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ChangeLog
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------------------
Pylint's ChangeLog
------------------
What's New in Pylint 2.12.0?
============================
Release date: TBA
..
Put new features here and also in 'doc/whatsnew/2.12.rst'
* Upgrade astroid to 2.9.0
Closes #4982
* Add ability to add ``end_line`` and ``end_column`` to the ``--msg-template`` option.
With the standard ``TextReporter`` this will add the line and column number of the
end of a node to the output of Pylint. If these numbers are unknown, they are represented
by an empty string.
* Introduced primer tests and a configuration tests framework. The helper classes available in
``pylint/testutil/`` are still unstable and might be modified in the near future.
Closes #4412 #5287
* Fix ``install graphiz`` message which isn't needed for puml output format.
* ``MessageTest`` of the unittest ``testutil`` now requires the ``confidence`` attribute
to match the expected value. If none is provided it is set to ``UNDEFINED``.
* ``add_message`` of the unittest ``testutil`` now actually handles the ``col_offset`` parameter
and allows it to be checked against actual output in a test.
* Fix a crash in the ``check_elif`` extensions where an undetected if in a comprehension
with an if statement within a f-string resulted in an out of range error. The checker no
longer relies on counting if statements anymore and uses known if statements locations instead.
It should not crash on badly parsed if statements anymore.
* Fix ``simplify-boolean-expression`` when condition can be inferred as False.
Closes #5200
* Fix exception when pyreverse parses ``property function`` of a class.
* The functional ``testutils`` now accept ``end_lineno`` and ``end_column``. Expected
output files without these will trigger a ``DeprecationWarning``. Expected output files
can be easily updated with the ``python tests/test_functional.py --update-functional-output`` command.
* The functional ``testutils`` now correctly check the distinction betweeen ``HIGH`` and
``UNDEFINED`` confidence. Expected output files without defiend ``confidence`` levels will now
trigger a ``DeprecationWarning``. Expected output files can be easily updated with the
``python tests/test_functional.py --update-functional-output`` command.
* Fix ``accept-no-yields-doc`` and ``accept-no-return-doc`` not allowing missing ``yield`` or
``return`` documentation when a docstring is partially correct
Closes #5223
* Add an optional extension ``consider-using-any-or-all`` : Emitted when a ``for`` loop only
produces a boolean and could be replaced by ``any`` or ``all`` using a generator. Also suggests
a suitable any or all statement.
Closes #5008
* Properly identify parameters with no documentation and add new message called ``missing-any-param-doc``
Closes #3799
* Add checkers ``overridden-final-method`` & ``subclassed-final-class``
Closes #3197
* Fixed ``protected-access`` for accessing of attributes and methods of inner classes
Closes #3066
* Added support for ``ModuleNotFoundError`` (``import-error`` and ``no-name-in-module``).
``ModuleNotFoundError`` inherits from ``ImportError`` and was added in Python ``3.6``
* ``undefined-variable`` now correctly flags variables which only receive a type annotations
and never get assigned a value
Closes #5140
* ``undefined-variable`` now correctly considers the line numbering and order of classes
used in metaclass declarations
Closes #4031
* ``used-before-assignment`` now correctly considers references to classes as type annotation
or default values in first-level methods
Closes #3771
* ``undefined-variable`` and ``unused-variable`` now correctly trigger for assignment expressions
in functions defaults
Fixes part of #3688
* ``undefined-variable`` now correctly triggers for assignment expressions in if ... else statements
This includes a basic form of control flow inference for if ... else statements using
constant boolean values
Closes #3688
* Added the ``--enable-all-extensions`` command line option. It will load all available extensions
which can be listed by running ``--list-extensions``
* Fix bug with importing namespace packages with relative imports
Closes #2967 and #5131
* Improve and flatten ``unused-wildcard-import`` message
Closes #3859
* In length checker, ``len-as-condition`` has been renamed as
``use-implicit-booleaness-not-len`` in order to be consistent with
``use-implicit-booleaness-not-comparison``.
