-
Add missing dunder methods to unexpected-special-method-signature check.
-
No longer emit no-member in for loops that reference self if the binary operation that
started the for loop uses a self that is encapsulated in tuples or lists.
Ref PyCQA/astroid#1360
Closes #4826
-
Output better error message if unsupported file formats are used with pyreverse.
Closes #5950
-
Fix pyreverse diagrams type hinting for classmethods and staticmethods.
-
Fix pyreverse diagrams type hinting for methods returning None.
-
Fix matching --notes options that end in a non-word character.
Closes #5840
-
Updated the position of messages for class and function defintions to no longer cover
the complete definition. Only the def or class + the name of the class/function
are covered.
Closes #5466
-
using-f-string-in-unsupported-version and using-final-decorator-in-unsupported-version msgids
were renamed from W1601 and W1602 to W2601 and W2602. Disabling using these msgids will break.
This is done in order to restore consistency with the already existing msgids for apply-builtin and
basestring-builtin from the now deleted python 3K+ checker. There is now a check that we're not using
existing msgids or symbols from deleted checkers.
Closes #5729
-
The line numbering for messages related to function arguments is now more accurate. This can
require some message disables to be relocated to updated positions.
-
Add --recursive option to allow recursive discovery of all modules and packages in subtree. Running pylint with
--recursive=y option will check all discovered .py files and packages found inside subtree of directory provided
as parameter to pylint.
Closes #352
-
Add modified-iterating-list, modified-iterating-dict and modified-iterating-set,
emitted when items are added to or removed from respectively a list, dictionary or
set being iterated through.
Closes #5348
-
Fix false-negative for assignment-from-none checker using list.sort() method.
closes #5722
-
New extension import-private-name: indicate imports of external private packages
and objects (prefixed with _). It can be loaded using load-plugins=pylint.extensions.private_import.
Closes #5463
-
Fixed crash from arguments-differ and arguments-renamed when methods were
defined outside the top level of a class.
Closes #5648
-
Removed the deprecated check_docs extension. You can use the docparams checker
to get the checks previously included in check_docs.
Closes #5322
-
Added a testutil extra require to the packaging, as gitpython should not be a dependency
all the time but is still required to use the primer helper code in pylint.testutil. You can
install it with pip install pylint[testutil].
Closes #5486
-
Reinstated checks from the python3 checker that are still useful for python 3
(eq-without-hash). This is now in the pylint.extensions.eq_without_hash optional
extension.
Closes #5025
-
Fixed an issue where ungrouped-imports could not be disabled without raising
useless-suppression.
Ref #2366
-
Added several checkers to deal with unicode security issues
(see Trojan Sources <https://trojansource.codes/>_ and
PEP 672 <https://www.python.org/dev/peps/pep-0672/>_ for details) that also
concern the readability of the code. In detail the following checks were added:
-
bad-file-encoding checks that the file is encoded in UTF-8 as suggested by
PEP8 <https://www.python.org/dev/peps/pep-0008/#id20>.
UTF-16 and UTF-32 are not supported by Python <https://bugs.python.org/issue1503789>
at the moment. If this ever changes
invalid-unicode-codec checks that they aren't used, to allow for backwards
compatibility.
-
bidirectional-unicode checks for bidirectional unicode characters that
could make code execution different than what the user expects.
-
invalid-character-backspace, invalid-character-carriage-return,
invalid-character-sub, invalid-character-esc,
invalid-character-zero-width-space and invalid-character-nul
to check for possibly harmful unescaped characters.
Closes #5281
-
Use the tomli package instead of toml to parse .toml files.
-
Better warning messages for useless else or elif when a function returns early.
Closes #5614
-
Fixed false positive consider-using-dict-comprehension when creating a dict
using a list of tuples where key AND value vary depending on the same condition.
Closes #5588
-
Fixed false positive for global-variable-undefined when global is used with a class name
Closes #3088
-
Fixed false positive for unused-variable when a nonlocal name is assigned as part of a multi-name assignment.
Closes #3781
-
Fixed a crash in unspecified-encoding checker when providing None
to the mode argument of an open() call.
Closes #5731
-
Fixed a crash involving a NewType named with an f-string.
Closes #5770
Ref PyCQA/astroid#1400
-
Improved bad-open-mode message when providing None to the mode
argument of an open() call.
Closes #5733
-
Added lru-cache-decorating-method checker with checks for the use of functools.lru_cache
on class methods. This is unrecommended as it creates memory leaks by never letting the instance
getting garbage collected.
Closes #5670
-
Fixed crash with recursion error for inference of class attributes that referenced
the class itself.
Closes #5408
Ref PyCQA/astroid#1392
-
Fixed false positive for unused-argument when a method overridden in a subclass
does nothing with the value of a keyword-only argument.
