v2.16.0b1

New beta release following a performance fix in the new pointless exception statement checks in #8073 and a false positive fixed in the unreleased consider-using-augmented-assign check in #8088. We're also using the latest version of astroid (2.13.3).

The complete changelog will be published when the actual 2.16.0 is released.

v2.16.0b0

This is the beta version of 2.16.0 the complete changelog will be published when the actual 2.16.0 is released.

In 2.16.0 we added aggregation and composition understanding in pyreverse, and a way to clear the cache in between run in server mode (originally for the VS Code integration). Apart from the bug fixes there's also a lot of new checks, and new extensions that have been asked for for a long time that were implemented.

If you want to benefit from all the new checks load the following plugins:

pylint.extensions.dict_init_mutate,
pylint.extensions.dunder,
pylint.extensions.typing,
pylint.extensions.magic_value,

We still welcome any community effort to help review, integrate, and add good/bad examples to the doc for #5953. This should be doable without any pylint or astroid knowledge, so this is the perfect entrypoint if you want to contribute to pylint or open source without any experience with our code!

Last but not least @clavedeluna and @nickdrozd became triagers, welcome to the team !

v2.15.10

False Positives Fixed

• Fix use-sequence-for-iteration when unpacking a set with *.

  Closes #5788

• Fix false positive assigning-non-slot when a class attribute is
  re-assigned.

  Closes #6001

• Fixes used-before-assignment false positive when the walrus operator
  is used in a ternary operator.

  Closes #7779

• Prevent used-before-assignment when imports guarded by if TYPE_CHECKING
  are guarded again when used.

  Closes #7979

Other Bug Fixes

• Using custom braces in msg-template will now work properly.

  Closes #5636

v2.15.9

False Positives Fixed

• Fix false-positive for used-before-assignment in pattern matching with a guard.

  Closes #5327

Other Bug Fixes

• Pylint will no longer deadlock if a parallel job is killed but fail immediately instead.

  Closes #3899

• When pylint exit due to bad arguments being provided the exit code will now be the expected 32.

  Refs #7931

• Fixes a ModuleNotFound exception when running pylint on a Django project with the pylint_django plugin enabled.

  Closes #7938

v2.15.8

False Positives Fixed

• Document a known false positive for useless-suppression when disabling
  line-too-long in a module with only comments and no code.

  Closes #3368

• Fix logging-fstring-interpolation false positive raised when logging and f-string with %s formatting.

  Closes #4984

• Fixes false positive abstract-method on Protocol classes.

  Closes #7209

• Fix missing-param-doc false positive when function parameter has an escaped underscore.

  Closes #7827

• multiple-statements no longer triggers for function stubs using inlined ....

  Closes #7860

v2.15.7

False Positives Fixed

• Fix deprecated-method false positive when alias for method is similar to
  name of deprecated method.

  Closes #5886

• Fix a false positive for used-before-assignment for imports guarded by
  typing.TYPE_CHECKING later used in variable annotations.

  Closes #7609

Other Bug Fixes

• Pylint will now filter duplicates given to it before linting. The output
  should be the same whether a file is given/discovered multiple times or not.

  Closes #6242, #4053

• Fixes a crash in stop-iteration-return when the next builtin is
  called without arguments.

  Closes #7828

v2.15.6

False Positives Fixed

• Fix false positive for unhashable-member when subclassing dict and
  using the subclass as a dictionary key.

  Closes #7501

• unnecessary-list-index-lookup will not be wrongly emitted if
  enumerate is called with start.

  Closes #7682

• Don't warn about stop-iteration-return when using next() over
  itertools.cycle.

  Closes #7765

Other Bug Fixes

• Messages sent to reporter are now copied so a reporter cannot modify the
  message sent to other reporters.

  Closes #7214

• Fixes edge case of custom method named next raised an astroid error.

  Closes #7610

• Fix crash that happened when parsing files with unexpected encoding starting
  with 'utf' like utf13.

  Closes #7661

• Fix a crash when a child class with an __init__ method inherits from a
  parent class with an __init__ class attribute.

  Closes #7742

v2.15.5

What's new in Pylint 2.15.5?

Release date: 2022-10-21

False Positives Fixed

• Fix a false positive for simplify-boolean-expression when multiple values
  are inferred for a constant.

  Closes #7626

Other Bug Fixes

• Remove __index__ dunder method call from unnecessary-dunder-call
  check.

  Closes #6795

• Fixed a multi-processing crash that prevents using any more than 1 thread on
  MacOS.

  The returned module objects and errors that were cached by the linter plugin loader cannot be reliably pickled. This means that dill would throw an error when attempting to serialise the linter object for multi-processing use.

  Closes #7635.

Other Changes

• Add a keyword-only compare_constants argument to safe_infer.

  Refs #7626

• Sort --generated-rcfile output.

  Refs #7655

v2.15.4

False Positives Fixed

• Fix the message for unnecessary-dunder-call for __aiter__ and
  __anext__. Also
  only emit the warning when py-version >= 3.10.

  Closes #7529

Other Bug Fixes

• Fix bug in detecting unused-variable when iterating on variable.

  Closes #3044

• Fixed handling of -- as separator between positional arguments and flags.
  This was not actually fixed in 2.14.5.

  Closes #7003, Refs #7096

• Report no-self-argument rather than no-method-argument for methods
  with variadic arguments.

  Closes #7507

• Fixed an issue where syntax-error couldn't be raised on files with
  invalid encodings.

  Closes #7522

• Fix false positive for redefined-outer-name when aliasing typing
  e.g. as t and guarding imports under t.TYPE_CHECKING.

  Closes #7524

• Fixed a crash of the modified_iterating checker when iterating on a set
  defined as a class attribute.

  Closes #7528

• Fix bug in scanning of names inside arguments to typing.Literal.
  See https://peps.python.org/pep-0586/#literals-enums-and-forward-references
  for details.

  Refs #3299

Other Changes

• Add method name to the error messages of no-method-argument and
  no-self-argument.

  Closes #7507

v2.15.3

• Fixed a crash in the unhashable-member checker when using a lambda as a dict key.

  Closes #7453

• Fix a crash in the modified-iterating-dict checker involving instance attributes.

  Closes #7461

• invalid-class-object does not crash anymore when __class__ is assigned alongside another variable.

  Closes #7467

• Fix false positive for global-variable-not-assigned when a global variable is re-assigned via an ImportFrom node.

  Closes #4809

• Fix false positive for undefined-loop-variable in for-else loops that use a function
  having a return type annotation of NoReturn or Never.

  Closes #7311

• --help-msg now accepts a comma-separated list of message IDs again.

  Closes #7471