Update dependency pylint to v3 #262

renovate · 2024-03-12T23:42:45Z

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pylint (changelog)	`>=2.2.0,<=2.5.3` -> `>=3.3.1,<=3.3.1`

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Release Notes

pylint-dev/pylint (pylint)

`v3.3.1`

Compare Source

What's new in Pylint 3.3.1?

Release date: 2024-09-24

False Positives Fixed

Fix regression causing some f-strings to not be inferred as strings.

Closes #9947

`v3.3.0`

Compare Source

Release date: 2024-09-20

Changes requiring user actions

We migrated symilar to argparse, from getopt, so the error and help output changed
(for the better). We exit with 2 instead of sometime 1, sometime 2. The error output
is not captured by the runner anymore. It's not possible to use a value for the
boolean options anymore (--ignore-comments 1 should become --ignore-comments).

Refs #9731

New Features

Add new declare-non-slot error which reports when a class has a __slots__ member and a type hint on the class is not present in __slots__.

Refs #9499

New Checks

Added too-many-positional-arguments to allow distinguishing the configuration for too many
total arguments (with keyword-only params specified after *) from the configuration
for too many positional-or-keyword or positional-only arguments.

As part of evaluating whether this check makes sense for your project, ensure you
adjust the value of --max-positional-arguments.

Closes #9099
Add using-exception-groups-in-unsupported-version and
using-generic-type-syntax-in-unsupported-version for uses of Python 3.11+ or
3.12+ features on lower supported versions provided with --py-version.

Closes #9791
Add using-assignment-expression-in-unsupported-version for uses of := (walrus operator)
on Python versions below 3.8 provided with --py-version.

Closes #9820
Add using-positional-only-args-in-unsupported-version for uses of positional-only args on
Python versions below 3.8 provided with --py-version.

Closes #9823
Add unnecessary-default-type-args to the typing extension to detect the use
of unnecessary default type args for typing.Generator and typing.AsyncGenerator.

Refs #9938

False Negatives Fixed

Fix computation of never-returning function: Never is handled in addition to NoReturn, and priority is given to the explicit --never-returning-functions option.

Closes #7565.
Fix a false negative for await-outside-async when await is inside Lambda.

Refs #9653
Fix a false negative for duplicate-argument-name by including positional-only, *args and **kwargs arguments in the check.

Closes #9669
Fix false negative for multiple-statements when multiple statements are present on else and finally lines of try.

Refs #9759
Fix false negatives when isinstance does not have exactly two arguments.
pylint now emits a too-many-function-args or no-value-for-parameter
appropriately for isinstance calls.

Closes #9847

Other Bug Fixes

--enable with --disable=all now produces an error, when an unknown msg code is used. Internal pylint messages are no longer affected by --disable=all.

Closes #9403
Impossible to compile regexes for paths in the configuration or argument given to pylint won't crash anymore but
raise an argparse error and display the error message from re.compile instead.

Closes #9680
Fix a bug where a tox.ini file with pylint configuration was ignored and it exists in the current directory.

.cfg and .ini files containing a Pylint configuration may now use a section named [pylint]. This enhancement impacts the scenario where these file types are used as defaults when they are present and have not been explicitly referred to, using the --rcfile option.

Closes #9727
Improve file discovery for directories that are not python packages.

Closes #9764

Other Changes

Remove support for launching pylint with Python 3.8.
Code that supports Python 3.8 can still be linted with the --py-version=3.8 setting.

Refs #9774
Add support for Python 3.13.

Refs #9852

Internal Changes

All variables, classes, functions and file names containing the word 'similar', when it was,
in fact, referring to 'symilar' (the standalone program for the duplicate-code check) were renamed
to 'symilar'.

Closes #9734
Remove old-style classes (Python 2) code and remove check for new-style class since everything is new-style in Python 3. Updated doc for exception checker to remove reference to new style class.

Refs #9925

`v3.2.7`

Compare Source

What's new in Pylint 3.2.7?

Release date: 2024-08-31

False Positives Fixed

Fixed a false positive unreachable for NoReturn coroutine functions.

Closes #9840

Other Bug Fixes

Fix crash in refactoring checker when calling a lambda bound as a method.

Closes #9865
Fix a crash in undefined-loop-variable when providing the iterable argument to enumerate().

Closes #9875
Fix to address indeterminacy of error message in case a module name is same as another in a separate namespace.

Refs #9883

`v3.2.6`

Compare Source

What's new in Pylint 3.2.6?

