • Fix some spurious cycles detected in context.path leading to more cases that can now be inferred

    Closes #926

  • Add kind field to Const nodes, matching the structure of the built-in ast Const. The kind field is “u” if the literal is a u-prefixed string, and None otherwise.

    Closes #898

  • Fix property inference in class contexts for properties defined on the metaclass

    Closes #940

  • Update enum brain to fix definition of __members__ for subclass-defined Enums

    Closes pylint-dev/pylint#3535 Closes pylint-dev/pylint#4358

  • Update random brain to fix a crash with inference of some sequence elements

    Closes #922

  • Fix inference of attributes defined in a base class that is an inner class

    Closes #904

  • Allow inferring a return value of None for non-abstract empty functions and functions with no return statements (implicitly returning None)

    Closes #485

  • scm_setuptools has been added to the packaging.

  • Astroid’s tags are now the standard form vX.Y.Z and not astroid-X.Y.Z anymore.

  • Add initial support for Pattern Matching in Python 3.10

What’s New in astroid 2.5.6?#

Release date: 2021-04-25

  • Fix retro-compatibility issues with old version of pylint Closes pylint-dev/pylint#4402

What’s New in astroid 2.5.5?#

Release date: 2021-04-24

  • Fixes the discord link in the project urls of the package. Closes pylint-dev/pylint#4393

What’s New in astroid 2.5.4?#

Release date: 2021-04-24

  • The packaging is now done via setuptools exclusively. doc, tests, and Changelog are not packaged anymore - reducing the size of the package greatly.

  • Debian packaging is now (officially) done in

  • __pkginfo__ now only contain __version__ (also accessible with astroid.__version__), other meta-information are still accessible with import importlib;metadata.metadata('astroid').

  • Added inference tip for typing.Tuple alias

  • Fix crash when evaluating typing.NamedTuple

    Closes pylint-dev/pylint#4383

  • COPYING was removed in favor of COPYING.LESSER and the latter was renamed to LICENSE to make more apparent that the code is licensed under LGPLv2 or later.

  • Moved from appveyor and travis to Github Actions for continuous integration.

What’s New in astroid 2.5.3?#

Release date: 2021-04-10

  • Takes into account the fact that subscript inferring for a ClassDef may involve __class_getitem__ method

  • Reworks the collections and typing brain so that pylint`s acceptance tests are fine.

    Closes pylint-dev/pylint#4206

  • Use inference_tip for typing.TypedDict brain.

  • Fix mro for classes that inherit from typing.Generic

  • Add inference tip for typing.Generic and typing.Annotated with __class_getitem__

    Closes pylint-dev/pylint#2822

What’s New in astroid 2.5.2?#

Release date: 2021-03-28

  • Detects import numpy as a valid numpy import.

    Closes pylint-dev/pylint#3974

  • Iterate over Keywords when using ClassDef.get_children

    Closes pylint-dev/pylint#3202

What’s New in astroid 2.5.1?#

Release date: 2021-02-28

  • The context.path is reverted to a set because otherwise it leads to false positives for non numpy functions.

    Closes #895 #899

  • Don’t transform dataclass ClassVars

  • Improve typing.TypedDict inference

  • Fix the Duplicates found in MROs false positive.

    Closes #905 Closes pylint-dev/pylint#2717 Closes pylint-dev/pylint#3247 Closes pylint-dev/pylint#4093 Closes pylint-dev/pylint#4131 Closes pylint-dev/pylint#4145

What’s New in astroid 2.5?#

Release date: 2021-02-15

  • Adds attr_fset in the PropertyModel class.

    Fixes pylint-dev/pylint#3480

  • Remove support for Python 3.5.

  • Remove the runtime dependency on six. The six brain remains in astroid.

    Fixes pylint-dev/astroid#863

  • Enrich the brain_collection module so that __class_getitem__ method is added to deque for python version above 3.9.

  • The context.path is now a dict and the context.push method returns True if the node has been visited a certain amount of times.

    Close #669

  • Adds a brain for type object so that it is possible to write type[int] in annotation.

    Fixes pylint-dev/pylint#4001

  • Add __class_getitem__ method to subprocess.Popen brain under Python 3.9 so that it is seen as subscriptable by pylint.

    Fixes pylint-dev/pylint#4034

  • Adds degrees, radians, which are numpy ufunc functions, in the numpy brain. Adds random function in the numpy.random brain.

    Fixes pylint-dev/pylint#3856

  • Fix deprecated importlib methods

    Closes #703

  • Fix a crash in inference caused by Uninferable container elements

    Close #866

  • Add python 3.9 support.

  • The flat attribute of numpy.ndarray is now inferred as an numpy.ndarray itself. It should be a numpy.flatiter instance, but this class is not yet available in the numpy brain.

    Fixes pylint-dev/pylint#3640

  • Fix a bug for dunder methods inference of function objects

    Fixes #819

  • Fixes a bug in the signature of the ndarray.__or__ method, in the module.

    Fixes #815

  • Fixes a to-list cast bug in starred_assigned_stmts method, in the module.

  • Added a brain for hypothesis.strategies.composite

  • The transpose of a numpy.ndarray is also a numpy.ndarray

    Fixes pylint-dev/pylint#3387

  • Added a brain for sqlalchemy.orm.session

  • Separate string and bytes classes patching

    Fixes pylint-dev/pylint#3599

  • Prevent recursion error for self referential length calls

    Close #777

  • Added missing methods to the brain for mechanize, to fix pylint false positives

    Close #793

  • Added more supported parameters to subprocess.check_output

  • Fix recursion errors with pandas

    Fixes pylint-dev/pylint#2843 Fixes pylint-dev/pylint#2811

  • Added exception inference for UnicodeDecodeError

    Close pylint-dev/pylint#3639

  • FunctionDef.is_generator properly handles yield nodes in If tests

    Close pylint-dev/pylint#3583

  • Fixed exception-chaining error messages.

  • Fix failure to infer base class type with multiple inheritance and qualified names

    Fixes #843

  • Fix interpretation of six.with_metaclass class definitions.

    Fixes #713

  • Reduce memory usage of astroid’s module cache.

  • Remove dependency on imp.

    Close #594 Close #681

  • Do not crash when encountering starred assignments in enums.

    Close #835

  • Fix a crash in functools.partial inference when the arguments cannot be determined

    Close pylint-dev/pylint#3776

  • Fix a crash caused by a lookup of a monkey-patched method

    Close pylint-dev/pylint#3686

  • is_generator correctly considers Yield nodes in AugAssign nodes

    This fixes a false positive with the assignment-from-no-return pylint check.

    Close pylint-dev/pylint#3904

  • Corrected the parent of function type comment nodes.

    These nodes used to be parented to their original ast.FunctionDef parent but are now correctly parented to their astroid.FunctionDef parent.

    Close pylint-dev/astroid#851

What’s New in astroid 2.4.2?#

Release date: 2020-06-08

  • FunctionDef.is_generator properly handles yield nodes in While tests

    Close pylint-dev/pylint#3519

  • Properly construct the arguments of inferred property descriptors

    Close pylint-dev/pylint#3648

What’s New in astroid 2.4.1?#

Release date: 2020-05-05

  • Handle the case where the raw builder fails to retrieve the __all__ attribute

    Close #772

  • Restructure the AST parsing heuristic to always pick the same module

    Close pylint-dev/pylint#3540 Close #773

  • Changed to work with [distlib](

    Close #779

  • Do not crash with SyntaxError when parsing namedtuples with invalid label

    Close pylint-dev/pylint#3549

  • Protect against infer_call_result failing with InferenceError in Super.getattr()

    Close pylint-dev/pylint#3529

What’s New in astroid 2.4.0?#

Release date: 2020-04-27

  • Expose a ast_from_string method in AstroidManager, which will accept source code as a string and return the corresponding astroid object

    Closes pylint-dev/astroid#725

  • BoundMethod.implicit_parameters returns a proper value for __new__

    Close pylint-dev/pylint#2335

  • Allow slots added dynamically to a class to still be inferred

    Close pylint-dev/pylint#2334

  • Allow FunctionDef.getattr to look into both instance attrs and special attributes

    Close pylint-dev/pylint#1078

  • Infer qualified classmethod as a classmethod.

