It's not just a linter that annoys you!
Release date: 2023-07-26
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-statements check.
Closes #8747
Exempt parents with only type annotations from the invalid-enum-extension
message.
Closes #8830
Fixed crash when a call to super() was placed after an operator (e.g.
not).
Closes #8554
Fix crash for modified-while-iterating checker when deleting
members of a dict returned from a call.
Closes #8598
Fix crash in invalid-metaclass check when a metaclass had duplicate
bases.
Closes #8698
Avoid consider-using-f-string on modulos with brackets in template.
Closes #8720.
Fix a crash when __all__ exists but cannot be inferred.
Closes #8740
Fix crash when a variable is assigned to a class attribute of identical name.
Closes #8754
Fixed a crash when calling copy.copy() without arguments.
Closes #8774
Fix a crash when a nonlocal is defined at module-level.
Closes #8735
Fix a false positive for bad-dunder-name when there is a user-defined
__index__ method.
Closes #8613
pyreverse: added escaping of vertical bar character in annotation labels
produced by DOT printer to ensure it is not treated as field separator of
record-based nodes.
Closes #8603
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
Release date: 2023-04-24
Fix unused-argument false positive when __new__ does not use all the
arguments of __init__.
Closes #3670
Fix unused-import false positive for usage of six.with_metaclass.
Closes #7506
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
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
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
Improve output of consider-using-generator message for min()` calls with default`` keyword.
Closes #8563
invalid-name now allows for integers in typealias names:
Good2Name, GoodName2._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
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
3.0.0a6 is an alpha release, other breaking changes will be added before the official 3.0.0 release. We're including the new features and false negative fixes that will be in 3.0.0, so it's the latest current version of pylint.
pyreverse now uses a new default color palette that is more colorblind
friendly.
The color scheme is taken from Paul Tol's Notes.
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 (Visualaization 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.
Refs #8462
epylint was removed. It now lives at: https://github.com/emacsorphanage/pylint.
Refs #7737
The 'overgeneral-exceptions' option now only takes fully qualified name
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 sections titles with the tool name. Please use pylint.main
instead.
Refs #8465
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
Adds asyncSetUp to the default defining-attr-methods list to silence
attribute-defined-outside-init warning when using
unittest.IsolatedAsyncioTestCase.
Refs #8403
invalid-name now allows for integers in typealias names:
Good2Name, GoodName2._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
--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
Pylint now exposes its type annotations.
Closes #5488 and #2079
All code related to the optparse config parsing has been removed.
Refs #8405
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 accept a MessageStyle object.
Refs #8412
The following utilities are deprecated in favor of the more robust
in_type_checking_block
and will be removed in pylint 3.0:
is_node_in_guarded_import_block
is_node_in_typing_guarded_import_block
is_typing_guard
is_sys_guard is still available, which was part of
is_node_in_guarded_import_block.
Refs #8433
Following a deprecation period, Pylinter.check now only work 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
Adds asyncSetUp to the default defining-attr-methods list to silence
attribute-defined-outside-init warning when using
unittest.IsolatedAsyncioTestCase.
Refs #8403
--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 regression of preferred-modules where a partial match was used
instead of the required full match.
Closes #8453
The following utilities are deprecated in favor of the more robust
in_type_checking_block
and will be removed in pylint 3.0:
is_node_in_guarded_import_block
is_node_in_typing_guarded_import_block
is_typing_guard
is_sys_guard is still available, which was part of
is_node_in_guarded_import_block.
Refs #8433
2.17 is a small release that is the first to support python 3.11 officially with the addition of TryStar nodes.
There's still two new default checks: bad-chained-comparison and
implicit-flag-alias, one of them already fixed a previously undetected
bug in sentry.
Thanks to the community effort our documentation is almost complete, and almost all messages should have a proper documentation now. A big thank you to everyone who participated !
The next release is going to be 3.0.0, bring breaking changes and
enact long announced deprecations. There's going to be frequent beta
releases, before the official releases, everyone is welcome to try the betas
so we find problems before the actual release.
Release date: 2023-03-08
pyreverse now supports custom color palettes with the --color-palette
option.
Closes #6738
Add invalid-name check for TypeAlias names.
Closes #7081
Accept values of the form <class name>.<attribute name> for the
exclude-protected list.
Closes #7343
Add --version option to pyreverse.
Refs #7851
Adds new functionality with preferred-modules configuration to detect submodules.
Refs #7957
Support implicit namespace packages (PEP 420).
Closes #8154
Add globbing pattern support for --source-roots.
Closes #8290
Support globbing pattern when defining which file/directory/module to lint.
Closes #8310
pylint now supports TryStar nodes from Python 3.11 and should be fully
compatible with Python 3.11.
Closes #8387
Add a bad-chained-comparison check that emits a warning when
there is a chained comparison where one expression is semantically
incompatible with the other.
Closes #6559
Adds an implicit-flag-alias check that emits a warning when a class
derived from enum.IntFlag assigns distinct integer values that share
common bit positions.
Refs #8102
Fix various false positives for functions that return directly from structural pattern matching cases.
Closes #5288
Fix false positive for used-before-assignment when
typing.TYPE_CHECKING is used with if/elif/else blocks.
Closes #7574
Fix false positive for isinstance-second-argument-not-valid-type with union types.
Closes #8205
Fix false positive for used-before-assignment for named expressions
appearing after the first element in a list, tuple, or set.
Closes #8252
Fix false positive for wrong-spelling-in-comment with class names in a
python 2 type comment.
Closes #8370
Fix a false negative for 'missing-parentheses-for-call-in-test' when inference failed for the internal of the call as we did not need that information to raise correctly.
Refs #8185
Fix false negative for inconsistent-returns with while-loops.
Closes #8280
Fix used-before-assignment false positive when the walrus operator
is used with a ternary operator in dictionary key/value initialization.
Closes #8125
Fix no-name-in-module false positive raised when a package defines a
variable with the
same name as one of its submodules.
Closes #8148
Fix a crash happening for python interpreter < 3.9 following a failed typing update.
Closes #8161
Fix nested-min-max suggestion message to indicate it's possible to splat
iterable objects.
Closes #8168
Fix a crash happening when a class attribute was negated in the start argument of an enumerate.
Closes #8207
Prevent emitting invalid-name for the line on which a global
statement is declared.
Closes #8307
Update explanation for global-variable-not-assigned and add confidence.
Closes #5073
The governance model and the path to become a maintainer have been documented as part of our effort to guarantee that the software supply chain in which pylint is included is secure.
Refs #8329
Add --version option to pyreverse.
Refs #7851
Fix false positive for used-before-assignment when
typing.TYPE_CHECKING is used with if/elif/else blocks.
Closes #7574
Fix false positive for used-before-assignment for named expressions
appearing after the first element in a list, tuple, or set.
Closes #8252
Fix used-before-assignment false positive when the walrus operator
is used with a ternary operator in dictionary key/value initialization.
Closes #8125
Fix no-name-in-module false positive raised when a package defines a
variable with the same name as one of its submodules.
Closes #8148
Fix nested-min-max suggestion message to indicate it's possible to splat
iterable objects.
Closes #8168
Fix a crash happening when a class attribute was negated in the start argument of an enumerate.
Closes #8207