Release date: 2024-07-21

False Positives Fixed

Quiet false positives for unexpected-keyword-arg when pylint cannot
determine which of two or more dynamically defined classes is being instantiated.

Closes #9672
Fix a false positive for missing-param-doc where a method which is decorated with typing.overload was expected to have a docstring specifying its parameters.

Closes #9739
Fix a regression that raised invalid-name on class attributes merely
overriding invalid names from an ancestor.

Closes #9765
Treat assert_never() the same way when imported from typing_extensions.

Closes #9780
Fix a false positive for consider-using-min-max-builtin when the assignment target is an attribute.

Refs #9800

Other Bug Fixes

Fix an AssertionError arising from properties that return partial functions.

Closes #9214
Fix a crash when a subclass extends __slots__.

Closes #9814

`v3.2.5`

Compare Source

What's new in Pylint 3.2.5 ?

Release date: 2024-06-28

Other Bug Fixes

Fixed a false positive unreachable-code when using typing.Any as return type in python
3.8, the typing.NoReturn are not taken into account anymore for python 3.8 however.

Closes #9751

`v3.2.4`

Compare Source

What's new in Pylint 3.2.4?

Release date: 2024-06-26

False Positives Fixed

Prevent emitting possibly-used-before-assignment when relying on names
only potentially not defined in conditional blocks guarded by functions
annotated with typing.Never or typing.NoReturn.

Closes #9674

Other Bug Fixes

Fixed a crash when the lineno of a variable used as an annotation wasn't available for undefined-variable.

Closes #8866
Fixed a crash when the start value in an enumerate was non-constant and impossible to infer
(like inenumerate(apples, start=int(random_apple_index)) for unnecessary-list-index-lookup.

Closes #9078
Fixed a crash in symilar when the -d or -i short option were not properly recognized.
It's still impossible to do -d=1 (you must do -d 1).

Closes #9343

`v3.2.3`

Compare Source

False Positives Fixed

Classes with only an Ellipsis (...) in their body do not trigger 'multiple-statements'
anymore if they are inlined (in accordance with black's 2024 style).

Closes #9398
Fix a false positive for redefined-outer-name when there is a name defined in an exception-handling block which shares the same name as a local variable that has been defined in a function body.

Closes #9671
Fix a false positive for use-yield-from when using the return value from the yield atom.

Closes #9696

`v3.2.2`

Compare Source

What's new in Pylint 3.2.2?

Release date: 2024-05-20

False Positives Fixed

Fix multiple false positives for generic class syntax added in Python 3.12 (PEP 695).

Closes #9406
Exclude context manager without cleanup from
contextmanager-generator-missing-cleanup checks.

Closes #9625

`v3.2.1`

Compare Source

What's new in Pylint 3.2.1?

Release date: 2024-05-18

False Positives Fixed

Exclude if/else branches containing terminating functions (e.g. sys.exit())
from possibly-used-before-assignment checks.

Closes #9627
Don't emit typevar-name-incorrect-variance warnings for PEP 695 style TypeVars.
The variance is inferred automatically by the type checker.
Adding _co or _contra suffix can help to reason about TypeVar.

Refs #9638
Fix a false positive for possibly-used-before-assignment when using
typing.assert_never() (3.11+) to indicate exhaustiveness.

Closes #9643

Other Bug Fixes

Fix a false negative for --ignore-patterns when the directory to be linted is specified using a dot(.) and all files are ignored instead of only the files whose name begin with a dot.

Closes #9273
Restore "errors / warnings by module" section to report output (with -ry).

Closes #9145
trailing-comma-tuple should now be correctly emitted when it was disabled globally
but enabled via local message control, after removal of an over-optimisation.

Refs #9608
Add --prefer-stubs=yes option to opt-in to the astroid 3.2 feature
that prefers .pyi stubs over same-named .py files. This has the
potential to reduce no-member errors but at the cost of more errors
such as not-an-iterable from function bodies appearing as ....

Defaults to no.

Closes #9626
Closes #9623

Internal Changes

Update astroid version to 3.2.1. This solves some reports of RecursionError
and also makes the prefer .pyi stubs feature in astroid 3.2.0 opt-in
with the aforementioned --prefer-stubs=y option.

Refs #9139

`v3.2.0`

Compare Source

What's new in Pylint 3.2.0?

Release date: 2024-05-14

Of note: a github reporter, two new checks (possibly-used-before-assignment and contextmanager-generator-missing-cleanup), performance improvements, and an astroid upgrade providing support for @overload and .pyi stubs.