    Close pylint-dev/pylint#3417

  • Prevent a recursion error to happen when inferring the declared metaclass of a class

    Close #749

  • Raise AttributeInferenceError when getattr() receives an empty name

    Close pylint-dev/pylint#2991

  • Prevent a recursion error for self reference variables and type() calls.

    Close #199

  • Do not infer the first argument of a staticmethod in a metaclass as the class itself

    Close pylint-dev/pylint#3032

  • NodeNG.bool_value() gained an optional context parameter

    We need to pass an inference context downstream when inferring the boolean value of a node in order to prevent recursion errors and double inference.

    This fix prevents a recursion error with dask library.

    Close pylint-dev/pylint#2985

  • Pass a context argument to astroid.Arguments to prevent recursion errors

    Close pylint-dev/pylint#3414

  • Better inference of class and static methods decorated with custom methods

    Close pylint-dev/pylint#3209

  • Reverse the order of decorators for infer_subscript

    path_wrapper needs to come first, followed by raise_if_nothing_inferred, otherwise we won’t handle StopIteration correctly.

    Close #762

  • Prevent a recursion error when inferring self-referential variables without definition

    Close pylint-dev/pylint#1285

  • Numpy datetime64.astype return value is inferred as a ndarray.

    Close pylint-dev/pylint#3332

  • Skip non Assign and AnnAssign nodes from enum reinterpretation

    Closes pylint-dev/pylint#3365

  • Numpy ndarray attributes imag and real are now inferred as ndarray.

    Close pylint-dev/pylint#3322

  • Added a call to register_transform for all functions of the brain_numpy_core_multiarray module in case the current node is an instance of astroid.Name

    Close #666

  • Use the parent of the node when inferring aug assign nodes instead of the statement

    Close pylint-dev/pylint#2911 Close pylint-dev/pylint#3214

  • Added some functions to the brain_numpy_core_umath module

    Close pylint-dev/pylint#3319

  • Added some functions of the numpy.core.multiarray module

    Close pylint-dev/pylint#3208

  • All the numpy ufunc functions derived now from a common class that implements the specific reduce, accumulate, reduceat, outer and at methods.

    Close pylint-dev/pylint#2885

  • nodes.Const.itered returns a list of Const nodes, not strings

    Close pylint-dev/pylint#3306

  • The shape attribute of a numpy ndarray is now a ndarray

    Close pylint-dev/pylint#3139

  • Don’t ignore special methods when inspecting gi classes

    Close #728

  • Added transform for scipy.gaussian

  • Add support for inferring properties.

  • Added a brain for responses

  • Allow inferring positional only arguments.

  • Retry parsing a module that has invalid type comments

    It is possible for a module to use comments that might be interpreted as type comments by the ast library. We do not want to completely crash on those invalid type comments.

    Close #708

  • Scope the inference to the current bound node when inferring instances of classes

    When inferring instances of classes from arguments, such as self in a bound method, we could use as a hint the context’s boundnode, which indicates the instance from which the inference originated. As an example, a subclass that uses a parent’s method which returns self, will override the self to point to it instead of pointing to the parent class.

    Close pylint-dev/pylint#3157

  • Add support for inferring exception instances in all contexts

    We were able to infer exception instances as ExceptionInstance only for a handful of cases, but not all. ExceptionInstance has support for better inference of .args and other exception related attributes that normal instances do not have. This additional support should remove certain false positives related to .args and other exception attributes in pylint.

    Close pylint-dev/pylint#2333

  • Add more supported parameters to subprocess.check_output

    Close #722

  • Infer args unpacking of self

    Certain stdlib modules use *args to encapsulate the self parameter, which results in uninferable instances given we rely on the presence of the self argument to figure out the instance where we should be setting attributes.

    Close pylint-dev/pylint#3216

  • Clean up

    Make pytest-runner a requirement only if running tests, similar to what was done with McCabe.

    Clean up the file, resolving a handful of minor warnings with it.

  • Handle StopIteration error in infer_int.

    Close pylint-dev/pylint#3274

  • Can access per argument type comments for positional only and keyword only arguments.

    The comments are accessed through through the new Arguments.type_comment_posonlyargs and Arguments.type_comment_kwonlyargs attributes respectively.

  • Relax upper bound on wrapt

    Close #755

  • Properly analyze CFFI compiled extensions.

What’s New in astroid 2.3.2?#

Release date: 2019-10-18

  • All type comments have as parent the corresponding astroid node

    Until now they had as parent the builtin ast node which meant we were operating with primitive objects instead of our own.

    Close pylint-dev/pylint#3174

  • Pass an inference context to metaclass() when inferring an object type

    This should prevent a bunch of recursion errors happening in pylint. Also refactor the inference of IfExp nodes to use separate contexts for each potential branch.

    Close pylint-dev/pylint#3152 Close pylint-dev/pylint#3159

What’s New in astroid 2.3.1?#

Release date: 2019-09-30

  • A transform for the builtin dataclasses module was added.

    This should address various dataclasses issues that were surfaced even more after the release of pylint 2.4.0. In the previous versions of astroid, annotated assign nodes were allowed to be retrieved via getattr() but that no longer happens with the latest astroid release, as those attribute are not actual attributes, but rather virtual ones, thus an operation such as getattr() does not make sense for them.

  • Update attr brain to partly understand annotated attributes

    Close #656

What’s New in astroid 2.3.0?#

Release date: 2019-09-24

  • Add a brain tip for subprocess.check_output

    Close #689

  • Remove NodeNG.nearest method because of lack of usage in astroid and pylint.

    Close #691

  • Allow importing wheel files. Close #541

  • Annotated AST follows PEP8 coding style when converted to string.

  • Fix a bug where defining a class using type() could cause a DuplicateBasesError.

    Close #644

  • Dropped support for Python 3.4.

  • Numpy brain support is improved.

    Numpy’s fundamental type numpy.ndarray has its own brain : brain_numpy_ndarray and each numpy module that necessitates brain action has now its own numpy brain :

    • numpy.core.numeric

    • numpy.core.function_base

    • numpy.core.multiarray

    • numpy.core.numeric

    • numpy.core.numerictypes

    • numpy.core.umath

    • numpy.random.mtrand

    Close pylint-dev/pylint#2865 Close pylint-dev/pylint#2747 Close pylint-dev/pylint#2721 Close pylint-dev/pylint#2326 Close pylint-dev/pylint#2021

  • assert only functions are properly inferred as returning None

    Close #668

  • Add support for Python 3.8’s NamedExpr nodes, which is part of assignment expressions.

    Close #674

  • Added support for inferring IfExp nodes.

  • Instances of exceptions are inferred as such when inferring in non-exception context

    This allows special inference support for exception attributes such as .args.

    Close pylint-dev/pylint#2333

  • Drop a superfluous and wrong callcontext when inferring the result of a context manager

    Close pylint-dev/pylint#2859

  • igetattr raises InferenceError on re-inference of the same object

    This prevents StopIteration from leaking when we encounter the same object in the current context, which could result in various RuntimeErrors leaking in other parts of the inference. Until we get a global context per inference, the solution is sort of a hack, as with the suggested global context improvement, we could theoretically reuse the same inference object.

    Close #663

  • Variable annotations can no longer be retrieved with ClassDef.getattr

    Unless they have an attached value, class variable annotations can no longer be retrieved with ClassDef.getattr.

  • Improved builtin inference for tuple, set, frozenset, list and dict

    We were properly inferring these callables only if they had consts as values, but that is not the case most of the time. Instead we try to infer the values that their arguments can be and use them instead of assuming Const nodes all the time.

    Close pylint-dev/pylint#2841

  • The last except handler wins when inferring variables bound in an except handler.

    Close pylint-dev/pylint#2777

  • threading.Lock.locked() is properly recognized as a member of threading.Lock

    Close pylint-dev/pylint#2791

  • Fix recursion error involving len and self referential attributes

    Close pylint-dev/pylint#2736 Close pylint-dev/pylint#2734 Close pylint-dev/pylint#2740

  • Can access per argument type comments through new Arguments.type_comment_args attribute.

    Close #665

  • Fix being unable to access class attributes on a NamedTuple.

    Close pylint-dev/pylint#1628

  • Fixed being unable to find distutils submodules by name when in a virtualenv.

    Close pylint-dev/pylint#73

What’s New in astroid 2.2.0?#

Release date: 2019-02-27

  • Fix a bug concerning inference of calls to numpy function that should not return Tuple or List instances.