* Created new ``UnsupportedVersionChecker`` checker class that includes checks for features
not supported by all versions indicated by a ``py-version``.
* Added ``using-f-string-in-unsupported-version`` checker. Issued when ``py-version``
is set to a version that does not support f-strings (< 3.6)
* Fix ``useless-super-delegation`` false positive when default keyword argument is a variable.
* Properly emit ``duplicate-key`` when Enum members are duplicate dictionary keys
Closes #5150
* Use ``py-version`` setting for alternative union syntax check (PEP 604),
instead of the Python interpreter version.
* Subclasses of ``dict`` are regarded as reversible by the ``bad-reversed-sequence`` checker
(Python 3.8 onwards).
Closes #4981
* Support configuring mixin class pattern via ``mixin-class-rgx``
* Added new checker ``use-implicit-booleaness-not-comparison``: Emitted when
collection literal comparison is being used to check for emptiness.
Closes #4774
* ``mising-param-doc`` now correctly parses asterisks for variable length and
keyword parameters
Closes #3733
* ``mising-param-doc`` now correctly handles Numpy parameter documentation without
explicit typing
Closes #5222
* ``pylint`` no longer crashes when checking assignment expressions within if-statements
Closes #5178
* Update ``literal-comparison``` checker to ignore tuple literals
Closes #3031
* Normalize the input to the ``ignore-paths`` option to allow both Posix and
Windows paths
Closes #5194
* Fix double emitting of ``not-callable`` on inferrable ``properties``
Closes #4426
* ``self-cls-assignment`` now also considers tuple assignment
* Fix ``missing-function-docstring`` not being able to check ``__init__`` and other
magic methods even if the ``no-docstring-rgx`` setting was set to do so
* Added ``using-final-decorator-in-unsupported-version`` checker. Issued when ``py-version``
is set to a version that does not support ``typing.final`` (< 3.8)
* Added configuration option ``exclude-too-few-public-methods`` to allow excluding
classes from the ``min-public-methods`` checker.
Closes #3370
* The ``--jobs`` parameter now fallbacks to 1 if the host operating system does not
have functioning shared semaphore implementation.
Closes #5216
* Fix crash for ``unused-private-member`` when checking private members on ``__class__``
Closes #5261
* Crashes when a list is encountered in a toml configuration do not happen anymore.
Closes #4580
* Moved ``misplaced-comparison-constant`` to its own extension ``comparison_placement``.
This checker was opinionated and now no longer a default. It can be reactived by adding
``pylint.extensions.comparison_placement`` to ``load-plugins`` in your config.
Closes #1064
* A new ``bad-configuration-section`` checker was added that will emit for misplaced option
in pylint's top level namespace for toml configuration. Top-level dictionaries or option defined
in the wrong section will still silently not be taken into account, which is tracked in a
follow-up issue.
Follow-up in #5259
* Fix crash for ``protected-access`` on (outer) class traversal
* Added new checker ``useless-with-lock`` to find incorrect usage of with statement and threading module locks.
Emitted when ``with threading.Lock():`` is used instead of ``with lock_instance:``.
Closes #5208
* Make yn validator case insensitive, to allow for ``True`` and ``False`` in config files.
* Fix crash on ``open()`` calls when the ``mode`` argument is not a simple string.
Partially closes #5321
* Inheriting from a class that implements ``__class_getitem__`` no longer raises ``inherit-non-class``.
What's New in Pylint 2.11.2?
============================
Release date: TBA
..
Put bug fixes that should not wait for a new minor version here
* Pyreverse - Add the project root directory to sys.path
Closes #2479
* Don't emit ``consider-using-f-string`` if ``py-version`` is set to Python < ``3.6``.
``f-strings`` were added in Python ``3.6``
Closes #5019
* Fix regression for ``unspecified-encoding`` with ``pathlib.Path.read_text()``
Closes #5029
* Don't emit ``consider-using-f-string`` if the variables to be interpolated include a backslash
* Fixed false positive for ``cell-var-from-loop`` when variable is used as the default
value for a keyword-only parameter.