New Features

Understand six.PY2 and six.PY3 for conditional imports.

Closes #3501
A new github reporter has been added. This reporter returns the output of pylint in a format that
Github can use to automatically annotate code. Use it with pylint --output-format=github on your Github Workflows.

Closes #9443.

New Checks

Add check possibly-used-before-assignment when relying on names after an if/else
switch when one branch failed to define the name, raise, or return.

Closes #1727
Checks for generators that use contextmanagers that don't handle cleanup properly.
Is meant to raise visibilty on the case that a generator is not fully exhausted and the contextmanager is not cleaned up properly.
A contextmanager must yield a non-constant value and not handle cleanup for GeneratorExit.
The using generator must attempt to use the yielded context value with x() as y and not just with x().

Closes #2832

False Negatives Fixed

If and Try nodes are now checked for useless return statements as well.

Closes #9449.
Fix false negative for property-with-parameters in the case of parameters which are positional-only, keyword-only, variadic positional or variadic keyword.

Closes #9584

False Positives Fixed

pylint now understands the @overload decorator return values better.

Closes #4696
Refs #9606

Performance Improvements

Ignored modules are now not checked at all, instead of being checked and then
ignored. This should speed up the analysis of large codebases which have
ignored modules.

Closes #9442
ImportChecker's logic has been modified to avoid context files when possible. This makes it possible
to cache module searches on astroid and reduce execution times.

Refs #9310.
An internal check for trailing-comma-tuple being enabled for a file or not is now
done once per file instead of once for each token.

Refs #9608.

`v3.1.1`

Compare Source

What's new in Pylint 3.1.1?

Release date: 2024-05-13

False Positives Fixed

Treat attrs.define and attrs.frozen as dataclass decorators in
too-few-public-methods check.

Closes #9345
Fix a false positive with singledispatchmethod-function when a method is decorated with both functools.singledispatchmethod and staticmethod.

Closes #9531
Fix a false positive for consider-using-dict-items when iterating using keys() and then deleting an item using the key as a lookup.

Closes #9554

`v3.1.0`

Compare Source

Two new checks--use-yield-from, deprecated-attribute-- and a smattering of bug fixes.

New Features

Skip consider-using-join check for non-empty separators if an suggest-join-with-non-empty-separator option is set to no.

Closes #8701
Discover .pyi files when linting.

These can be ignored with the ignore-patterns setting.

Closes #9097
Check TypeAlias and TypeVar (PEP 695) nodes for invalid-name.

Refs #9196
Support for resolving external toml files named pylintrc.toml and .pylintrc.toml.

Closes #9228
Check for .clear, .discard, .pop and remove methods being called on a set while it is being iterated over.

Closes #9334

New Checks

New message use-yield-from added to the refactoring checker. This message is emitted when yielding from a loop can be replaced by yield from.

Closes #9229.
Added a deprecated-attribute message to check deprecated attributes in the stdlib.

Closes #8855

False Positives Fixed

Fixed false positive for inherit-non-class for generic Protocols.

Closes #9106
Exempt TypedDict from typing_extensions from too-many-ancestor checks.

Refs #9167

False Negatives Fixed

Extend broad-exception-raised and broad-exception-caught to except*.

Closes #8827
Fix a false-negative for unnecessary if blocks using a different than expected ordering of arguments.

Closes #8947.

Other Bug Fixes

Improve the message provided for wrong-import-order check. Instead of the import statement ("import x"), the message now specifies the import that is out of order and which imports should come after it. As reported in the issue, this is particularly helpful if there are multiple imports on a single line that do not follow the PEP8 convention.

The message will report imports as follows:
For "import X", it will report "(standard/third party/first party/local) import X"
For "import X.Y" and "from X import Y", it will report "(standard/third party/first party/local) import X.Y"
The import category is specified to provide explanation as to why pylint has issued the message and guidence to the developer on how to fix the problem.

Closes #8808

Other Changes

Print how many files were checked in verbose mode.

Closes #8935
Fix a crash when an enum class which is also decorated with a dataclasses.dataclass decorator is defined.

Closes #9100

Internal Changes

Update astroid version to 3.1.0.

Refs #9457

`v3.0.4`

Compare Source

False Positives Fixed

used-before-assignment is no longer emitted when using a name in a loop and
depending on an earlier name assignment in an except block paired with
else: continue.

Closes #6804
Avoid false positives for no-member involving function
attributes supplied by decorators.