Close pylint-dev/pylint#2436

  • Fix a bug where a method, which is a lambda built from a function, is not inferred as BoundMethod

    Close pylint-dev/pylint#2594

  • typed_ast gets installed for Python 3.7, meaning type comments can now work on 3.7.

  • Fix a bug concerning inference of unary operators on numpy types.

    Close pylint-dev/pylint#2436 (first part)

  • Fix a crash with typing.NamedTuple and empty fields. Close pylint-dev/pylint#2745

  • Add a proper strerror inference to the OSError exceptions.

    Close pylint-dev/pylint#2553

  • Support non-const nodes as values of Enum attributes.

    Close #612

  • Fix a crash in the enum brain tip caused by non-assign members in class definitions.

    Close pylint-dev/pylint#2719

  • brain_numpy returns an undefined type for numpy methods to avoid assignment-from-no-return

    Close pylint-dev/pylint#2694

  • Fix a bug where a call to a function that has been previously called via functools.partial was wrongly inferred

    Close pylint-dev/pylint#2588

  • Fix a recursion error caused by inferring the slice builtin.

    Close pylint-dev/pylint#2667

  • Remove the restriction that “old style classes” cannot have a MRO.

    This does not make sense any longer given that we run against Python 3 code. Close pylint-dev/pylint#2701

  • Added more builtin exceptions attributes. Close #580

  • Add a registry for builtin exception models. Close pylint-dev/pylint#1432

  • Add brain tips for http.client. Close pylint-dev/pylint#2687

  • Prevent crashing when processing enums with mixed single and double quotes.

    Close pylint-dev/pylint#2676

  • typing types have the __args__ property. Close pylint-dev/pylint#2419

  • Fix a bug where an Attribute used as a base class was triggering a crash

    Close #626

  • Added special support for enum.IntFlag

    Close pylint-dev/pylint#2534

  • Extend detection of data classes defined with attr

    Close #628

  • Fix typo in description for brain_attrs

What’s New in astroid 2.1.0?#

Release date: 2018-11-25

  • threading.Lock.acquire has the timeout parameter now.

    Close pylint-dev/pylint#2457

  • Pass parameters by keyword name when inferring sequences.

    Close pylint-dev/pylint#2526

  • Correct line numbering for f-strings for complex embedded expressions

    When a f-string contained a complex expression, such as an attribute access, we weren’t cloning all the subtree of the f-string expression for attaching the correct line number. This problem is coming from the builtin AST parser which gives for the f-string and for its underlying elements the line number 1, but this is causing all sorts of bugs and problems in pylint, which expects correct line numbering.

    Close pylint-dev/pylint#2449

  • Add support for argparse.Namespace

    Close pylint-dev/pylint#2413

  • async functions are now inferred as AsyncGenerator when inferring their call result.

  • Filter out Uninferable when inferring the call result result of a class with an uninferable __call__ method.

    Close pylint-dev/pylint#2434

  • Make compatible with AST changes in Python 3.8.

  • Subscript inference (e.g. “a[i]”) now pays attention to multiple inferred values for value (e.g. “a”) and slice (e.g. “i”)

    Close #614

What’s New in astroid 2.0.4?#

Release date: 2018-08-10

  • Make sure that assign nodes can find yield statements in their values

    Close pylint-dev/pylint#2400

What’s New in astroid 2.0.3?#

Release date: 2018-08-08

  • The environment markers for PyPy were invalid.

What’s New in astroid 2.0.2?#

Release date: 2018-08-01

  • Stop repeat inference attempt causing a RuntimeError in Python3.7

    Close pylint-dev/pylint#2317

  • infer_call_result can raise InferenceError so make sure to handle that for the call sites where it is used

infer_call_result started recently to raise InferenceError for objects for which it could not find any returns. Previously it was silently raising a StopIteration, which was especially leaking when calling builtin methods. Since it is after all an inference method, it is expected that it could raise an InferenceError rather than returning nothing.

Close pylint-dev/pylint#2350

What’s New in astroid 2.0.1?#

Release date: 2018-07-19

  • Released to clear an old wheel package on PyPI

What’s New in astroid 2.0?#

Release date: 2018-07-15

  • String representation of nodes takes in account precedence and associativity rules of operators.

  • Fix loading files with modutils.load_from_module when the path that contains it in sys.path is a symlink and the file is contained in a symlinked folder.

    Close #583

  • Reworking of the numpy brain dealing with numerictypes (use of inspect module to determine the class hierarchy of numpy.core.numerictypes module)

    Close pylint-dev/pylint#2140

  • Added inference support for starred nodes in for loops

    Close #146

  • Support unpacking for dicts in assignments

    Close #268

  • Add support for inferring functools.partial

    Close #125

  • Inference support for dict.fromkeys

    Close #110

  • int() builtin is inferred as returning integers.

    Close #150

  • str() builtin is inferred as returning strings.

    Close #148

  • DescriptorBoundMethod has the correct number of arguments defined.

  • Improvement of the numpy numeric types definition.

    Close pylint-dev/pylint#1971

  • Subclasses of property are now interpreted as properties

    Close pylint-dev/pylint#1601

  • AsStringRegexpPredicate has been removed.

    Use transform predicates instead of it.

  • Switched to using typed_ast for getting access to type comments

    As a side effect of this change, some nodes gained a new type_annotation attribute, which, if the type comments were correctly parsed, should contain a node object with the corresponding objects from the type comment.

  • typing.X[…] and typing.NewType are inferred as classes instead of instances.

  • Module.__path__ is now a list

    It used to be a string containing the path, but it doesn’t reflect the situation on Python, where it is actually a list.

  • Fix a bug with namespace package’s __path__ attribute.

    Close #528

  • Added brain tips for random.sample

    Part of pylint-dev/pylint#811

  • Add brain tip for issubclass builtin

    Close #101.

  • Fix submodule imports from six

    Close pylint-dev/pylint#1640

  • Fix missing __module__ and __qualname__ from class definition locals

    Close pylint-dev/pylint#1753

  • Fix a crash when __annotations__ access a parent’s __init__ that does not have arguments

    Close #473

  • Fix multiple objects sharing the same InferenceContext.path causing uninferable results

    Close #483

  • Fix improper modification of col_offset, lineno upon inference of builtin functions

    Close pylint-dev/pylint#1839

  • Subprocess.Popen brain now knows of the args member

    Close pylint-dev/pylint#1860

  • add move_to_end method to collections.OrderedDict brain

    Close pylint-dev/pylint#1872

  • Include new hashlib classes added in python 3.6

  • Fix RecursionError for augmented assign

    Close #437, #447, #313, pylint-dev/pylint#1642, pylint-dev/pylint#1805, pylint-dev/pylint#1854, pylint-dev/pylint#1452

  • Add missing attrs special attribute

    Close pylint-dev/pylint#1884

  • Inference now understands the ‘isinstance’ builtin

    Close #98

  • Stop duplicate nodes with the same key values from appearing in dictionaries from dictionary unpacking.

    Close pylint-dev/pylint#1843

  • Fix contextlib.contextmanager inference for nested context managers

    Close #1699

  • Implement inference for len builtin

    Close #112

  • Add qname method to Super object preventing potential errors in upstream pylint

    Close #533

  • Stop astroid from getting stuck in an infinite loop if a function shares its name with its decorator

    Close #375

  • Fix issue with inherited __call__ improperly inferencing self

    Close #pylint-dev/pylint#2199

  • Fix __call__ precedence for classes with custom metaclasses

    Close pylint-dev/pylint#2159

  • Limit the maximum amount of interable result in an NodeNG.infer() call to 100 by default for performance issues with variables with large amounts of possible values.

    The max inferable value can be tuned by setting the max_inferable_values flag on astroid.MANAGER.

What’s New in astroid 1.6.0?#

Release date: 2017-12-15

  • When verifying duplicates classes in MRO, ignore on-the-fly generated classes

    Close pylint-dev/pylint#1706

  • Add brain tip for attrs library to prevent unsupported-assignment-operation false positives

    Close pylint-dev/pylint#1698

  • file_stream was removed, since it was deprecated for three releases

    Instead one should use the .stream() method.