Closes #5012
* Fix false-positive ``undefined-variable`` with ``Lambda``, ``IfExp``, and
assignment expression.
* Fix false-positive ``useless-suppression`` for ``wrong-import-order``
Closes #2366
* Fixed ``toml`` dependency issue
Closes #5066
* Fix false-positive ``useless-suppression`` for ``line-too-long``
Closes #4212
* Fixed ``invalid-name`` not checking parameters of overwritten base ``object`` methods
Closes #3614
* Fixed crash in ``consider-using-f-string`` if ``format`` is not called
Closes #5058
* Fix crash with ``AssignAttr`` in ``if TYPE_CHECKING`` blocks.
Closes #5111
* Improve node information for ``invalid-name`` on function argument.
* Prevent return type checkers being called on functions with ellipses as body
Closes #4736
* Add ``is_sys_guard`` and ``is_typing_guard`` helper functions from astroid
to ``pylint.checkers.utils``.
* Fix regression on ClassDef inference
Closes #5030
Closes #5036
* Fix regression on Compare node inference
Closes #5048
* Fix false-positive ``isinstance-second-argument-not-valid-type`` with ``typing.Callable``.
Closes #3507
Closes #5087
* It is now recommended to do ``pylint`` development on ``Python`` 3.8 or higher. This
allows using the latest ``ast`` parser.
* All standard jobs in the ``pylint`` CI now run on ``Python`` 3.8 by default. We still
support python 3.6 and 3.7 and run tests for those interpreters.
* ``TypingChecker``
* Fix false-negative for ``deprecated-typing-alias`` and ``consider-using-alias``
with ``typing.Type`` + ``typing.Callable``.
What's New in Pylint 2.11.1?
============================
Release date: 2021-09-16
* ``unspecified-encoding`` now checks the encoding of ``pathlib.Path()`` correctly
Closes #5017
What's New in Pylint 2.11.0?
============================
Release date: 2021-09-16
* The python3 porting mode checker and it's ``py3k`` option were removed. You can still find it in older pylint
versions.
* ``raising-bad-type`` is now properly emitted when raising a string
* Added new extension ``SetMembershipChecker`` with ``use-set-for-membership`` check:
Emitted when using an in-place defined ``list`` or ``tuple`` to do a membership test. ``sets`` are better optimized for that.
Closes #4776
* Added ``py-version`` config key (if ``[MASTER]`` section). Used for version dependant checks.
Will default to whatever Python version pylint is executed with.
* ``CodeStyleChecker``
* Added ``consider-using-assignment-expr``: Emitted when an assignment is directly followed by an if statement
and both can be combined by using an assignment expression ``:=``. Requires Python 3.8
Closes #4862
* Added ``consider-using-f-string``: Emitted when .format() or '%' is being used to format a string.
Closes #3592
* Fix false positive for ``consider-using-with`` if a context manager is assigned to a
variable in different paths of control flow (e. g. if-else clause).
Closes #4751
* https is now prefered in the documentation and http://pylint.pycqa.org correctly redirect to https://pylint.pycqa.org
Closes #3802
* Fix false positive for ``function-redefined`` for simple type annotations
Closes #4936
* Fix false positive for ``protected-access`` if a protected member is used in type hints of function definitions
* Fix false positive ``dict-iter-missing-items`` for dictionaries only using tuples as keys
Closes #3282
* The ``unspecified-encoding`` checker now also checks calls to ``pathlib.Path().read_text()``
and ``pathlib.Path().write_text()``
Closes #4945
* Fix false positive ``superfluous-parens`` for tuples created with inner tuples
Closes #4907
* Fix false positive ``unused-private-member`` for accessing attributes in a class using ``cls``
Closes #4849
* Fix false positive ``unused-private-member`` for private staticmethods accessed in classmethods.
Closes #4849
* Extended ``consider-using-in`` check to work for attribute access.