Closes #9246
Fixed false positive nested-min-max for nested lists.

Closes #9307
Fix false positive for used-before-assignment in a finally block
when assignments took place in both the try block and each exception handler.

Closes #9451

Other Bug Fixes

Catch incorrect ValueError "generator already executing" for Python 3.12.0 - 3.12.2.
This is fixed upstream in Python 3.12.3.

Closes #9138

`v3.0.3`

Compare Source

What's new in Pylint 3.0.3?

Release date: 2023-12-11

False Positives Fixed

Fixed false positive for unnecessary-lambda when the call has keyword arguments but not the lambda.

Closes #9148
Fixed incorrect suggestion for shallow copy in unnecessary-comprehension

Example of the suggestion:
#pylint: disable=missing-module-docstring
a = [1, 2, 3]
b = [x for x in a]
b[0] = 0
print(a) # [1, 2, 3]

After changing b = [x for x in a] to b = a based on the suggestion, the script now prints [0, 2, 3]. The correct suggestion should be use list(a) to preserve the original behavior.

Closes #9172
Fix false positives for undefined-variable and unused-argument for
classes and functions using Python 3.12 generic type syntax.

Closes #9193
Fixed pointless-string-statement false positive for docstrings
on Python 3.12 type aliases.

Closes #9268
Fix false positive for invalid-exception-operation when concatenating tuples
of exception types.

Closes #9288

Other Bug Fixes

Fix a bug where pylint was unable to walk recursively through a directory if the
directory has an __init__.py file.

Closes #9210

`v3.0.2`

Compare Source

False Positives Fixed

Fix used-before-assignment false positive for generic type syntax (PEP 695, Python 3.12).

Closes #9110

Other Bug Fixes

Escape special symbols and newlines in messages.

Closes #7874
Fixes suggestion for nested-min-max for expressions with additive operators, list and dict comprehensions.

Closes #8524
Fixes ignoring conditional imports with ignore-imports=y.

Closes #8914
Emit inconsistent-quotes for f-strings with 3.12 interpreter only if targeting pre-3.12 versions.

Closes #9113

`v3.0.1`

False Positives Fixed

Fixed false positive for inherit-non-class for generic Protocols.

Closes #9106

Other Changes

Fix a crash when an enum class which is also decorated with a dataclasses.dataclass decorator is defined.

Closes #9100

`v3.0.0`

Pylint now support python 3.12 officially.

This long anticipated major version also provides some important usability and performance improvements, along with enacting necessary breaking changes and long-announced deprecations. The documentation of each message with an example is very close too.

The required astroid version is now 3.0.0. See the astroid changelog for additional fixes, features, and performance improvements applicable to pylint.

Our code is now fully typed. The invalid-name message no longer checks for a minimum length of 3 characters by default. Dependencies like wrapt or setuptools were removed.

A new json2 reporter has been added. It features an enriched output that is easier to parse and provides more info, here's a sample output.

{
    "messages": [
        {
            "type": "convention",
            "symbol": "line-too-long",
            "message": "Line too long (1/2)",
            "messageId": "C0301",
            "confidence": "HIGH",
            "module": "0123",
            "obj": "",
            "line": 1,
            "column": 0,
            "endLine": 1,
            "endColumn": 4,
            "path": "0123",
            "absolutePath": "0123"
        }
    ],
    "statistics": {
        "messageTypeCount": {
            "fatal": 0,
            "error": 0,
            "warning": 0,
            "refactor": 0,
            "convention": 1,
            "info": 0
        },
        "modulesLinted": 1,
        "score": 5.0
    }
}

Breaking Changes

Enabling or disabling individual messages will now take effect even if an
--enable=all or disable=all follows in the same configuration file
(or on the command line).

This means for the following example, fixme messages will now be emitted:
```
    pylint my_module --enable=fixme --disable=all
```
To regain the prior behavior, remove the superfluous earlier option.

Closes #3696
Remove support for launching pylint with Python 3.7.
Code that supports Python 3.7 can still be linted with the --py-version=3.7 setting.

Refs #6306
Disables placed in a try block now apply to the except block.
Previously, they only happened to do so in the presence of an else clause.

Refs #7767
pyreverse now uses a new default color palette that is more colorblind friendly.
The color scheme is taken from Paul Tol's Notes <https://personal.sron.nl/~pault/>_.
If you prefer other colors, you can use the --color-palette option to specify custom colors.