  • Vast improvements to numpy support

  • Add brain tips for curses

    Close pylint-dev/pylint#1703

  • Add brain tips for

    Close pylint-dev/pylint#961

  • The result of using object.__new__ as class decorator is correctly inferred as instance

    Close #172

  • Enums created with functional syntax are now iterable

  • Enums created with functional syntax are now subscriptable

  • Don’t crash when getting the string representation of BadUnaryOperationMessage

    In some cases, when the operand does not have a .name attribute, getting the string representation of a BadUnaryOperationMessage leads to a crash.

    Close pylint-dev/pylint#1563

  • Don’t raise DuplicateBaseError when classes at different locations are used

    For instance, one can implement a namedtuple base class, which gets reused on a class with the same name later on in the file. Until now, we considered these two classes as being the same, because they shared the name, but in fact they are different, being created at different locations and through different means.

    Close pylint-dev/pylint#1458

  • The func form of namedtuples with keywords is now understood

    Close pylint-dev/pylint#1530

  • Fix inference for nested calls

  • Dunder class at method level is now inferred as the class of the method

    Close pylint-dev/pylint#1328

  • Stop most inference tip overwrites from happening by using

    predicates on existing inference_tip transforms.

    Close #472

  • Fix object.__new__(cls) calls in classmethods by using

    a context which has the proper boundnode for the given argument

    Close #404

  • Fix Pathlib type inference

    Close pylint-dev/pylint#224 Close pylint-dev/pylint#1660

What’s New in astroid 1.5.3?#

Release date: 2017-06-03

What’s New in astroid 1.5.2?#

Release date: 2017-04-17

  • Basic support for the class form of typing.NamedTuple

  • mro() can be computed for classes with old style classes in the hierarchy

What’s New in astroid 1.5.0?#

Release date: 2017-04-13

  • Arguments node gained a new attribute, kwonlyargs_annotations

    This new attribute holds the annotations for the keyword-only arguments.

  • namedtuple inference now understands rename keyword argument

  • Classes can now know their definition-time arguments.

    Classes can support keyword arguments, which are passed when a class is constructed using __new__.

  • Add support for inferring typing.NamedTuple.

  • ClassDef now supports __getitem__ inference through the metaclass.

  • getitem() method accepts nodes now, instead of Python objects.

  • Add support for explicit namespace packages, created with pkg_resources.

  • Add brain tips for _io.TextIOWrapper’s buffer and raw attributes.

  • Add returns into the proper order in FunctionDef._astroid_fields

    The order is important, since it determines the last child, which in turn determines the last line number of a scoped node.

  • Add brain tips for functools.lru_cache.

  • New function, astroid.extract_node, exported out from astroid.test_utils.

  • Stop saving assignment locals in ExceptHandlers, when the context is a store.

    This fixes a tripping case, where the RHS of a ExceptHandler can be redefined by the LHS, leading to a local save. For instance, except KeyError, exceptions.IndexError could result in a local save for IndexError as KeyError, resulting in potential unexpected inferences. Since we don’t lose a lot, this syntax gets prohibited.

  • Fix a crash which occurred when the class of a namedtuple could not be inferred.

  • Add support for implicit namespace packages (PEP 420)

    This change involves a couple of modifications. First, we’re relying on a spec finder protocol, inspired by importlib’s ModuleSpec, for finding where a file or package is, using importlib’s PathFinder as well, which enable us to discover namespace packages as well. This discovery is the center piece of the namespace package support, the other part being the construction of a dummy Module node whenever a namespace package root directory is requested during astroid’s import references.

  • Introduce a special attributes model

    Through this model, astroid starts knowing special attributes of certain Python objects, such as functions, classes, super objects and so on. This was previously possible before, but now the lookup and the attributes themselves are separated into a new module,, which describes, in a more comprehensive way, the data model of each object.

  • Exceptions have their own object model

    Some of exceptions’s attributes, such as .args and .message, can’t be inferred correctly since they are descriptors that get transformed into the proper objects at runtime. This can cause issues with the static analysis, since they are inferred as different than what’s expected. Now when we’re creating instances of exceptions, we’re inferring a special object that knows how to transform those runtime attributes into the proper objects via a custom object model. Closes issue #81

  • dict.values, dict.keys and dict.items are properly inferred to their corresponding type, which also includes the proper containers for Python 3.

  • Fix a crash which occurred when a method had a same name as a builtin object, decorated at the same time by that builtin object ( a property for instance)

  • The inference can handle the case where the attribute is accessed through a subclass of a base class and the attribute is defined at the base class’s level, by taking in consideration a redefinition in the subclass.

    This should fix

  • Calling lambda methods (defined at class level) can be understood.

  • Don’t take in consideration invalid assignments, especially when __slots__ declaration forbids them.

    Close issue #332

  • Functional form of enums support accessing values through __call__.

  • Brain tips for the ssl library.

  • decoratornames() does not leak InferenceError anymore.

  • wildcard_imported_names() got replaced by _public_names()

    Our understanding of wildcard imports through __all__ was half baked to say at least, since we couldn’t account for modifications of the list, which results in tons of false positives. Instead, we replaced it with _public_names(), a method which returns all the names that are publicly available in a module, that is that don’t start with an underscore, even though this means that there is a possibility for other names to be leaked out even though they are not present in the __all__ variable.

    The method is private in 1.4.X.

  • unpack_infer raises InferenceError if it can’t operate with the given sequences of nodes.

  • Support accessing properties with super().

  • Enforce strong updates per frames.

    When looking up a name in a scope, Scope.lookup will return only the values which will be reachable after execution, as seen in the following code:

    a = 1 a = 2

    In this case it doesn’t make sense to return two values, but only the last one.

  • Add support for inference on threading.Lock

    As a matter of fact, astroid can infer on threading.RLock, threading.Semaphore, but can’t do it on threading.Lock (because it comes from an extension module).

  • pkg_resources brain tips are a bit more specific, by specifying proper returns.

  • The slots() method conflates all the slots from the ancestors into a list of current and parent slots.

    We’re doing this because this is the right semantics of slots, they get inherited, as long as each parent defines a __slots__ entry.

  • Some nodes got a new attribute, ‘ctx’, which tells in which context the said node was used.

    The possible values for the contexts are Load (‘a’), Del (‘del a’), Store (‘a = 4’) and the nodes that got the new attribute are Starred, Subscript, List and Tuple. Closes issue #267.

  • relative_to_absolute_name or methods calling it will now raise TooManyLevelsError when a relative import was trying to access something beyond the top-level package.

  • AstroidBuildingException is now AstroidBuildingError. The first name will exist until astroid 2.0.

  • Add two new exceptions, AstroidImportError and AstroidSyntaxError. They are subclasses of AstroidBuildingException and are raised when a module can’t be imported from various reasons. Also do_import_module lets the errors to bubble up without converting them to InferenceError. This particular conversion happens only during the inference.

  • Revert to using printf-style formatting in as_string, in order to avoid a potential problem with encodings when using .format. Closes issue #273. Patch by notsqrt.

  • assigned_stmts methods have the same signature from now on.

    They used to have different signatures and each one made assumptions about what could be passed to other implementations, leading to various possible crashes when one or more arguments weren’t given. Closes issue #277.

  • Fix metaclass detection, when multiple keyword arguments are used in class definition.

  • Add support for annotated variable assignments (PEP 526)

  • Starred expressions are now inferred correctly for tuple, list, set, and dictionary literals.

  • Support for asynchronous comprehensions introduced in Python 3.6.

    Fixes #399. See PEP530 for details.

What’s New in astroid 1.4.1?#

Release date: 2015-11-29

  • Add support for handling Uninferable nodes when calling as_string

    Some object, for instance List or Tuple can have, after inference, Uninferable as their elements, happening when their components weren’t couldn’t be inferred properly. This means that as_string needs to cope with expecting Uninferable nodes part of the other nodes coming for a string transformation. The patch adds a visit method in AsString and accept on Yes / Uninferable nodes. Closes issue #270.

What’s New in astroid 1.4.0?#

Release date: 2015-11-29

  • Class.getattr(‘__mro__’) returns the actual MRO. Closes issue #128.

  • The logilab-common dependency is not needed anymore as the needed code was integrated into astroid.

  • Generated enum member stubs now support IntEnum and multiple base classes.

  • astroid.builder.AstroidBuilder.string_build and astroid.builder.AstroidBuilder.file_build are now raising AstroidBuildingException when the parsing of the string raises a SyntaxError.