Closes #5771
Ref PyCQA/astroid#1382
-
The issue template for crashes is now created for crashes which were previously not covered
by this mechanism.
Closes #5668
-
Rewrote checker for non-ascii-name.
It now ensures all Python names are ASCII and also properly
checks the names of imports (non-ascii-module-import) as
well as file names (non-ascii-file-name) and emits their respective new warnings.
Non ASCII characters could be homoglyphs (look alike characters) and hard to
enter on a non specialized keyboard.
See Confusable Characters in PEP 672 <https://www.python.org/dev/peps/pep-0672/#confusable-characters-in-identifiers>_
-
When run in parallel mode pylint now pickles the data passed to subprocesses with
the dill package. The dill package has therefore been added as a dependency.
-
An astroid issue where symlinks were not being taken into account
was fixed
Closes #1470
Closes #3499
Closes #4302
Closes #4798
Closes #5081
-
Fix a crash in unused-private-member checker when analyzing code using
type(self) in bound methods.
Closes #5569
-
Optimize parsing of long lines when missing-final-newline is enabled.
Closes #5724
-
Fix false positives for used-before-assignment from using named
expressions in a ternary operator test and using that expression as
a call argument.
Closes #5177, #5212
-
Fix false positive for undefined-variable when namedtuple class
attributes are used as return annotations.
Closes #5568
-
Fix false negative for undefined-variable and related variable messages
when the same undefined variable is used as a type annotation and is
accessed multiple times, or is used as a default argument to a function.
Closes #5399
-
Pyreverse - add output in mermaidjs format
-
Emit used-before-assignment instead of undefined-variable when attempting
to access unused type annotations.
Closes #5713
-
Added confidence level CONTROL_FLOW for warnings relying on assumptions
about control flow.
-
used-before-assignment now considers that assignments in a try block
may not have occurred when the except or finally blocks are executed.
Closes #85, #2615
-
Fixed false negative for used-before-assignment when a conditional
or context manager intervened before the try statement that suggested
it might fail.
Closes #4045
-
Fixed false negative for used-before-assignment in finally blocks
if an except handler did not define the assignment that might have failed
in the try block.
-
Fixed extremely long processing of long lines with comma's.
Closes #5483
-
Fixed crash on properties and inherited class methods when comparing them for
equality against an empty dict.
Closes #5646
-
Fixed a false positive for assigning-non-slot when the slotted class
defined __setattr__.
Closes #3793
-
Fixed a false positive for invalid-class-object when the object
being assigned to the __class__ attribute is uninferable.
-
Fixed false positive for used-before-assignment with self-referential type
annotation in conditional statements within class methods.
Closes #5499
-
Add checker redefined-slots-in-subclass: Emitted when a slot is redefined in a subclass.
Closes #5617
-
Fixed false positive for global-variable-not-assigned when the del statement is used
Closes #5333
-
By default, pylint does no longer take files starting with .# into account. Those are
considered emacs file locks. See
https://www.gnu.org/software/emacs/manual/html_node/elisp/File-Locks.html.
This behavior can be reverted by redefining the ignore-patterns option.
Closes #367
-
Fixed a false positive for used-before-assignment when a named expression
appears as the first value in a container.
Closes #5112
-
used-before-assignment now assumes that assignments in except blocks
may not have occurred and warns accordingly.
Closes #4761
-
When evaluating statements after an except block, used-before-assignment
assumes that assignments in the except blocks took place if the
corresponding try block contained a return statement.
Closes #5500
-
Fixed a false negative for used-before-assignment when some but not all
except handlers defined a name relied upon after an except block when the
corresponding try block contained a return statement.
Closes #5524
-
When evaluating statements in the else clause of a loop, used-before-assignment
assumes that assignments in the except blocks took place if the
except handlers constituted the only ways for the loop to finish without
breaking early.
Closes #5683
-
used-before-assignment now checks names in try blocks.
-
Fixed false positive with used-before-assignment for assignment expressions
in lambda statements.
Closes #5360, #3877
-
Fixed a false positive (affecting unreleased development) for
used-before-assignment involving homonyms between filtered comprehensions
and assignments in except blocks.
Closes #5586
-
Fixed crash with slots assignments and annotated assignments.
Closes #5479
-
Fixed crash on list comprehensions that used type as inner variable name.
Closes #5461
-
Fixed crash in use-maxsplit-arg checker when providing the sep argument
to str.split() by keyword.
Closes #5737
-
Fix false positive for unused-variable for a comprehension variable matching
an outer scope type annotation.
Closes #5326
-
Fix false negative for undefined-variable for a variable used multiple times
in a comprehension matching an unused outer scope type annotation.