Closes #8251
Everything related to the __implements__ construct was removed. It was based on PEP245
that was proposed in 2001 and rejected in 2006.

The capability from pyreverse to take __implements__ into account when generating diagrams
was also removed.

Refs #8404
pyreverse: Support for the .vcg output format (Visualization of Compiler Graphs) has been dropped.

Closes #8416
The warning when the now useless old pylint cache directory (pylint.d) was
found was removed. The cache dir is documented in
the FAQ <https://pylint.readthedocs.io/en/latest/faq.html#where-is-the-persistent-data-stored-to-compare-between-successive-runs>_.

Refs #8462
Following a deprecation period, pylint.config.PYLINTRC was removed.
Use the pylint.config.find_default_config_files generator instead.

Closes #8862

Changes requiring user actions

The invalid-name message no longer checks for a minimum length of 3 characters by default.
(This was an unadvertised commingling of concerns between casing
and name length, and users regularly reported this to be surprising.)

If checking for a minimum length is still desired, it can be regained in two ways:
- If you are content with a disallowed-name message (instead of
  invalid-name), then simply add the option bad-names-rgxs="^..?$",
  which will fail 1-2 character-long names. (Ensure you enable
  disallowed-name.)
- If you would prefer an invalid-name message to be emitted, or would
  prefer finer-grained control over the circumstances in which messages are
  emitted (classes vs. methods, etc.), then avail yourself of the regex
  options described
  here <https://pylint.readthedocs.io/en/stable/user_guide/configuration/all-options.html#main-checker>.
  (In particular, take note of the commented out options in the "example
  configuration" given at the bottom of the section.) The prior regexes can
  be found in the
  pull request <https://github.com/pylint-dev/pylint/pull/8813>
  that removed the length requirements.
Closes #2018
The compare to empty string checker (pylint.extensions.emptystring) and the compare to
zero checker (pylint.extensions.compare-to-zero) have been removed and their checks are
now part of the implicit booleaness checker:
- compare-to-zero was renamed use-implicit-booleaness-not-comparison-to-zero and
  compare-to-empty-string was renamed use-implicit-booleaness-not-comparison-to-string
  and they now need to be enabled explicitly.
- The pylint.extensions.emptystring and pylint.extensions.compare-to-zero extensions
  no longer exist and need to be removed from the load-plugins option.
- Messages related to implicit booleaness were made more explicit and actionable.
  This permits to make their likeness explicit and will provide better performance as they
  share most of their conditions to be raised.
Closes #6871
epylint was removed. It now lives at: https://github.com/emacsorphanage/pylint.

Refs #7737
The overgeneral-exceptions option now only takes fully qualified names
into account (builtins.Exception not Exception). If you overrode
this option, you need to use the fully qualified name now.

There's still a warning, but it will be removed in 3.1.0.

Refs #8411
Following a deprecation period, it's no longer possible to use MASTER
or master as configuration section in setup.cfg or tox.ini. It's bad practice
to not start a section title with the tool name. Please use pylint.main instead.

Refs #8465
Package stats are now printed when running Pyreverse and a --verbose flag was added to get the original output with parsed modules. You might need to activate the verbose option if you want to keep the old output.

Closes #8973

New Features

A new json2 reporter has been added. It features a more enriched output that is
easier to parse and provides more info.

Compared to json the only changes are that messages are now under the "messages"
key and that "message-id" now follows the camelCase convention and is renamed to
"messageId".
The new reporter also reports the "score" of the modules you linted as defined by the
evaluation option and provides statistics about the modules you linted.

We encourage users to use the new reporter as the json reporter will no longer
be maintained.

Closes #4741
In Pyreverse package dependency diagrams, show when a module imports another only for type-checking.

Closes #8112
Add new option (--show-stdlib, -L) to pyreverse.
This is similar to the behavior of --show-builtin in that standard library
modules are now not included by default, and this option will include them.

Closes #8181
Add Pyreverse option to exclude standalone nodes from diagrams with --no-standalone.

Closes #8476

New Checks

Added DataclassChecker module and invalid-field-call checker to check for invalid dataclasses.field() usage.

Refs #5159
Add return-in-finally to emit a message if a return statement was found in a finally clause.

Closes #8260
Add a new checker kwarg-superseded-by-positional-arg to warn when a function is called with a keyword argument which shares a name with a positional-only parameter and the function contains a keyword variadic parameter dictionary. It may be surprising behaviour when the keyword argument is added to the keyword variadic parameter dictionary.

