Inference results

Inference does not always end on a node. These are the other values it can yield, and the messages it produces for operations that cannot work.

The singleton itself is astroid.Uninferable.

astroid.util.UninferableBase()	Special inference object, which is returned when inference fails.
astroid.util.BadOperationMessage()	Object which describes a TypeError occurred somewhere in the inference chain.
astroid.util.BadUnaryOperationMessage(...)	Object which describes operational failures on UnaryOps.
astroid.util.BadBinaryOperationMessage(...)	Object which describes type errors for BinOps.