  • Add brain tips for multiprocessing.Manager and multiprocessing.managers.SyncManager.

  • Add some fixes which enhances the Jython support. The fix mostly includes updates to modutils, which is modified in order to properly lookup paths from live objects, which ends in $py.class, not pyc as for Python 2, Closes issue #83.

  • The Generator objects inferred with infer_call_result from functions have as parent the function from which they are returned.

  • Add brain tips for multiprocessing post Python 3.4+, where the module level functions are retrieved with getattr from a context object, leading to many no-member errors in Pylint.

  • Understand partially the 3-argument form of type. The only change is that astroid understands members passed in as dictionaries as the third argument.

  • .slots() will return an empty list for classes with empty slots. Previously it returned None, which is the same value for classes without slots at all. This was changed in order to better reflect what’s actually happening.

  • Improve the inference of Getattr nodes when dealing with abstract properties from the abc module.

    In astroid.bases.Instance._wrap_attr we had a detection code for properties, which basically inferred whatever a property returned, passing the results up the stack, to the igetattr() method. It handled only the builtin property but the new patch also handles a couple of other properties, such as abc.abstractproperty.

  • UnboundMethod.getattr calls the getattr of its _proxied object and doesn’t call super(…) anymore.

    It previously crashed, since the first ancestor in its mro was bases.Proxy and bases.Proxy doesn’t implement the .getattr method. Closes issue #91.

  • Don’t hard fail when calling .mro() on a class which has combined both newstyle and old style classes. The class in question is actually newstyle (and the __mro__ can be retrieved using Python).

    .mro() fallbacks to using .ancestors() in that case.

  • Class.local_attr and Class.local_attr_ancestors uses internally a mro lookup, using .mro() method, if they can.

    That means for newstyle classes, when trying to lookup a member using one of these functions, the first one according to the mro will be returned. This reflects nicely the reality, but it can have as a drawback the fact that it is a behaviour change (the previous behaviour was incorrect though). Also, having bases which can return multiple values when inferred will not work with the new approach, because .mro() only retrieves the first value inferred from a base.

  • Expose an implicit_metaclass() method in Class. This will return a builtins.type instance for newstyle classes.

  • Add two new exceptions for handling MRO error cases. DuplicateBasesError is emitted when duplicate bases are found in a class, InconsistentMroError is raised when the method resolution is determined to be inconsistent. They share a common class, MroError, which is a subclass of ResolveError, meaning that this change is backwards compatible.

  • Classes aren’t marked as interfaces anymore, in the type attribute.

  • Class.has_dynamic_getattr doesn’t return True for special methods which aren’t implemented in pure Python, as it is the case for extension modules.

    Since most likely the methods were coming from a live object, this implies that all of them will have __getattr__ and __getattribute__ present and it is wrong to consider that those methods were actually implemented.

  • Add basic support for understanding context managers.

    Currently, there’s no way to understand whatever __enter__ returns in a context manager and what it is bound using the as keyword. With these changes, we can understand bar in with foo() as bar, which will be the result of __enter__.

  • Add a new type of node, called inference objects. Inference objects are similar with AST nodes, but they can be obtained only after inference, so they can’t be found inside the original AST tree. Their purpose is to handle at astroid level some operations which can’t be handled when using brain transforms. For instance, the first object added is FrozenSet, which can be manipulated at astroid’s level (inferred, itered etc). Code such as this ‘frozenset((1,2))’ will not return an Instance of frozenset, without having access to its content, but a new objects.FrozenSet, which can be used just as a nodes.Set.

  • Add a new inference object called Super, which also adds support for understanding super calls. astroid understands the zero-argument form of super, specific to Python 3, where the interpreter fills itself the arguments of the call. Also, we are understanding the 2-argument form of super, both for bounded lookups (super(X, instance)) as well as for unbounded lookups (super(X, Y)), having as well support for validating that the object-or-type is a subtype of the first argument. The unbounded form of super (one argument) is not understood, since it’s useless in practice and should be removed from Python’s specification. Closes issue #89.

  • Add inference support for getattr builtin. Now getattr builtins are properly understood. Closes issue #103.

  • Add inference support for hasattr builtin. Closes issue #102.

  • Add ‘assert_equals’ method in’s brain plugin.

  • Don’t leak StopIteration when inferring invalid UnaryOps (+[], +None etc.).

  • Improve the inference of UnaryOperands.

    When inferring unary operands, astroid looks up the return value of __pos__, __neg__ and __invert__ to determine the inferred value of ~node, +node or -node.

  • Improve the inference of six.moves, especially when using from … import … syntax. Also, we added a new fail import hook for six.moves, which fixes the import-error false positive from pylint. Closes issue #107.

  • Make the first steps towards detecting type errors for unary and binary operations.

    In exceptions, one object was added for holding information about a possible UnaryOp TypeError, object called UnaryOperationError. Even though the name suggests it’s an exception, it’s actually not one. When inferring UnaryOps, we use this special object to mark a possible TypeError, object which can be interpreted by pylint in order to emit a new warning. We are also exposing a new method for UnaryOps, called type_errors, which returns a list of UnaryOperationsError.

  • A new method was added to the AST nodes, ‘bool_value’. It is used to deduce the value of a node when used in a boolean context, which is useful for both inference, as well as for data flow analysis, where we are interested in what branches will be followed when the program will be executed. bool_value returns True, False or YES, if the node’s boolean value can’t be deduced. The method is used when inferring the unary operand not. Thus, not something will result in calling something.bool_value and negating the result, if it is a boolean.

  • Add inference support for boolean operations (and and not).

  • Add inference support for the builtin callable.

  • astroid.inspector was moved to pylint.pyreverse, since it is the only known client of this module. No other change was made to the exported API.

  • astroid.utils.ASTWalker and astroid.utils.LocalsVisitor were moved to pylint.pyreverse.utils.

  • Add inference support for the builtin bool.

  • Add igetattr method to scoped_nodes.Function.

  • Add support for Python 3.5’s MatMul operation: see PEP 465 for more details.

  • NotImplemented is detected properly now as being part of the builtins module. Previously trying to infer the Name(NotImplemented) returned an YES object.

  • Add astroid.helpers, a module of various useful utilities which don’t belong yet into other components. Added object_type, a function which can be used to obtain the type of almost any astroid object, similar to how the builtin type works.

  • Understand the one-argument form of the builtin type.

    This uses the recently added astroid.helpers.object_type in order to retrieve the Python type of the first argument of the call.

  • Add helpers.is_supertype and helpers.is_subtype, two functions for checking if an object is a super/sub type of another.

  • Improve the inference of binary arithmetic operations (normal and augmented).

  • Add support for retrieving TypeErrors for binary arithmetic operations.

    The change is similar to what was added for UnaryOps: a new method called type_errors for both AugAssign and BinOp, which can be used to retrieve type errors occurred during inference. Also, a new exception object was added, BinaryOperationError.

  • Lambdas found at class level, which have a self argument, are considered BoundMethods when accessing them from instances of their class.

  • Add support for multiplication of tuples and lists with instances which provides an __index__ returning-int method.

  • Add support for indexing containers with instances which provides an __index__ returning-int method.

  • Star unpacking in assignments returns properly a list, not the individual components. Closes issue #138.

  • Add annotation support for function.as_string(). Closes issue #37.

  • Add support for indexing bytes on Python 3.

  • Add support for inferring subscript on instances, which will use __getitem__. Closes issue #124.

  • Add support for pkg_resources.declare_namespaces.

  • Move pyreverse specific modules and functionality back into pyreverse (astroid.manager.Project, astroid.manager.Manager.project_from_files).

  • Understand metaclasses added with six.add_metaclass decorator. Closes issue #129.

  • Add a new convenience API, astroid.parse, which can be used to retrieve an astroid AST from a source code string, similar to how ast.parse can be used to obtain a Python AST from a source string. This is the test_utils.build_module promoted to a public API.

  • do_import_module passes the proper relative_only flag if the level is higher than 1. This has the side effect that using from .something import something in a non-package will finally result in an import-error on Pylint’s side. Until now relative_only was ignored, leading to the import of something, if it was globally available.

  • Add get_wrapping_class API to scoped_nodes, which can be used to retrieve the class that wraps a node.

  • Class.getattr looks by default in the implicit and the explicit metaclasses, which is type on Python 3.