Closes #8558

Extensions

Add new prefer-typing-namedtuple message to the CodeStyleChecker to suggest
rewriting calls to collections.namedtuple as classes inheriting from typing.NamedTuple
on Python 3.6+.

Requires load-plugins=pylint.extensions.code_style and enable=prefer-typing-namedtuple to be raised.

Closes #8660

False Positives Fixed

Extend concept of "function ambiguity" in safe_infer() from
differing number of function arguments to differing set of argument names.

Solves false positives in tensorflow.

Closes #3613
Fix unused-argument false positive when __new__ does not use all the arguments of __init__.

Closes #3670
Fix a false positive for invalid-name when a type-annotated class variable in an enum.Enum class has no assigned value.

Refs #7402
Fix unused-import false positive for usage of six.with_metaclass.

Closes #7506
Fix false negatives and false positives for too-many-try-statements,
too-complex, and too-many-branches by correctly counting statements
under a try.

Refs #7767
When checking for unbalanced dict unpacking in for-loops, Pylint will now test whether the length of each value to be
unpacked matches the number of unpacking targets. Previously, Pylint would test the number of values for the loop
iteration, which would produce a false unbalanced-dict-unpacking warning.

Closes #8156
Fix false positive for used-before-assignment when usage and assignment
are guarded by the same test in different statements.

Closes #8167
Adds asyncSetUp to the default defining-attr-methods list to silence
attribute-defined-outside-init warning when using
unittest.IsolatedAsyncioTestCase.

Refs #8403
logging-not-lazy is not longer emitted for explicitly concatenated string arguments.

Closes #8410
Fix false positive for isinstance-second-argument-not-valid-type when union types contains None.

Closes #8424
invalid-name now allows for integers in typealias names:
- now valid: Good2Name, GoodName2.
- still invalid: _1BadName.
Closes #8485
No longer consider Union as type annotation as type alias for naming checks.

Closes #8487
unnecessary-lambda no longer warns on lambdas which use its parameters in
their body (other than the final arguments), e.g.
lambda foo: (bar if foo else baz)(foo).

Closes #8496
Fixed unused-import so that it observes the dummy-variables-rgx option.

Closes #8500
Union typed variables without assignment are no longer treated as
TypeAlias.

Closes #8540
Allow parenthesized implicitly concatenated strings when check-str-concat-over-line-jumps is enabled.

Closes #8552.
Fix false positive for positional-only-arguments-expected when a function contains both a positional-only parameter that has a default value, and **kwargs.

Closes #8555
Fix false positive for keyword-arg-before-vararg when a positional-only parameter with a default value precedes *args.

Closes #8570
Fix false positive for arguments-differ when overriding __init_subclass__.

Closes #8919
Fix a false positive for no-value-for-parameter when a staticmethod is called in a class body.

Closes #9036

False Negatives Fixed

Emit used-before-assignment when calling module-level functions before definition.

Closes #1144
Apply infer_kwarg_from_call() to more checks

These mostly solve false negatives for various checks,
save for one false positive for use-maxsplit-arg.

Closes #7761
TypeAlias variables defined in functions are now checked for invalid-name errors.

Closes #8536
Fix false negative for no-value-for-parameter when a function, whose signature contains both a positional-only parameter name and also *kwargs, is called with a keyword-argument for name.

Closes #8559
Fix a false negative for too-many-arguments by considering positional-only and keyword-only parameters.

Closes #8667
Emit assignment-from-no-return for calls to builtin methods like dict.update().
Calls to list.sort() now raise assignment-from-no-return
rather than assignment-from-none for consistency.

Closes #8714
Closes #8810
consider-using-augmented-assign is now applied to dicts and lists as well.

Closes #8959

Other Bug Fixes

Support duplicate-code message when parallelizing with --jobs.

Closes #374
Support cyclic-import message when parallelizing with --jobs.

Closes #4171
--jobs can now be used with --load-plugins.

This had regressed in astroid 2.5.0.

Closes #4874
docparams extension considers type comments as type documentation.

Closes #6287
When parsing comma-separated lists of regular expressions in the config, ignore
commas that are inside braces since those indicate quantifiers, not delineation
between expressions.

Closes #7229
The ignored-modules option will now be correctly taken into account for no-name-in-module.

Closes #7578
sys.argv is now always correctly considered as impossible to infer (instead of
using the actual values given to pylint).

Closes #7710
Avoid duplicative warnings for unqualified exception names in the overgeneral-exceptions
setting when running with --jobs.

