pylint-dev/pylint v2.14.0-b1

2.14.0-b1

on GitHub

Provisional changelog for 2.14.0:

• We have improved our recognition of inline disable and enable comments. It is
  now possible to disable bad-option-value inline (as long as you disable it before
  the bad option value is raised, i.e. disable=bad-option-value,bad-message not disable=bad-message,bad-option-value ) as well as certain other previously unsupported messages.

  Closes #3312

• Added new checker comparison-of-constants.

  Closes #6076

• Started ignoring underscore as a local variable for too-many-locals.

  Closes #6488

• Improved wording of the message of deprecated-module

  Closes #6169

• Pylint now requires Python 3.7.2 or newer to run.

  Closes #4301

• BaseChecker classes now require the linter argument to be passed.

• Fix a failure to respect inline disables for fixme occurring on the last line
  of a module when pylint is launched with --enable=fixme.

• Update invalid-slots-object message to show bad object rather than its inferred value.

  Closes #6101

• The main checker name is now main instead of master. The configuration does not need to be updated as sections' name are optional.

  Closes #5467

• Added new checker typevar-name-mismatch: TypeVar must be assigned to a variable with the same name as its name argument.

  Closes #5224

• Pylint can now be installed with an extra-require called spelling (pip install pylint[spelling]).
  This will add pyenchant to pylint's dependencies. You will still need to install the
  requirements for pyenchant (the enchant library and any dictionaries) yourself. You will also
  need to set the spelling-dict option.

  Refs #6462

• Removed the assign-to-new-keyword message as there are no new keywords in the supported Python
  versions any longer.

  Closes #4683

• Fixed a crash in the not-an-iterable checker involving multiple starred expressions
  inside a call.

  Closes #6372

• Fixed failure to enable deprecated-module after a disable=all
  by making ImportsChecker solely responsible for emitting deprecated-module instead
  of sharing responsibility with StdlibChecker. (This could have led to double messages.)

• The no-init (W0232) warning has been removed. It's ok to not have an __init__ in a class.

  Closes #2409

• The config attribute of BaseChecker has been deprecated. You can use checker.linter.config
  to access the global configuration object instead of a checker-specific object.

  Ref #5392

• The level attribute of BaseChecker has been deprecated: everything is now
  displayed in --help, all the time.

  Ref #5392

• The options_providers attribute of ArgumentsManager has been deprecated.

  Ref #5392

• The option_groups attribute of PyLinter has been deprecated.

  Ref #5392

• All Interface classes in pylint.interfaces have been deprecated. You can subclass
  the respective normal classes to get the same behaviour. The __implements__ functionality
  was based on a rejected PEP from 2001:
  https://peps.python.org/pep-0245/

  Closes #2287

• The set_option method of BaseChecker has been deprecated. You can use checker.linter.set_option
  to set an option on the global configuration object instead of a checker-specific object.

  Ref #5392

• implicit-str-concat will now be raised on calls like open("myfile.txt" "a+b") too.

  Closes #6441

• The config attribute of PyLinter is now of the argparse.Namespace type instead of
  optparse.Values.

  Ref #5392

• MapReduceMixin has been deprecated. BaseChecker now implements get_map_data and
  reduce_map_data. If a checker actually needs to reduce data it should define get_map_data
  as returning something different than None and let its reduce_map_data handle a list
  of the types returned by get_map_data.
  An example can be seen by looking at pylint/checkers/similar.py.

• UnsupportedAction has been deprecated.

  Ref #5392

• OptionsManagerMixIn has been deprecated.

  Ref #5392

• OptionParser has been deprecated.

  Ref #5392

• Option has been deprecated.

  Ref #5392

• OptionsProviderMixIn has been deprecated.

  Ref #5392

• ConfigurationMixIn has been deprecated.

  Ref #5392

• get_global_config has been deprecated. You can now access all global options from
  checker.linter.config.

  Ref #5392

• OptionsManagerMixIn has been replaced with ArgumentsManager. ArgumentsManager is considered
  private API and most methods that were public on OptionsManagerMixIn have now been deprecated and will
  be removed in a future release.