* Setting ``min-similarity-lines`` to 0 now makes the similarty checker stop checking for duplicate code
Closes #4901
* Fix a bug where pylint complained if the cache's parent directory does not exist
Closes #4900
* The ``global-variable-not-assigned`` checker now catches global variables that are never reassigned in a
local scope and catches (reassigned) functions
Closes #1375
Closes #330
* Fix false positives for invalid-all-format that are lists or tuples at runtime
Closes #4711
* Fix ``no-self-use`` and ``docparams extension`` for async functions and methods.
* Add documentation for ``pyreverse`` and ``symilar``
Closes #4616
* Non symbolic messages with the wrong capitalisation now correctly trigger ``use-symbolic-message-instead``
Closes #5000
* The ``consider-iterating-dictionary`` checker now also considers membership checks
Closes #4069
* The ``invalid-name`` message is now more detailed when using multiple naming style regexes.
What's New in Pylint 2.10.2?
============================
Release date: 2021-08-21
* We now use platformdirs instead of appdirs since the latter is not maintained.
Closes #4886
* Fix a crash in the checker raising ``shallow-copy-environ`` when failing to infer
on ``copy.copy``
Closes #4891
What's New in Pylint 2.10.1?
============================
Release date: 2021-08-20
* pylint does not crash when PYLINT_HOME does not exist.
Closes #4883
What's New in Pylint 2.10.0?
============================
Release date: 2021-08-20
* pyreverse: add option to produce colored output.
Closes #4488
* pyreverse: add output in PlantUML format.
Closes #4498
* ``consider-using-with`` is no longer triggered if a context manager is returned from a function.
Closes #4748
* pylint does not crash with a traceback anymore when a file is problematic. It
creates a template text file for opening an issue on the bug tracker instead.
The linting can go on for other non problematic files instead of being impossible.
* pyreverse: Show class has-a relationships inferred from the type-hint
Closes #4744
* Fixed a crash when importing beyond the top level package during ``import-error``
message creation
Closes #4775
* Added ``ignored-parents`` option to the design checker to ignore specific
classes from the ``too-many-ancestors`` check (R0901).
Partially closes #3057
* Added ``unspecified-encoding``: Emitted when open() is called without specifying an encoding
Closes #3826
* Improved the Similarity checker performance. Fix issue with ``--min-similarity-lines`` used with ``--jobs``.
Close #4120
Close #4118
* Don't emit ``no-member`` error if guarded behind if statement.
Ref #1162
Closes #1990
Closes #4168
* The default for ``PYLINTHOME`` is now the standard ``XDG_CACHE_HOME``, and pylint now uses ``appdirs``.
Closes #3878
* Added ``use-list-literal``: Emitted when ``list()`` is called with no arguments instead of using ``[]``
Closes #4365
* Added ``use-dict-literal``: Emitted when ``dict()`` is called with no arguments instead of using ``{}``
Closes #4365
* Added optional extension ``consider-ternary-expression``: Emitted whenever a variable is assigned in both branches of an if/else block.
Closes # 4366
* Added optional extension ``while-used``: Emitted whenever a ``while`` loop is used.
Closes # 4367
* Added ``forgotten-debug-statement``: Emitted when ``breakpoint``, ``pdb.set_trace`` or ``sys.breakpointhook`` calls are found
Closes #3692
* Fix false-positive of ``unused-private-member`` when using nested functions in a class
Closes #4673
* Fix crash for ``unused-private-member`` that occurred with nested attributes.
Closes #4755
* Fix a false positive for ``unused-private-member`` with class names
Closes #4681
* Fix false positives for ``superfluous-parens`` with walrus operator, ternary operator and inside list comprehension.
Closes #2818
Closes #3249
Closes #3608
Closes #4346
* Added ``format-string-without-interpolation`` checker: Emitted when formatting is applied to a string without any variables to be replaced
Closes #4042
* Refactor of ``--list-msgs`` & ``--list-msgs-enabled``: both options now show whether messages are emittable with the current interpreter.
