pylint

Releases

1. ▸▾2.5.15 May 2020

   Fix a crash in method-hidden lookup for unknown base classes

   • Fix a crash in method-hidden lookup for unknown base classes

     Close #3527

   • Revert pylint.Run's exit parameter to do_exit

     This has been inadvertently changed several releases ago to do_exit.

     Close #3533

   • no-value-for-parameter variadic detection has improved for assign statements

     Close #3563

   • Allow package files to be properly discovered with multiple jobs

     Close #3524

   • Allow linting directories without __init__.py which was a regression in 2.5.

     Close #3528

   Open source →
2. ▸▾2.5.027 Apr 2020Deprecated

   inspect.getargvalues is no longer marked as deprecated.

   • Fix a false negative for undefined-variable when using class attribute in comprehension.

     Close #3494

   • Fix a false positive for undefined-variable when using class attribute in decorator or as type hint.

     Close #511 Close #1976

   • Remove HTML quoting of messages in JSON output.

     Close #2769

   • Adjust the invalid-name rule to work with non-ASCII identifiers and add the non-ascii-name rule.

     Close #2725

   • Positional-only arguments are taken in account for useless-super-delegation

   • unidiomatic-typecheck is no longer emitted for in and not in operators

     Close #3337

   • Positional-only argument annotations are taken in account for unused-import

     Close #3462

   • Add a command to list available extensions.

   • Allow used variables to be properly consumed when different checks are enabled / disabled

     Close #3445

   • Fix dangerous-default-value rule to account for keyword argument defaults

     Close #3373

   • Fix a false positive of self-assigning-variable on tuple unpacking.

     Close #3433

   • no-self-use is no longer emitted for typing stubs.

     Close #3439

   • Fix a false positive for undefined-variable when __class__ is used

     Close #3090

   • Emit invalid-name for variables defined in loops at module level.

     Close #2695

   • Add a check for cases where the second argument to isinstance is not a type.

     Close #3308

   • Add 'notes-rgx' option, to be used for fixme check.

     Close #2874

   • function-redefined exempts function redefined on a condition.

     Close #2410

   • typing.overload functions are exempted from docstring checks

     Close #3350

   • Emit invalid-overridden-method for improper async def overrides.

     Close #3355

   • Do not allow python -m pylint ... to import user code

     python -m pylint ... adds the current working directory as the first element of sys.path. This opens up a potential security hole where pylint will import user level code as long as that code resides in modules having the same name as stdlib or pylint's own modules.

     Close #3386

   • Add dummy-variables-rgx option for _redeclared-assigned-name check.

     Close #3341

   • Fixed graph creation for relative paths

   • Add a check for asserts on string literals.

     Close #3284

   • not in is considered iterating context for some of the Python 3 porting checkers.

   • A new check inconsistent-quotes was added.

   • Add a check for non string assignment to name attribute.

     Close #583

   • __pow__, __imatmul__, __trunc__, __floor__, and __ceil__ are recognized as special method names.

     Close #3281

   • Added errors for protocol functions when invalid return types are detected. E0304 (invalid-bool-returned): bool did not return a bool E0305 (invalid-index-returned): index did not return an integer E0306 (invalid-repr-returned): repr did not return a string E0307 (invalid-str-returned): str did not return a string E0308 (invalid-bytes-returned): bytes did not return a string E0309 (invalid-hash-returned): hash did not return an integer E0310 (invalid-length-hint-returned): length_hint did not return a non-negative integer E0311 (invalid-format-returned): format did not return a string E0312 (invalid-getnewargs-returned): getnewargs did not return a tuple E0313 (invalid-getnewargs-ex-returned): getnewargs_ex did not return a tuple of the form (tuple, dict)

     Close #560

   • missing-*-docstring can look for __doc__ assignments.

     Close #3301

   • undefined-variable can now find undefined loop iterables

     Close #498

   • safe_infer can infer a value as long as all the paths share the same type.