Closes #5654
-
Some files in pylint.testutils were deprecated. In the future imports should be done from the
pylint.testutils.functional namespace directly.
-
Fixed false positives for no-value-for-parameter with variadic
positional arguments.
Closes #5416
-
safe_infer no longer makes an inference when given two function
definitions with differing numbers of arguments.
Closes #3675
-
Fix comparison-with-callable false positive for callables that raise, such
as typing constants.
Closes #5557
-
Fixed a crash on __init__ nodes when the attribute was previously uninferable due to a cache
limit size. This limit can be hit when the inheritance pattern of a class (and therefore of the __init__ attribute) is very large.
Closes #5679
-
Fix false positive for used-before-assignment from a class definition
nested under a function subclassing a class defined outside the function.
Closes #4590
-
Fix unnecessary_dict_index_lookup false positive when deleting a dictionary's entry.
Closes #4716
-
Fix false positive for used-before-assignment when an except handler
shares a name with a test in a filtered comprehension.
Closes #5817
-
Fix crash in unnecessary-dict-index-lookup checker if the output of
items() is assigned to a 1-tuple.
Closes #5504
-
When invoking pylint, epylint, symilar or pyreverse by importing them in a python file
you can now pass an argv keyword besides patching sys.argv.
Closes #5320
-
The PyLinter class will now be initialized with a TextReporter
as its reporter if none is provided.
-
Fix super-init-not-called when parent or self is a Protocol
Closes #4790
-
Fix false positive not-callable with attributes that alias NamedTuple
Partially closes #1730
-
Emit redefined-outer-name when a nested except handler shadows an outer one.
Closes #4434
Closes #5370
-
Fix false positive super-init-not-called for classes that inherit their init from
a parent.
Closes #4941
-
encoding can now be supplied as a positional argument to calls that open
files without triggering unspecified-encoding.
Closes #5638
-
Fatal errors now emit a score of 0.0 regardless of whether the linted module
contained any statements
Closes #5451
-
fatal was added to the variables permitted in score evaluation expressions.
-
The default score evaluation now uses a floor of 0.
Closes #2399
-
Fix false negative for consider-iterating-dictionary during membership checks encapsulated in iterables
or not in checks
Closes #5323
-
Fixed crash on uninferable decorators on Python 3.6 and 3.7
-
Add checker unnecessary-ellipsis: Emitted when the ellipsis constant is used unnecessarily.
Closes #5460
-
Disable checker bad-docstring-quotes for Python <= 3.7, because in these versions the line
numbers for decorated functions and classes are not reliable which interferes with the checker.
Closes #3077
-
Fixed incorrect classification of Numpy-style docstring as Google-style docstring for
docstrings with property setter documentation.
Docstring classification is now based on the highest amount of matched sections instead
of the order in which the docstring styles were tried.
-
Fixed detection of arguments-differ when superclass static
methods lacked a @staticmethod decorator.
Closes #5371
-
TypingChecker
-
Added new check broken-noreturn to detect broken uses of typing.NoReturn
if py-version is set to Python 3.7.1 or below.
https://bugs.python.org/issue34921
-
Added new check broken-collections-callable to detect broken uses of collections.abc.Callable
if py-version is set to Python 3.9.1 or below.
https://bugs.python.org/issue42965
-
The testutils for unittests now accept end_lineno and end_column. Tests
without these will trigger a DeprecationWarning.
-
arguments-differ will no longer complain about method redefinitions with extra parameters
that have default values.
Closes #1556, #5338
-
Fixed false positive unexpected-keyword-arg for decorators.
Closes #258
-
Importing the deprecated stdlib module xml.etree.cElementTree now emits deprecated_module.
Closes #5862
-
Disables for deprecated-module and similar warnings for stdlib features deprecated
in newer versions of Python no longer raise useless-suppression when linting with
older Python interpreters where those features are not yet deprecated.
-
Importing the deprecated stdlib module distutils now emits deprecated_module on Python 3.10+.
-
missing-raises-doc will now check the class hierarchy of the raised exceptions
.. code-block:: python
def my_function()
"""My function.
Raises:
Exception: if something fails
"""
raise ValueError
Closes #4955
-
Allow disabling duplicate-code with a disable comment when running through
pylint.
Closes #214
-
Improve invalid-name check for TypeVar names.
The accepted pattern can be customized with --typevar-rgx.
Closes #3401
-
Added new checker typevar-name-missing-variance. Emitted when a covariant
or contravariant TypeVar does not end with _co or _contra respectively or
when a TypeVar is not either but has a suffix.
-
Allow usage of mccabe 0.7.x release
Closes #5878
-
Fix unused-private-member false positive when accessing private methods through property.
Closes #4756
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