Closes #7774
Don't show class fields more than once in Pyreverse diagrams.

Closes #8189
Fix used-before-assignment false negative when TYPE_CHECKING imports
are used in multiple scopes.

Closes #8198
--clear-cache-post-run now also clears LRU caches for pylint utilities
holding references to AST nodes.

Closes #8361
Fix a crash when TYPE_CHECKING is used without importing it.

Closes #8434
Fix a used-before-assignment false positive when imports
are made under the TYPE_CHECKING else if branch.

Closes #8437
Fix a regression of preferred-modules where a partial match was used instead of the required full match.

Closes #8453
Fix a crash in pyreverse when "/" characters are used in the output filename e.g pyreverse -o png -p name/ path/to/project.

Closes #8504
Don't show arrows more than once in Pyreverse diagrams.

Closes #8522
Improve output of consider-using-generator message for min() calls with default keyword.

Closes #8563
Fixed a crash when generating a configuration file: tomlkit.exceptions.TOMLKitError: Can't add a table to a dotted key
caused by tomlkit v0.11.8.

Closes #8632
Fix a line break error in Pyreverse dot output.

Closes #8671
Fix a false positive for method-hidden when using cached_property decorator.

Closes #8753
Dunder methods defined in lambda do not trigger unnecessary-dunder-call anymore, if they cannot be replaced by the non-dunder call.

Closes #8769
Don't show duplicate type annotations in Pyreverse diagrams.

Closes #8888
Fixing inconsistent hashing issue in BaseChecker causing some reports not being exported.

Closes #9001
Don't add Optional to | annotations with None in Pyreverse diagrams.

Closes #9014
Pyreverse doesn't show multiple class association arrows anymore, but only the strongest one.

Refs #9045
Prevented data loss in the linter stats for messages relating
to the linter itself (e.g. unknown-option-value), fixing
problems with score, fail-on, etc.

Closes #9059
Fix crash in refactoring checker when unary operand used with variable in for loop.

Closes #9074

Other Changes

Pylint now exposes its type annotations.

Closes #5488 and #2079
Search for pyproject.toml recursively in parent directories up to a project or file system root.

Refs #7163, Closes #3289
All code related to the optparse config parsing has been removed.

Refs #8405
Pylint now supports python 3.12.

Refs #8718
Add a CITATION.cff file to the root of the repository containing the necessary metadata to cite Pylint.

Closes #8760
Renamed the "unneeded-not" error into "unnecessary_negation" to be clearer.

Closes #8789

Internal Changes

get_message_definition was removed from the base checker API. You can access
message definitions through the MessageStore.

Refs #8401
Everything related to the __implements__ construct was removed. It was based on PEP245
that was proposed in 2001 and rejected in 2006.

All the classes inheriting Interface in pylint.interfaces were removed.
Checker should only inherit BaseChecker or any of the other checker types
from pylint.checkers. Reporter should only inherit BaseReporter.

Refs #8404
modname and msg_store are now required to be given in FileState.
collect_block_lines has also been removed. Pylinter.current_name
cannot be null anymore.

Refs #8407
Reporter.set_output was removed in favor of reporter.out = stream.

Refs #8408
A number of old utility functions and classes have been removed:

MapReduceMixin: To make a checker reduce map data simply implement
get_map_data and reduce_map_data.

is_inside_lambda: Use utils.get_node_first_ancestor_of_type(x, nodes.Lambda)

check_messages: Use utils.only_required_for_messages

is_class_subscriptable_pep585_with_postponed_evaluation_enabled: Use
is_postponed_evaluation_enabled(node) and is_node_in_type_annotation_context(node)

get_python_path: assumption that there's always an init.py is not true since
python 3.3 and is causing problems, particularly with PEP 420. Use discover_package_path
and pass source root(s).

fix_import_path: Use augmented_sys_path and pass additional sys.path
entries as an argument obtained from discover_package_path.

get_global_option: Use checker.linter.config to get all global options.

Related private objects have been removed as well.

Refs #8409
colorize_ansi now only accepts a MessageStyle object.

Refs #8412
Following a deprecation period, Pylinter.check now only works with sequences of strings, not strings.

Refs #8463
Following a deprecation period, ColorizedTextReporter only accepts ColorMappingDict.

Refs #8464
Following a deprecation period, MessageTest's end_line and end_col_offset
must be accurate in functional tests (for python 3.8 or above on cpython, and for
python 3.9 or superior on pypy).

