Overview of all Pylint messages¶
Pylint can emit the following messages:
Fatal¶
All messages in the fatal category:
All renamed messages in the fatal category:
Error¶
All messages in the error category:
- abstract-class-instantiated / E0110
- access-member-before-definition / E0203
- assigning-non-slot / E0237
- assignment-from-no-return / E1111
- assignment-from-none / E1128
- await-outside-async / E1142
- bad-configuration-section / E0014
- bad-except-order / E0701
- bad-exception-context / E0703
- bad-format-character / E1300
- bad-option-value / E0012
- bad-plugin-value / E0013
- bad-reversed-sequence / E0111
- bad-str-strip-call / E1310
- bad-string-format-type / E1307
- bad-super-call / E1003
- bidirectional-unicode / E2502
- broken-collections-callable / E6005
- broken-noreturn / E6004
- catching-non-exception / E0712
- class-variable-slots-conflict / E0242
- continue-in-finally / E0116
- dict-iter-missing-items / E1141
- duplicate-argument-name / E0108
- duplicate-bases / E0241
- format-needs-mapping / E1303
- function-redefined / E0102
- import-error / E0401
- inconsistent-mro / E0240
- inherit-non-class / E0239
- init-is-generator / E0100
- invalid-all-format / E0605
- invalid-all-object / E0604
- invalid-bool-returned / E0304
- invalid-bytes-returned / E0308
- invalid-character-backspace / E2510
- invalid-character-carriage-return / E2511
- invalid-character-esc / E2513
- invalid-character-nul / E2514
- invalid-character-sub / E2512
- invalid-character-zero-width-space / E2515
- invalid-class-object / E0243
- invalid-envvar-value / E1507
- invalid-format-returned / E0311
- invalid-getnewargs-ex-returned / E0313
- invalid-getnewargs-returned / E0312
- invalid-hash-returned / E0309
- invalid-index-returned / E0305
- invalid-length-hint-returned / E0310
- invalid-length-returned / E0303
- invalid-metaclass / E1139
- invalid-repr-returned / E0306
- invalid-sequence-index / E1126
- invalid-slice-index / E1127
- invalid-slots / E0238
- invalid-slots-object / E0236
- invalid-star-assignment-target / E0113
- invalid-str-returned / E0307
- invalid-unary-operand-type / E1130
- invalid-unicode-codec / E2501
- logging-format-truncated / E1201
- logging-too-few-args / E1206
- logging-too-many-args / E1205
- logging-unsupported-format / E1200
- method-hidden / E0202
- misplaced-bare-raise / E0704
- misplaced-format-function / E0119
- missing-format-string-key / E1304
- missing-kwoa / E1125
- mixed-format-string / E1302
- modified-iterating-dict / E4702
- modified-iterating-set / E4703
- no-member / E1101
- no-method-argument / E0211
- no-name-in-module / E0611
- no-self-argument / E0213
- no-value-for-parameter / E1120
- non-iterator-returned / E0301
- nonexistent-operator / E0107
- nonlocal-and-global / E0115
- nonlocal-without-binding / E0117
- not-a-mapping / E1134
- not-an-iterable / E1133
- not-async-context-manager / E1701
- not-callable / E1102
- not-context-manager / E1129
- not-in-loop / E0103
- notimplemented-raised / E0711
- raising-bad-type / E0702
- raising-non-exception / E0710
- redundant-keyword-arg / E1124
- relative-beyond-top-level / E0402
- repeated-keyword / E1132
- return-arg-in-generator / E0106
- return-in-init / E0101
- return-outside-function / E0104
- star-needs-assignment-target / E0114
- syntax-error / E0001
- too-few-format-args / E1306
- too-many-format-args / E1305
- too-many-function-args / E1121
- too-many-star-expressions / E0112
- truncated-format-string / E1301
- undefined-all-variable / E0603
- undefined-variable / E0602
- unexpected-keyword-arg / E1123
- unexpected-special-method-signature / E0302
- unhashable-dict-key / E1140
- unpacking-non-sequence / E0633
- unrecognized-inline-option / E0011
- unsubscriptable-object / E1136
- unsupported-assignment-operation / E1137
- unsupported-binary-operation / E1131
- unsupported-delete-operation / E1138
- unsupported-membership-test / E1135
- used-before-assignment / E0601
- used-prior-global-declaration / E0118
- yield-inside-async-function / E1700
- yield-outside-function / E0105
All renamed messages in the error category:
Warning¶
All messages in the warning category:
- abstract-method / W0223
- anomalous-backslash-in-string / W1401
- anomalous-unicode-escape-in-string / W1402
- arguments-differ / W0221
- arguments-out-of-order / W1114
- arguments-renamed / W0237