  Ref #5392

• OptionsProviderMixIn has been replaced with ArgumentsProvider. ArgumentsProvider is considered
  private API and most methods that were public on OptionsProviderMixIn have now been deprecated and will
  be removed in a future release.

  Ref #5392

• interfaces.implements has been deprecated and will be removed in 3.0. Please use standard inheritance
  patterns instead of __implements__.

  Ref #2287

• invalid-enum-extension: Used when a class tries to extend an inherited Enum class.

  Closes #5501

• Added the unrecognized-option message. Raised if we encounter any unrecognized options.

  Closes #5259

• Added new checker typevar-double-variance: The "covariant" and "contravariant" keyword arguments
  cannot both be set to "True" in a TypeVar.

  Closes #5895

• Re-enable checker bad-docstring-quotes for Python <= 3.7.

  Closes #6087

• Removed the broken generate-man option.

  Closes #5283
  Closes #1887

• Fix false negative for bad-string-format-type if the value to be formatted is passed in
  as a variable holding a constant.

• Add new check unnecessary-dunder-call for unnecessary dunder method calls.

  Closes #5936
  Closes #6074

• The cache-max-size-none checker has been renamed to method-cache-max-size-none.

  Closes #5670

• The method-cache-max-size-none checker will now also check functools.cache.

  Closes #5670

• unnecessary-lambda-assignment: Lambda expression assigned to a variable.
  Define a function using the "def" keyword instead.
  unnecessary-direct-lambda-call: Lambda expression called directly.
  Execute the expression inline instead.

  Closes #5976

• potential-index-error: Emitted when the index of a list or tuple exceeds its length.
  This checker is currently quite conservative to avoid false positives. We welcome
  suggestions for improvements.

  Closes #578

• Added optional extension redefined-loop-name to emit messages when a loop variable
  is redefined in the loop body.

  Closes #5072

• Changed message type from redefined-outer-name to redefined-loop-name
  (optional extension) for redefinitions of outer loop variables by inner loops.

  Closes #5608

• The ignore-mixin-members option has been deprecated. You should now use the new
  ignored-checks-for-mixins option.

  Closes #5205

• bad-option-value will be emitted whenever a configuration value or command line invocation
  includes an unknown message.

  Closes #4324

• Avoid reporting superfluous-parens on expressions using the is not operator.

  Closes #5930

• Added the super-without-brackets checker, raised when a super call is missing its brackets.

  Closes #4008

• Added the generate-toml-config option.

  Ref #5462

• Added new checker unnecessary-list-index-lookup for indexing into a list while
  iterating over enumerate().

  Closes #4525

• Fix falsely issuing useless-suppression on the wrong-import-position checker.

  Closes #5219

• Fixed false positive no-member for Enums with self-defined members.

  Closes #5138

• Fix false negative for no-member when attempting to assign an instance
  attribute to itself without any prior assignment.

  Closes #1555

• The concept of checker priority has been removed.

• Add a new command line option --minimal-messages-config for pytest, which disables all
  irrelevant messages when running the functional tests.

• duplicate-argument-name now only raises once for each set of duplicated arguments.

• Fix bug where specifically enabling just await-outside-async was not possible.

• The set_config_directly decorator has been removed.

• Added new message called duplicate-value which identifies duplicate values inside sets.

  Closes #5880

• Pylint now expands the user path (i.e. ~ to home/yusef/) and expands environment variables (i.e. home/$USER/$project
  to home/yusef/pylint for USER=yusef and project=pylint) for pyreverse's output-directory,
  import-graph, ext-import-graph, int-import-graph options, and the spell checker's spelling-private-dict-file
  option.

  Relates to #6493

• Created NoSelfUseChecker extension and moved the no-self-use check.
  You now need to explicitly enable this check using
  load-plugins=pylint.extensions.no_self_use.

  Closes #5502

• Fix saving of persistent data files in environments where the user's cache
  directory and the linted file are on a different drive.

  Closes #6394

• Don't emit unsubscriptable-object for string annotations.
  Pylint doesn't check if class is only generic in type stubs only.

  Closes #4369 and #6523

• is_class_subscriptable_pep585_with_postponed_evaluation_enabled has been deprecated.
  Use subscriptable_with_postponed_evaluation_enabled instead.

  Ref #6536