     Close #2503

   • Add a --fail-under <score> flag, also configurable in a .pylintrc file. If the final score is more than the specified score, it's considered a success and pylint exits with exitcode 0. Otherwise, it's considered a failure and pylint exits with its current exitcode based on the messages issued.

     Close #2242

   • Don't emit line-too-long for multilines when disable=line-too-long comment stands at their end

     Close #2957

   • Fixed an AttributeError caused by improper handling of dataclasses inference in pyreverse

     Close #3256

   • Do not exempt bare except from undefined-variable and similar checks

     If a node was wrapped in a TryExcept, pylint was taking a hint from the except handler when deciding to emit or not a message. We were treating bare except as a fully fledged ignore but only the corresponding exceptions should be handled that way (e.g. NameError or ImportError)

     Close #3235

   • No longer emit assignment-from-no-return when a function only raises an exception

     Close #3218

   • Allow import aliases to exempt import-error when used in type annotations.

     Close #3178

   • Ellipsis` is exempted from multiple-statements`` for function overloads.

     Close #3224

   • No longer emit invalid-name for non-constants found at module level.

     Pylint was taking the following statement from PEP-8 too far, considering all module level variables as constants, which is not what the statement is saying:

     Constants are usually defined on a module level and written in all capital letters with underscores separating words.

     Close #3111 Close #3132

   • Allow implicit-str-concat-in-sequence to be emitted for string juxtaposition

     Close #3030

   • implicit-str-concat-in-sequence was renamed implicit-str-concat

   • The json reporter no longer bypasses redirect_stdout. Close #3227

   • Move NoFileError, OutputLine, FunctionalTestReporter, FunctionalTestFile, LintModuleTest and related methods from test_functional.py to pylint.testutils to help testing for 3rd party pylint plugins.

   • Can read config from a setup.cfg or pyproject.toml file.

     Close #617

   • Fix exception-escape false positive with generators

     Close #3128

   • inspect.getargvalues is no longer marked as deprecated.

   • A new check f-string-without-interpolation was added

     Close #3190

   • Flag mutable collections.* utilities as dangerous defaults

     Close #3183

   • docparams extension supports multiple types in raises sections.

     Multiple types can also be separated by commas in all valid sections.

     Closes #2729

   • Allow parallel linting when run under Prospector

   • Fixed false positives of method-hidden when a subclass defines the method that is being hidden.

     Closes #414

   • Python 3 porting mode is 30-50% faster on most codebases

   • Python 3 porting mode no longer swallows syntax errors

     Closes #2956

   • Pass the actual PyLinter object to sub processes to allow using custom PyLinter classes.

     PyLinter object (and all its members except reporter) needs to support pickling so the PyLinter object can be passed to worker processes.

   • Clean up setup.py

     Make pytest-runner a requirement only if running tests, similar to McCabe.

     Clean up the setup.py file, resolving a number of warnings around it.

   • Handle SyntaxError in files passed via --from-stdin option

     Pylint no longer outputs a traceback, if a file, read from stdin, contains a syntaxerror.

   • Fix uppercase style to disallow 3+ uppercase followed by lowercase.

   • Fixed undefined-variable and unused-import false positives when using a metaclass via an attribute.

     Close #1603

   • Emit unused-argument for functions that partially uses their argument list before raising an exception.

     Close #3246

   • Fixed broad_try_clause extension to check try/finally statements and to check for nested statements (e.g., inside of an if statement).

   • Recognize classes explicitly inheriting from abc.ABC or having an abc.ABCMeta metaclass as abstract. This makes them not trigger W0223.

     Closes #3098

   • Fix overzealous arguments-differ when overridden function uses variadics

     No message is emitted if the overriding function provides positional or keyword variadics in its signature that can feasibly accept and pass on all parameters given by the overridden function.

     Close #1482 Close #1553

   • Multiple types of string formatting are allowed in logging functions.

     The logging-fstring-interpolation message has been brought back to allow multiple types of string formatting to be used.

     Close #3361