Closes #4778
* Fix false negative for ``used-before-assignment`` when the variable is assigned
in an exception handler, but used outside of the handler.
Closes #626
* Added ``disable-next`` option: allows using `# pylint: disable-next=msgid` to disable a message for the following line
Closes #1682
* Added ``redundant-u-string-prefix`` checker: Emitted when the u prefix is added to a string
Closes #4102
* Fixed ``cell-var-from-loop`` checker: handle cell variables in comprehensions within functions,
and function default argument expressions. Also handle basic variable shadowing.
Closes #2846
Closes #3107
* Fixed bug with ``cell-var-from-loop`` checker: it no longer has false negatives when
both ``unused-variable`` and ``used-before-assignment`` are disabled.
* Fix false postive for ``invalid-all-format`` if the list or tuple builtin functions are used
Closes #4711
* Config files can now contain environment variables
Closes #3839
* Fix false-positive ``used-before-assignment`` with an assignment expression in a ``Return`` node
Closes #4828
* Added ``use-sequence-for-iteration``: Emitted when iterating over an in-place defined ``set``.
* ``CodeStyleChecker``
* Limit ``consider-using-tuple`` to be emitted only for in-place defined ``lists``.
* Emit ``consider-using-tuple`` even if list contains a ``starred`` expression.
* Ignore decorators lines by similarities checker when ignore signatures flag enabled
Closes #4839
* Allow ``true`` and ``false`` values in ``pylintrc`` for better compatibility with ``toml`` config.
* Class methods' signatures are ignored the same way as functions' with similarities "ignore-signatures" option enabled
Closes #4653
* Improve performance when inferring ``Call`` nodes, by utilizing caching.
* Improve error message for invalid-metaclass when the node is an Instance.
What's New in Pylint 2.9.6?
===========================
Release date: 2021-07-28
* Fix a false positive ``undefined-variable`` when variable name in decoration
matches function argument
Closes #3791
What's New in Pylint 2.9.5?
===========================
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 #4439
* Fix crash if a callable returning a context manager was assigned to a list or dict item
Closes #4732
* Fix a crash when an AttributeInferenceError was not handled properly when
failing to infer the real name of an import in astroid.
Closes #4692
What's New in Pylint 2.9.4?
===========================
Release date: 2021-07-20
* Added ``time.clock`` to deprecated functions/methods for python 3.3
* Fix bug in which --fail-on can return a zero exit code even when the specified issue is present
Closes #4296
Closes #3363
* Fix hard failure when handling missing attribute in a class with duplicated bases
Closes #4687
* Fix false-positive ``consider-using-with`` (R1732) if a ternary conditional is used together with ``with``
Closes #4676
* Fix false-positive ``deprecated-module`` when relative import uses deprecated module name.
Closes #4629
* Fix false-positive ``consider-using-with`` (R1732) if ``contextlib.ExitStack`` takes care of calling the ``__exit__`` method
Closes #4654
* Fix a false positive for ``unused-private-member`` when mutating a private attribute
with ``cls``
Closes #4657
* Fix ignored empty functions by similarities checker with "ignore-signatures" option enabled
Closes #4652
* Fix false-positive of ``use-maxsplit-arg`` when index is incremented in
a loop
Closes #4664
* Don't emit ``cyclic-import`` message if import is guarded by ``typing.TYPE_CHECKING``.
Closes #3525
* Fix false-positive ``not-callable`` with alternative ``TypedDict`` syntax
Closes #4715
* Clarify documentation for consider-using-from-import
* Don't emit ``unreachable`` warning for empty generator functions
Closes #4698
* Don't emit ``import-error``, ``no-name-in-module``, and ``ungrouped-imports``
for imports guarded by ``sys.version_info`` or ``typing.TYPE_CHECKING``.