    Closes issue #114.

  • There’s a new separate step for transforms.

    Until now, the transforms were applied at the same time the tree was being built. This was problematic if the transform functions were using inference, since the inference was executed on a partially constructed tree, which led to failures when post-building information was needed (such as setting the _from_names for the From imports). Now there’s a separate step for transforms, which are applied using transform.TransformVisitor. There’s a couple of other related changes:

    • astroid.parse and AstroidBuilder gained a new parameter apply_transforms, which is a boolean flag, which will control if the transforms are applied. We do this because there are uses when the vanilla tree is wanted, without any implicit modification.

    • the transforms are also applied for builtin modules, as a side effect of the fact that transform visiting was moved in AstroidBuilder._post_build from AstroidBuilder._data_build.

    Closes issue #116.

  • Class._explicit_metaclass is now a public API, in the form of Class.declared_metaclass.

    Class.mro remains the de facto method for retrieving the metaclass of a class, which will also do an evaluation of what declared_metaclass returns.

  • Understand slices of tuples, lists, strings and instances with support for slices.

    Closes issue #137.

  • Add proper grammatical names for inferred and ass_type methods, namely inferred and assign_type.

    The old methods will raise PendingDeprecationWarning, being slated for removal in astroid 2.0.

  • Add new AST names in order to be similar to the ones from the builtin ast module.

    With this change, Getattr becomes Attributes, Backquote becomes Repr, Class is ClassDef, Function is FunctionDef, Discard is Expr, CallFunc is Call, From is ImportFrom, AssName is AssignName and AssAttr is AssignAttr. The old names are maintained for backwards compatibility and they are interchangeable, in the sense that using Discard will use Expr under the hood and the implemented visit_discard in checkers will be called with Expr nodes instead. The AST does not contain the old nodes, only the interoperability between them hides this fact. Recommendations to move to the new nodes are emitted accordingly, the old names will be removed in astroid 2.0.

  • Add support for understanding class creation using type.__new__(mcs, name, bases, attrs)`

    Until now, inferring this kind of calls resulted in Instances, not in classes, since astroid didn’t understand that the presence of the metaclass in the call leads to a class creating, not to an instance creation.

  • Understand the slice builtin. Closes issue #184.

  • Add brain tips for numpy.core, which should fix Pylint’s #453.

  • Add a new node, DictUnpack, which is used to represent the unpacking of a dictionary into another dictionary, using PEP 448 specific syntax ({1:2, **{2:3})

    This is a different approach than what the builtin ast module does, since it just uses None to represent this kind of operation, which seems conceptually wrong, due to the fact the AST contains non-AST nodes. Closes issue #206.

What’s New in astroid 1.3.6?#

Release date: 2015-03-14

  • Class.slots raises NotImplementedError for old style classes. Closes issue #67.

  • Add a new option to AstroidManager, optimize_ast, which controls if peephole optimizer should be enabled or not. This prevents a regression, where the visit_binop method wasn’t called anymore with astroid 1.3.5, due to the differences in the resulting AST. Closes issue #82.

What’s New in astroid 1.3.5?#

Release date: 2015-03-11

  • Add the ability to optimize small ast subtrees, with the first use in the optimization of multiple BinOp nodes. This removes recursivity in the rebuilder when dealing with a lot of small strings joined by the addition operator. Closes issue #59.

  • Obtain the methods for the nose brain tip through an unittest.TestCase instance. Closes Pylint issue #457.

  • Fix a crash which occurred when a class was the ancestor of itself. Closes issue #78.

  • Improve the scope_lookup method for Classes regarding qualified objects, with an attribute name exactly as one provided in the class itself.

    For example, a class containing an attribute ‘first’, which was also an import and which had, as a base, a qualified name or a Gettattr node, in the form ‘module.first’, then Pylint would have inferred the first name as the function from the Class, not the import. Closes Pylint issue #466.

  • Implement the assigned_stmts operation for Starred nodes, which was omitted when support for Python 3 was added in astroid. Closes issue #36.

What’s New in astroid 1.3.4?#

Release date: 2015-01-17

  • Get the first element from the method list when obtaining the functions from Closes Pylint issue #448.

What’s New in astroid 1.3.3?#

Release date: 2015-01-16

  • Restore file_stream to a property, but deprecate it in favour of the newly added method By using a method instead of a property, it will be easier to properly close the file right after it is used, which will ensure that no file descriptors are leaked. Until now, due to the fact that a module was cached, it was not possible to close the file_stream anywhere. file_stream will start emitting PendingDeprecationWarnings in astroid 1.4, DeprecationWarnings in astroid 1.5 and it will be finally removed in astroid 1.6.

  • Add inference tips for ‘tuple’, ‘list’, ‘dict’ and ‘set’ builtins.

  • Add brain definition for most string and unicode methods

  • Changed the API for Class.slots. It returns None when the class doesn’t define any slots. Previously, for both the cases where the class didn’t have slots defined and when it had an empty list of slots, Class.slots returned an empty list.

  • Add a new method to Class nodes, ‘mro’, for obtaining the the method resolution order of the class.

  • Add brain tips for six.moves. Closes issue #63.

  • Improve the detection for functions decorated with decorators which returns static or class methods.

  • .slots() can contain unicode strings on Python 2.

  • Add inference tips for

What’s New in astroid 1.3.2?#

Release date: 2014-11-22

  • Fixed a crash with invalid subscript index.

  • Implement proper base class semantics for Python 3, where every class derives from object.

  • Allow more fine-grained control over C extension loading in the manager.

What’s New in astroid 1.3.1?#

Release date: 2014-11-21

  • Fixed a crash issue with the pytest brain module.

What’s New in astroid 1.3.0?#

Release date: 2014-11-20

  • Fix a maximum recursion error occurred during the inference, where statements with the same name weren’t filtered properly. Closes pylint issue #295.

  • Check that EmptyNode has an underlying object in EmptyNode.has_underlying_object.

  • Simplify the understanding of enum members.

  • Fix an infinite loop with decorator call chain inference, where the decorator returns itself. Closes issue #50.

  • Various speed improvements. Patch by Alex Munroe.

  • Add pytest brain plugin. Patch by Robbie Coomber.

  • Support for Python versions < 2.7 has been dropped, and the source has been made compatible with Python 2 and 3. Running 2to3 on installation for Python 3 is not needed anymore.

  • astroid now depends on six.

  • modutils._module_file opens in binary mode. Closes issues #51 and #13.

  • Only C extensions from trusted sources (the standard library) are loaded into the examining Python process to build an AST from the live module.

  • Path names on case-insensitive filesystems are now properly handled. This fixes the stdlib detection code on Windows.

  • Metaclass-generating functions like six.with_metaclass are now supported via some explicit detection code.

  • astroid.register_module_extender has been added to generalize the support for module extenders as used by many brain plugins.

  • brain plugins can now register hooks to handle failed imports, as done by the gobject-introspection plugin.

  • The modules have been moved to a separate package directory, develop now works correctly.

What’s New in astroid 1.2.1?#

Release date: 2014-08-24

  • Fix a crash occurred when inferring decorator call chain. Closes issue #42.

  • Set the parent of vararg and kwarg nodes when inferring them. Closes issue #43.

  • namedtuple inference knows about ‘_fields’ attribute.

  • enum members knows about the methods from the enum class.

  • Name inference will lookup in the parent function of the current scope, in case searching in the current scope fails.

  • Inference of the functional form of the enums takes into consideration the various inputs that enums accepts.

  • The inference engine handles binary operations (add, mul etc.) between instances.

  • Fix an infinite loop in the inference, by returning a copy of instance attributes, when calling ‘instance_attr’. Closes issue #34 (patch by Emile Anclin).

  • Don’t crash when trying to infer unbound object.__new__ call. Closes issue #11.

What’s New in astroid 1.2.0?#

Release date: 2014-07-25

  • Function nodes can detect decorator call chain and see if they are decorated with builtin descriptors (classmethod and staticmethod).

  • infer_call_result called on a subtype of the builtin type will now return a new Class rather than an Instance.

  • Class.metaclass() now handles module-level __metaclass__ declaration on python 2, and no longer looks at the __metaclass__ class attribute on python 3.

  • Function nodes can detect if they are decorated with subclasses of builtin descriptors when determining their type (classmethod and staticmethod).