Refs #8466
Following a deprecation period, the do_exit argument of the Run class (and of the _Run
class in testutils) were removed.

Refs #8472
Following a deprecation period, the py_version argument of the
MessageDefinition.may_be_emitted function is now required. The most likely solution
is to use 'linter.config.py_version' if you need to keep using this
function, or to use 'MessageDefinition.is_message_enabled' instead.

Refs #8473
Following a deprecation period, the OutputLine class now requires
the right number of argument all the time. The functional output can be
regenerated automatically to achieve that easily.

Refs #8474
Following a deprecation period, is_typing_guard, is_node_in_typing_guarded_import_block and
is_node_in_guarded_import_block from pylint.utils were removed: use a combination of
is_sys_guard and in_type_checking_block instead.

Refs #8475
Following a deprecation period, the location argument of the
Message class must now be a MessageLocationTuple.

Refs #8477
Following a deprecation period, the check_single_file function of the
Pylinter is replaced by Pylinter.check_single_file_item.

Refs #8478

Performance Improvements

pylint runs (at least) ~5% faster after improvements to astroid
that make better use of the inference cache.

Refs pylint-dev/astroid#529
- Optimize is_trailing_comma().
- Cache class_is_abstract().
Refs #1954
Exit immediately if all messages are disabled.

Closes #8715

`v2.17.7`

Compare Source

2.17.7 is the last release before we only support pylint 3.0.0 or superior and python 3.8 or superior.

False Positives Fixed

Fix a regression in pylint 2.17.6 / astroid 2.15.7 causing various
messages for code involving TypeVar.

Closes #9069

Other Bug Fixes

Fix crash in refactoring checker when unary operand used with variable in for
loop.

Closes #9074

`v2.17.6`

Compare Source

Other Bug Fixes

When parsing comma-separated lists of regular expressions in the config,
ignore commas that are inside braces since those indicate quantifiers, not
delineation between expressions.

Closes #7229
sys.argv is now always correctly considered as impossible to infer
(instead of using the actual values given to pylint).

Closes #9047
Don't show class fields more than once in Pyreverse diagrams.

Closes #8189
Don't show arrows more than once in Pyreverse diagrams.

Closes #8522
Don't show duplicate type annotations in Pyreverse diagrams.

Closes #8888
Don't add Optional to | annotations with None in Pyreverse diagrams.

Closes #9014

`v2.17.5`

Compare Source

What's new in Pylint 2.17.5?

Release date: 2023-07-26

False Positives Fixed

Fix a false positive for unused-variable when there is an import in a
if TYPE_CHECKING: block and allow-global-unused-variables is set to
no in the configuration.

Closes #8696
Fix false positives generated when supplying arguments as **kwargs to IO
calls like open().

Closes #8719
Fix a false positive where pylint was ignoring method calls annotated as
NoReturn during the `inconsistent-return-stateme

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Release Notes

What's new in Pylint 3.3.1?

False Positives Fixed

Changes requiring user actions

New Features

New Checks

False Negatives Fixed

Other Bug Fixes

Other Changes

Internal Changes

What's new in Pylint 3.2.7?

False Positives Fixed

Other Bug Fixes

What's new in Pylint 3.2.6?

False Positives Fixed

Other Bug Fixes

What's new in Pylint 3.2.5 ?

Other Bug Fixes

What's new in Pylint 3.2.4?

False Positives Fixed

Other Bug Fixes

False Positives Fixed

What's new in Pylint 3.2.2?

False Positives Fixed

What's new in Pylint 3.2.1?

False Positives Fixed

Other Bug Fixes

Internal Changes

What's new in Pylint 3.2.0?

New Features

New Checks

False Negatives Fixed

False Positives Fixed

Performance Improvements

What's new in Pylint 3.1.1?

False Positives Fixed

New Features

New Checks

False Positives Fixed

False Negatives Fixed

Other Bug Fixes

Other Changes

Internal Changes

False Positives Fixed

Other Bug Fixes

What's new in Pylint 3.0.3?

False Positives Fixed

Other Bug Fixes

False Positives Fixed

Other Bug Fixes

False Positives Fixed

Other Changes

Breaking Changes

Changes requiring user actions

New Features

New Checks

Extensions

False Positives Fixed

False Negatives Fixed

Other Bug Fixes

Other Changes

Internal Changes

Performance Improvements

False Positives Fixed

Other Bug Fixes

Other Bug Fixes

What's new in Pylint 2.17.5?

False Positives Fixed

Configuration

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