Closes #3285
Closes #3382
* Fix ``invalid-overridden-method`` with nested property
Closes #4368
* Fix false-positive of ``unused-private-member`` when using ``__new__`` in a class
Closes #4668
* No longer emit ``consider-using-with`` for ``ThreadPoolExecutor`` and ``ProcessPoolExecutor``
as they have legitimate use cases without a ``with`` block.
Closes #4689
* Fix crash when inferring variables assigned in match patterns
Closes #4685
* Fix a crash when a StopIteration was raised when inferring
a faulty function in a context manager.
Closes #4723
What's New in Pylint 2.9.3?
===========================
Release date: 2021-07-01
* Fix a crash that happened when analysing empty function with docstring
in the ``similarity`` checker.
Closes #4648
* The ``similarity`` checker no longer add three trailing whitespaces for
empty lines in its report.
What's New in Pylint 2.9.2?
===========================
Release date: 2021-07-01
* Fix a crash that happened when analysing code using ``type(self)`` to access
a class attribute in the ``unused-private-member`` checker.
Closes #4638
* Fix a false positive for ``unused-private-member`` when accessing a private variable
with ``self``
Closes #4644
* Fix false-positive of ``unnecessary-dict-index-lookup`` and ``consider-using-dict-items``
for reassigned dict index lookups
Closes #4630
What's New in Pylint 2.9.1?
===========================
Release date: 2021-06-30
* Upgrade astroid to 2.6.2
Closes #4631
Closes #4633
What's New in Pylint 2.9.0?
===========================
Release date: 2021-06-29
* Python 3.10 is now supported.
* Add type annotations to pyreverse dot files
Closes #1548
* Fix missing support for detecting deprecated aliases to existing
functions/methods.
Closes #4618
* astroid has been upgraded to 2.6.1
* Added various deprecated functions/methods for python 3.10, 3.7, 3.6 and 3.3
* Fix false positive ``useless-type-doc`` on ignored argument using ``pylint.extensions.docparams``
when a function was typed using pep484 but not inside the docstring.
Closes #4117
Closes #4593
* ``setuptools_scm`` has been removed and replaced by ``tbump`` in order to not
have hidden runtime dependencies to setuptools
* Fix a crash when a test function is decorated with ``@pytest.fixture`` and astroid can't
infer the name of the decorator when using ``open`` without ``with``.
Closes #4612
* Added ``deprecated-decorator``: Emitted when deprecated decorator is used.
Closes #4429
* Added ``ignore-paths`` behaviour. Defined regex patterns are matched against full file path.
Close #2541
* Fix false negative for ``consider-using-with`` if calls like ``open()`` were used outside of assignment expressions.
* The warning for ``arguments-differ`` now signals explicitly the difference it detected
by naming the argument or arguments that changed and the type of change that occurred.
* Suppress ``consider-using-with`` inside context managers.
Closes #4430
* Added ``--fail-on`` option to return non-zero exit codes regardless of ``--fail-under`` value.
* numversion tuple contains integers again to fix multiple pylint's plugins that relied on it
Closes #4420
* Fix false-positive ``too-many-ancestors`` when inheriting from builtin classes,
especially from the ``collections.abc`` module
Closes #4166
Closes #4415
* Stdlib deprecated modules check is moved to stdlib checker. New deprecated
modules are added.
* Fix raising false-positive ``no-member`` on abstract properties
* Created new error message called ``arguments-renamed`` which identifies any changes at the parameter
names of overridden functions.
Closes #3536
* New checker ``consider-using-dict-items``. Emitted when iterating over dictionary keys and then
indexing the same dictionary with the key within loop body.
Closes #3389
* Don't emit ``import-error`` if import guarded behind ``if sys.version_info >= (x, x)``
* Fix incompatibility with Python 3.6.0 caused by ``typing.Counter`` and ``typing.NoReturn`` usage
Closes #4412
* New checker ``use-maxsplit-arg``. Emitted either when accessing only the first or last
element of ``str.split()``.
Closes #4440
* Add ignore_signatures to duplicate code checker
Closes #3619
* Fix documentation errors in "Block disables" paragraph of User Guide.