  • Add slots method to Class nodes, for retrieving the list of valid slots it defines.

  • Expose function annotation to astroid: Arguments node exposes ‘varargannotation’, ‘kwargannotation’ and ‘annotations’ attributes, while Function node has the ‘returns’ attribute.

  • Backported most of the logilab.common.modutils module there, as most things there are for pylint/astroid only and we want to be able to fix them without requiring a new logilab.common release

  • Fix names grabbed using wildcard import in “absolute import mode” (ie with absolute_import activated from the __future__ or with python 3). Fix pylint issue #58.

  • Add support in pylint-brain for understanding enum classes.

What’s New in astroid 1.1.1?#

Release date: 2014-04-30

  • Class.metaclass() looks in ancestors when the current class does not define explicitly a metaclass.

  • Do not cache modules if a module with the same qname is already known, and only return cached modules if both name and filepath match. Fixes pylint Bitbucket issue #136.

What’s New in astroid 1.1.0?#

Release date: 2014-04-18

  • All class nodes are marked as new style classes for Py3k.

  • Add a metaclass function to Class nodes to retrieve their metaclass.

  • Add a new YieldFrom node.

  • Add support for inferring arguments to namedtuple invocations.

  • Make sure that objects returned for namedtuple inference have parents.

  • Don’t crash when inferring nodes from with clauses with multiple context managers. Closes #18.

  • Don’t crash when a class has some __call__ method that is not inferable. Closes #17.

  • Unwrap instances found in .ancestors(), by using their _proxied class.

What’s New in astroid 1.0.1?#

Release date: 2013-10-18

  • fix py3k/windows installation issue (issue #4)

  • fix bug with namedtuple inference (issue #3)

  • get back gobject introspection from pylint-brain

  • fix some test failures under pypy and py3.3, though there is one remaining in each of these platform (2.7 tests are all green)

What’s New in astroid 1.0.0?#

Release date: 2013-07-29

  • Fix some omissions in py2stdlib’s version of hashlib and add a small test for it.

  • Properly recognize methods annotated with abc.abstract{property,method} as abstract.

  • Allow transformation functions on any node, providing a register_transform function on the manager instead of the register_transformer to make it more flexible wrt node selection

  • Use the new transformation API to provide support for namedtuple (actually in pylint-brain, closes #8766)

  • Added the test_utils module for building ASTs and extracting deeply nested nodes for easier testing.

  • Add support for py3k’s keyword only arguments (PEP 3102)

  • RENAME THE PROJECT to astroid

What’s New in astroid 0.24.3?#

Release date: 2013-04-16

  • #124360 [py3.3]: Don’t crash on ‘yield from’ nodes

  • #123062 [pylint-brain]: Use correct names for keywords for urlparse

  • #123056 [pylint-brain]: Add missing methods for hashlib

  • #123068: Fix inference for generator methods to correctly handle yields in lambdas.

  • #123068: Make sure .as_string() returns valid code for yields in expressions.

  • #47957: Set literals are now correctly treated as inference leaves.

  • #123074: Add support for inference of subscript operations on dict literals.

What’s New in astroid 0.24.2?#

Release date: 2013-02-27

  • pylint-brain: more subprocess.Popen faking (see #46273)

  • #109562 [jython]: java modules have no __doc__, causing crash

  • #120646 [py3]: fix for python3.3 _ast changes which may cause crash

  • #109988 [py3]: test fixes

What’s New in astroid 0.24.1?#

Release date: 2012-10-05

  • #106191: fix __future__ absolute import w/ From node

  • #50395: fix function fromlineno when some decorator is splited on multiple lines (patch by Mark Gius)

  • #92362: fix pyreverse crash on relative import

  • #104041: fix crash ‘module object has no file_encoding attribute’

  • #4294 (pylint-brain): bad inference on

  • #46273 (pylint-brain): bad inference subprocess.Popen.communicate

What’s New in astroid 0.24.0?#

Release date: 2012-07-18

  • include pylint brain extension, describing some stuff not properly understood until then. (#100013, #53049, #23986, #72355)

  • #99583: fix raw_building.object_build for pypy implementation

  • use open rather than file in scoped_nodes as 2to3 miss it

What’s New in astroid 0.23.1?#

Release date: 2011-12-08

  • #62295: avoid “OSError: Too many open files” by moving .file_stream as a Module property opening the file only when needed

  • Lambda nodes should have a name attribute

  • only call transformers if modname specified

What’s New in astroid 0.23.0?#

Release date: 2011-10-07

  • #77187: ancestor() only returns the first class when inheriting from two classes coming from the same module

  • #76159: putting module’s parent directory on the path causes problems linting when file names clash

  • #74746: should return empty module when __main__ is imported (patch by google)

  • #74748: getitem protocol return constant value instead of a Const node (patch by google)

  • #77188: support lgc.decorators.classproperty

  • #77253: provide a way for user code to register astng “transformers” using manager.register_transformer(callable) where callable will be called after an astng has been built and given the related module node as argument

What’s New in astroid 0.22.0?#

Release date: 2011-07-18

  • added column offset information on nodes (patch by fawce)

  • #70497: Crash on AttributeError: ‘NoneType’ object has no attribute ‘_infer_name’

  • #70381: IndentationError in import causes crash

  • #70565: absolute imports treated as relative (patch by Jacek Konieczny)

  • #70494: fix file encoding detection with python2.x

  • py3k: __builtin__ module renamed to builtins, we should consider this to properly build ast for builtin objects

What’s New in astroid 0.21.1?#

Release date: 2011-01-11

  • python3: handle file encoding; fix a lot of tests

  • fix #52006: “True” and “False” can be assigned as variable in Python2x

  • fix #8847: pylint doesn’t understand function attributes at all

  • fix #8774: iterator / generator / next method

  • fix bad building of ast from living object w/ container classes (eg dict, set, list, tuple): contained elements should be turned to ast as well (not doing it will much probably cause crash later)

  • somewhat fix #57299 and other similar issue: Exception when trying to validate file using PyQt’s PyQt4.QtCore module: we can’t do much about it but at least catch such exception to avoid crash

What’s New in astroid 0.21.0?#

Release date: 2010-11-15

  • python3.x: first python3.x release

  • fix #37105: Crash on AttributeError: ‘NoneType’ object has no attribute ‘_infer_name’

  • python2.4: drop python < 2.5 support

What’s New in astroid 0.20.4?#

Release date: 2010-10-27

  • fix #37868 #37665 #33638 #37909: import problems with absolute_import_activated

  • fix #8969: false positive when importing from zip-safe eggs

  • fix #46131: minimal class decorator support

  • minimal python2.7 support (dict and set comprehension)

  • important progress on Py3k compatibility

What’s New in astroid 0.20.3?#

Release date: 2010-09-28

  • restored python 2.3 compatibility

  • fix #45959: AttributeError: ‘NoneType’ object has no attribute ‘frame’, due

    to handling of __class__ when importing from living object (because of missing source code or C-compiled object)

What’s New in astroid 0.20.2?#

Release date: 2010-09-10

  • fix astng building bug: we’ve to set module.package flag at the node creation time otherwise we’ll miss this information when inferring relative import during the build process (this should fix for instance some problems with numpy)

  • added __subclasses__ to special class attribute

  • fix Class.interfaces so that no InferenceError raised on empty __implements__

  • yield YES on multiplication of tuple/list with non valid operand

What’s New in astroid 0.20.1?#

Release date: 2010-05-11

  • fix licensing to LGPL

  • add ALL_NODES_CLASSES constant to nodes module

  • nodes redirection cleanup (possible since refactoring)

  • bug fix for python < 2.5: add Delete node on Subscript nodes if we are in a del context

What’s New in astroid 0.20.0?#

Release date: 2010-03-22

  • fix #20464: raises ?TypeError: ‘_Yes’ object is not iterable? on list inference

  • fix #19882: pylint hangs

  • fix #20759: crash on pyreverse UNARY_OP_METHOD KeyError ‘~’

  • fix #20760: crash on pyreverse : AttributeError: ‘Subscript’ object has no attribute ‘infer_lhs’

  • fix #21980: [Python-modules-team] Bug#573229 : Pylint hangs; improving the cache yields a speed improvement on big projects

  • major refactoring: rebuild the tree instead of modify / monkey patching

  • fix #19641: “maximum recursion depth exceeded” messages w/ python 2.6 this was introduced by a refactoring

  • Ned Batchelder patch to properly import eggs with Windows line endings. This fixes a problem with pylint not being able to import setuptools.