- assert-on-string-literal / W0129
- assert-on-tuple / W0199
- assign-to-new-keyword / W0111
- attribute-defined-outside-init / W0201
- bad-builtin / W0141
- bad-format-string / W1302
- bad-format-string-key / W1300
- bad-indentation / W0311
- bad-open-mode / W1501
- bad-staticmethod-argument / W0211
- bad-thread-instantiation / W1506
- bare-except / W0702
- binary-op-exception / W0711
- boolean-datetime / W1502
- broad-except / W0703
- cache-max-size-none / W1517
- cell-var-from-loop / W0640
- comparison-with-callable / W0143
- confusing-with-statement / W0124
- consider-ternary-expression / W0160
- dangerous-default-value / W0102
- deprecated-argument / W1511
- deprecated-class / W1512
- deprecated-decorator / W1513
- deprecated-method / W1505
- deprecated-module / W0402
- deprecated-typing-alias / W6001
- differing-param-doc / W9017
- differing-type-doc / W9018
- duplicate-except / W0705
- duplicate-key / W0109
- duplicate-string-formatting-argument / W1308
- eq-without-hash / W1641
- eval-used / W0123
- exec-used / W0122
- expression-not-assigned / W0106
- f-string-without-interpolation / W1309
- fixme / W0511
- forgotten-debug-statement / W1515
- format-combined-specification / W1305
- format-string-without-interpolation / W1310
- global-at-module-level / W0604
- global-statement / W0603
- global-variable-not-assigned / W0602
- global-variable-undefined / W0601
- implicit-str-concat / W1404
- import-self / W0406
- inconsistent-quotes / W1405
- invalid-envvar-default / W1508
- invalid-format-index / W1307
- invalid-overridden-method / W0236
- isinstance-second-argument-not-valid-type / W1116
- keyword-arg-before-vararg / W1113
- logging-format-interpolation / W1202
- logging-fstring-interpolation / W1203
- logging-not-lazy / W1201
- lost-exception / W0150
- misplaced-future / W0410
- missing-any-param-doc / W9021
- missing-format-argument-key / W1303
- missing-format-attribute / W1306
- missing-param-doc / W9015
- missing-parentheses-for-call-in-test / W0126
- missing-raises-doc / W9006
- missing-return-doc / W9011
- missing-return-type-doc / W9012
- missing-type-doc / W9016
- missing-yield-doc / W9013
- missing-yield-type-doc / W9014
- modified-iterating-list / W4701
- multiple-constructor-doc / W9005
- nan-comparison / W0177
- no-init / W0232
- non-ascii-file-name / W2402
- non-parent-init-called / W0233
- non-str-assignment-to-dunder-name / W1115
- overlapping-except / W0714
- overridden-final-method / W0239
- pointless-statement / W0104
- pointless-string-statement / W0105
- possibly-unused-variable / W0641
- preferred-module / W0407
- protected-access / W0212
- raise-missing-from / W0707
- raising-format-tuple / W0715
- redeclared-assigned-name / W0128
- redefined-builtin / W0622
- redefined-outer-name / W0621
- redefined-slots-in-subclass / W0244
- redundant-returns-doc / W9008
- redundant-u-string-prefix / W1406
- redundant-unittest-assert / W1503
- redundant-yields-doc / W9010
- reimported / W0404
- self-assigning-variable / W0127
- self-cls-assignment / W0642
- shallow-copy-environ / W1507
- signature-differs / W0222
- subclassed-final-class / W0240
- subprocess-popen-preexec-fn / W1509
- subprocess-run-check / W1510
- super-init-not-called / W0231
- too-many-try-statements / W0717
- try-except-raise / W0706
- unbalanced-tuple-unpacking / W0632
- undefined-loop-variable / W0631
- unnecessary-ellipsis / W2301
- unnecessary-lambda / W0108
- unnecessary-pass / W0107
- unnecessary-semicolon / W0301
- unreachable / W0101
- unspecified-encoding / W1514
- unused-argument / W0613
- unused-format-string-argument / W1304
- unused-format-string-key / W1301
- unused-import / W0611
- unused-private-member / W0238
- unused-variable / W0612
- unused-wildcard-import / W0614
- useless-else-on-loop / W0120
- useless-param-doc / W9019
- useless-super-delegation / W0235
- useless-type-doc / W9020
- useless-with-lock / W2101
- using-constant-test / W0125
- using-f-string-in-unsupported-version / W2601
- using-final-decorator-in-unsupported-version / W2602
- while-used / W0149
- wildcard-import / W0401
- wrong-exception-operation / W0716
All renamed messages in the warning category:
- implicit-str-concat-in-sequence / W1403
- lru-cache-decorating-method / W1516
- old-assignment-from-none / W1111
- old-empty-docstring / W0132
- old-missing-param-doc / W9003