* New checker ``unnecessary-dict-index-lookup``. Emitted when iterating over dictionary items
(key-value pairs) and accessing the value by index lookup.
Closes #4470
* New checker``consider-using-from-import``. Emitted when a submodule/member of a package is imported and aliased
with the same name.
Closes #2309
* Allow comma-separated list in ``output-format`` and separate output files for
each specified format.
Closes #1798
* Make ``using-constant-test`` detect constant tests consisting of list literals like ``[]`` and
``[1, 2, 3]``.
* Improved error message of ``unnecessary-comprehension`` checker by providing code suggestion.
Closes #4499
* New checker ``unused-private-member``. Emitted when a private member (i.e., starts with ``__``) of a class
is defined but not used.
Closes #4483
* Fix false negative of ``consider-using-enumerate`` when iterating over an attribute.
Closes #3657
* New checker ``invalid-class-object``. Emitted when a non-class is assigned to a ``__class__`` attribute.
Closes #585
* Fix a crash when a plugin from the configuration could not be loaded and raise an error
'bad-plugin-value' instead
Closes #4555
* Added handling of floating point values when parsing configuration from pyproject.toml
Closes #4518
* ``invalid-length-returned``, now also works when nothing at all is returned
following an upgrade in astroid.
* ``logging-format-interpolation`` and ``logging-not-lazy``, now works on logger
class created from renamed logging import following an upgrade in astroid.
* Fix false-positive ``no-member`` with generic base class
Closes PyCQA/astroid#942
* Fix ``assigning-non-slot`` false-positive with base that inherits from ``typing.Generic``
Closes #4509
Closes PyCQA/astroid#999
* New checker ``invalid-all-format``. Emitted when ``__all__`` has an invalid format,
i.e. isn't a ``tuple`` or ``list``.
* Fix false positive ``unused-variable`` and ``undefined-variable`` with
Pattern Matching in Python 3.10
* New checker ``await-outside-async``. Emitted when await is used outside an async function.
* Clarify documentation for ``typing`` extension.
Closes #4545
* Add new extension ``CodeStyleChecker``. It includes checkers that can improve code
consistency. As such they don't necessarily provide a performance benefit
and are often times opinionated.
* New checker ``consider-using-tuple``. Emitted when an in-place defined
list or set can be replaced by a tuple.
* New checker ``consider-using-namedtuple-or-dataclass``. Emitted when dictionary values
can be replaced by namedtuples or dataclass instances.
* Fix error that occurred when using ``slice`` as subscript for dict.
* Reduce false-positives around inference of ``.value`` and ``.name``
properties on ``Enum`` subclasses, following an upgrade in astroid
Closes #1932
Closes #2062
* Fix issue with ``cached_property`` that caused ``invalid-overridden-method`` error
when overriding a ``property``.
Closes #4023
* Fix ``unused-import`` false positive for imported modules referenced in
attribute lookups in type comments.
Closes #4603
What's New in Pylint 2.8.3?
===========================
Release date: 2021-05-31
* Astroid has been pinned to 2.5.6 for the 2.8 branch see #4527.
What's New in Pylint 2.8.2?
===========================
Release date: 2021-04-26
* Keep ``__pkginfo__.numversion`` a tuple to avoid breaking pylint-django.
Closes #4405
* scm_setuptools has been added to the packaging.
* Pylint's tags are now the standard form ``vX.Y.Z`` and not ``pylint-X.Y.Z`` anymore.
* New warning message ``deprecated-class``. This message is emitted if import or call deprecated class of the
standard library (like ``collections.Iterable`` that will be removed in Python 3.10).
Closes #4388
What's New in Pylint 2.8.1?
===========================
Release date: 2021-04-25
* Add numversion back (temporarily) in ``__pkginfo__`` because it broke Pylama and revert the unnecessary
``pylint.version`` breaking change.
Closes #4399
What's New in Pylint 2.8.0?
===========================
Release date: 2021-04-24