  • Winfried Plapper patches fixing .op attribute value for AugAssign nodes, visit_ifexp in nodes_as_string

  • Edward K. Ream / Tom Fleck patch closes #19641 (maximum recursion depth exceeded” messages w/ python 2.6), see

What’s New in astroid 0.19.3?#

Release date: 2009-12-18

  • fix name error making 0.19.2 almost useless

What’s New in astroid 0.19.2?#

Release date: 2009-12-18

  • fix #18773: inference bug on class member (due to bad handling of instance / class nodes “bounded” to method calls)

  • fix #9515: strange message for non-class “Class baz has no egg member” (due to bad inference of function call)

  • fix #18953: inference fails with augmented assignment (special case for augmented assignment in infer_ass method)

  • fix #13944: false positive for class/instance attributes (Instance.getattr should return assign nodes on instance classes as well as instance.

  • include spelling fixes provided by Dotan Barak

What’s New in astroid 0.19.1?#

Release date: 2009-08-27

  • fix #8771: crash on yield expression

  • fix #10024: line numbering bug with try/except/finally

  • fix #10020: when building from living object, __name__ may be None

  • fix #9891: help(logilab.astng) throws TypeError

  • fix #9588: false positive E1101 for augmented assignment

What’s New in astroid 0.19.0?#

Release date: 2009-03-25

  • fixed python 2.6 issue (tests ok w/ 2.4, 2.5, 2.6. Anyone using 2.2 / 2.3 to tell us if it works?)

  • some understanding of the decorator

  • inference: introduce UnboundMethod / rename InstanceMethod to BoundMethod

What’s New in astroid 0.18.0?#

Release date: 2009-03-19

  • major api / tree structure changes to make it works with compiler and python >= 2.5 _ast module

  • cleanup and refactoring on the way

What’s New in astroid 0.17.4?#

Release date: 2008-11-19

  • fix #6015: filter statements bug triggering W0631 false positive in pylint

  • fix #5571: Function.is_method() should return False on module level functions decorated by staticmethod/classmethod (avoid some crash in pylint)

  • fix #5010: understand python 2.5 explicit relative imports

What’s New in astroid 0.17.3?#

Release date: 2008-09-10

  • fix #5889: astng crash on certain pyreverse projects

  • fix bug w/ loop assignment in .lookup

  • apply Maarten patch fixing a crash on TryFinalaly.block_range and fixing ‘else’/’final’ block line detection

What’s New in astroid 0.17.2?#

Release date: 2008-01-14

  • “with” statement support, patch provided by Brian Hawthorne

  • fixed recursion arguments in nodes_of_class method as notified by Dave Borowitz

  • new InstanceMethod node introduced to wrap bound method (e.g. Function node), patch provided by Dave Borowitz

What’s New in astroid 0.17.1?#

Release date: 2007-06-07

  • fix #3651: crash when callable as default arg

  • fix #3670: subscription inference crash in some cases

  • fix #3673: Lambda instance has no attribute ‘pytype’

  • fix crash with chained “import as”

  • fix crash on numpy

  • fix potential InfiniteRecursion error with builtin objects

  • include patch from Marien Zwart fixing some test / py 2.5

  • be more error resilient when accessing living objects from external code in the manager

What’s New in astroid 0.17.0?#

Release date: 2007-02-22

  • api change to be able to infer using a context (used to infer function call result only for now)

  • slightly better inference on astng built from living object by trying to infer dummy nodes (able to infer ‘help’ builtin for instance)

  • external attribute definition support

  • basic math operation inference

  • new pytype method on possibly inferred node (e.g. module, classes, const…)

  • fix a living object astng building bug, which was making “open” uninferable

  • fix lookup of name in method bug (#3289)

  • fix decorator lookup bug (#3261)

What’s New in astroid 0.16.3?#

Release date: 2006-11-23

  • enhance inference for the subscription notation (motivated by a patch from Amaury) and for unary sub/add

What’s New in astroid 0.16.2?#

Release date: 2006-11-15

  • grrr, fixed python 2.3 incompatibility introduced by generator expression scope handling

  • upgrade to avoid warnings with logilab-common 0.21.0 (on which now depends so)

  • backported astutils module from logilab-common

What’s New in astroid 0.16.1?#

Release date: 2006-09-25

  • python 2.5 support, patch provided by Marien Zwart

  • fix [Class|Module].block_range method (this fixes pylint’s inline disabling of messages on classes/modules)

  • handle class.__bases__ and class.__mro__ (proper metaclass handling still needed though)

  • drop python2.2 support: remove code that was working around python2.2

  • fixed generator expression scope bug

  • patch transformer to extract correct line information

What’s New in astroid 0.16.0?#

Release date: 2006-04-19

  • fix living object building to consider classes such as property as a class instead of a data descriptor

  • fix multiple assignment inference which was discarding some solutions

  • added some line manipulation methods to handle pylint’s block messages control feature (Node.last_source_line(), None.block_range(lineno)

What’s New in astroid 0.15.1?#

Release date: 2006-03-10

  • fix avoiding to load everything from living objects… Thanks Amaury!

  • fix a possible NameError in Instance.infer_call_result

What’s New in astroid 0.15.0?#

Release date: 2006-03-06

  • fix possible infinite recursion on global statements (close #10342) and in various other cases…

  • fix locals/globals interactions when the global statement is used (close #10434)

  • multiple inference related bug fixes

  • associate List, Tuple and Dict and Const nodes to their respective classes

  • new .ass_type method on assignment related node, returning the assignment type node (Assign, For, ListCompFor, GenExprFor, TryExcept)

  • more API refactoring… .resolve method has disappeared, now you have .ilookup on every nodes and .getattr/.igetattr on node supporting the attribute protocol

  • introduced a YES object that may be returned when there is ambiguity on an inference path (typically function call when we don’t know arguments value)

  • builder try to instantiate builtin exceptions subclasses to get their instance attribute

What’s New in astroid 0.14.0?#

Release date: 2006-01-10

  • some major inference improvements and refactoring ! The drawback is the introduction of some non backward compatible change in the API but it’s imho much cleaner and powerful now :)

  • new boolean property .newstyle on Class nodes (implements #10073)

  • new .import_module method on Module node to help in .resolve refactoring

  • .instance_attrs has list of assignments to instance attribute dictionary as value instead of one

  • added missing GenExprIf and GenExprInner nodes, and implements as_string for each generator expression related nodes

  • specifically catch KeyboardInterrupt to reraise it in some places

  • fix so that module names are always absolute

  • fix .resolve on package where a subpackage is imported in the __init__ file

  • fix a bug regarding construction of Function node from living object with earlier version of python 2.4

  • fix a NameError on Import and From self_resolve method

  • fix a bug occurring when building an astng from a living object with a property

  • lint fixes

What’s New in astroid 0.13.1?#

Release date: 2005-11-07

  • fix bug on building from living module the same object in encountered more than once time (e.g. builtins.object) (close #10069)

  • fix bug in Class.ancestors() regarding inner classes (close #10072)

  • fix .self_resolve() on From and Module nodes to handle package precedence over module (close #10066)

  • locals dict for package contains __path__ definition (close #10065)

  • astng provide GenExpr and GenExprFor nodes with python >= 2.4 (close #10063)

  • fix python2.2 compatibility (close #9922)

  • link .__contains__ to .has_key on scoped node to speed up execution

  • remove no more necessary .module_object() method on From and Module nodes

  • normalize parser.ParserError to SyntaxError with python 2.2

What’s New in astroid 0.13.0?#

Release date: 2005-10-21

  • .locals and .globals on scoped node handle now a list of references

    to each assignment statements instead of a single reference to the first assignment statement.

  • fix bug with manager.astng_from_module_name when a context file is given (notably fix ZODB 3.4 crash with pylint/pyreverse)

  • fix Compare.as_string method

  • fix bug with lambda object missing the “type” attribute

  • some minor refactoring

  • This package has been extracted from the logilab-common package, which will be kept for some time for backward compatibility but will no longer be maintained (this explains that this package is starting with the 0.13 version number, since the fork occurs with the version released in logilab-common 0.12).