- old-missing-returns-doc / W9007
- old-missing-type-doc / W9004
- old-missing-yields-doc / W9009
- old-non-iterator-returned-1 / W0234
- old-unidiomatic-typecheck / W0154
- old-unpacking-non-sequence / W0633
Convention¶
All messages in the convention category:
- bad-classmethod-argument / C0202
- bad-docstring-quotes / C0198
- bad-file-encoding / C2503
- bad-mcs-classmethod-argument / C0204
- bad-mcs-method-argument / C0203
- compare-to-empty-string / C1901
- compare-to-zero / C2001
- consider-iterating-dictionary / C0201
- consider-using-any-or-all / C0501
- consider-using-dict-items / C0206
- consider-using-enumerate / C0200
- consider-using-f-string / C0209
- disallowed-name / C0104
- docstring-first-line-empty / C0199
- empty-docstring / C0112
- import-outside-toplevel / C0415
- import-private-name / C2701
- invalid-characters-in-docstring / C0403
- invalid-name / C0103
- line-too-long / C0301
- misplaced-comparison-constant / C2201
- missing-class-docstring / C0115
- missing-final-newline / C0304
- missing-function-docstring / C0116
- missing-module-docstring / C0114
- mixed-line-endings / C0327
- multiple-imports / C0410
- multiple-statements / C0321
- non-ascii-module-import / C2403
- non-ascii-name / C2401
- single-string-used-for-slots / C0205
- singleton-comparison / C0121
- superfluous-parens / C0325
- too-many-lines / C0302
- trailing-newlines / C0305
- trailing-whitespace / C0303
- typevar-name-incorrect-variance / C0105
- unexpected-line-ending-format / C0328
- ungrouped-imports / C0412
- unidiomatic-typecheck / C0123
- unneeded-not / C0113
- use-implicit-booleaness-not-comparison / C1803
- use-implicit-booleaness-not-len / C1802
- use-maxsplit-arg / C0207
- use-sequence-for-iteration / C0208
- useless-import-alias / C0414
- wrong-import-order / C0411
- wrong-import-position / C0413
- wrong-spelling-in-comment / C0401
- wrong-spelling-in-docstring / C0402
All renamed messages in the convention category:
Refactor¶
All messages in the refactor category:
- chained-comparison / R1716
- comparison-with-itself / R0124
- condition-evals-to-constant / R1727
- confusing-consecutive-elif / R5601
- consider-alternative-union-syntax / R6003
- consider-merging-isinstance / R1701
- consider-swap-variables / R1712
- consider-using-alias / R6002
- consider-using-assignment-expr / R6103
- consider-using-dict-comprehension / R1717
- consider-using-from-import / R0402
- consider-using-generator / R1728
- consider-using-get / R1715
- consider-using-in / R1714
- consider-using-join / R1713
- consider-using-max-builtin / R1731
- consider-using-min-builtin / R1730
- consider-using-namedtuple-or-dataclass / R6101
- consider-using-set-comprehension / R1718
- consider-using-sys-exit / R1722
- consider-using-ternary / R1706
- consider-using-tuple / R6102
- consider-using-with / R1732
- cyclic-import / R0401
- duplicate-code / R0801
- else-if-used / R5501
- empty-comment / R2044
- inconsistent-return-statements / R1710
- literal-comparison / R0123
- no-classmethod-decorator / R0202
- no-else-break / R1723
- no-else-continue / R1724
- no-else-raise / R1720
- no-else-return / R1705
- no-self-use / R0201
- no-staticmethod-decorator / R0203
- property-with-parameters / R0206
- redefined-argument-from-local / R1704
- redefined-variable-type / R0204
- simplifiable-condition / R1726
- simplifiable-if-expression / R1719
- simplifiable-if-statement / R1703
- simplify-boolean-expression / R1709
- stop-iteration-return / R1708
- super-with-arguments / R1725
- too-complex / R1260
- too-few-public-methods / R0903
- too-many-ancestors / R0901
- too-many-arguments / R0913
- too-many-boolean-expressions / R0916
- too-many-branches / R0912
- too-many-instance-attributes / R0902
- too-many-locals / R0914
- too-many-nested-blocks / R1702
- too-many-public-methods / R0904
- too-many-return-statements / R0911
- too-many-statements / R0915
- trailing-comma-tuple / R1707
- unnecessary-comprehension / R1721
- unnecessary-dict-index-lookup / R1733
- use-a-generator / R1729
- use-dict-literal / R1735
- use-list-literal / R1734
- use-set-for-membership / R6201
- useless-object-inheritance / R0205
- useless-return / R1711
All renamed messages in the refactor category:
Information¶
All messages in the information category:
All renamed messages in the information category: