pylint-dev/pylint v2.10.0

on GitHub

pyreverse: add option to produce colored output.

Closes #4488

pyreverse: add output in PlantUML format.

Closes #4498

consider-using-with is no longer triggered if a context manager is returned from a function.

Closes #4748

pylint does not crash with a traceback anymore when a file is problematic. It
creates a template text file for opening an issue on the bug tracker instead.
The linting can go on for other non problematic files instead of being impossible.

pyreverse: Show class has-a relationships inferred from the type-hint

Closes #4744

Fixed a crash when importing beyond the top level package during import-error
message creation

Closes #4775

Added ignored-parents option to the design checker to ignore specific
classes from the too-many-ancestors check (R0901).

Partially closes #3057

Added unspecified-encoding: Emitted when open() is called without specifying an encoding

Closes #3826

Improved the Similarity checker performance. Fix issue with --min-similarity-lines used with --jobs.

Close #4120
Close #4118

Don't emit no-member error if guarded behind if statement.

Ref #1162
Closes #1990
Closes #4168

The default for PYLINTHOME is now the standard XDG_CACHE_HOME, and pylint now uses appdirs.

Closes #3878

Added use-list-literal: Emitted when list() is called with no arguments instead of using []

Closes #4365

Added use-dict-literal: Emitted when dict() is called with no arguments instead of using {}

Closes #4365

Added optional extension consider-ternary-expression: Emitted whenever a variable is assigned in both branches of an if/else block.

Closes #4366

Added optional extension while-used: Emitted whenever a while loop is used.

Closes #4367

Added forgotten-debug-statement: Emitted when breakpoint, pdb.set_trace or sys.breakpointhook calls are found

Closes #3692

Fix false-positive of unused-private-member when using nested functions in a class

Closes #4673

Fix crash for unused-private-member that occurred with nested attributes.

Closes #4755

Fix a false positive for unused-private-member with class names

Closes #4681

Fix false positives for superfluous-parens with walrus operator, ternary operator and inside list comprehension.

Closes #2818
Closes #3249
Closes #3608
Closes #4346

Added format-string-without-interpolation checker: Emitted when formatting is applied to a string without any variables to be replaced

Closes #4042

Refactor of --list-msgs & --list-msgs-enabled: both options now show whether messages are emittable with the current interpreter.

Closes #4778

Fix false negative for used-before-assignment when the variable is assigned
in an exception handler, but used outside of the handler.

Closes #626

Added disable-next option: allows using # pylint: disable-next=msgid to disable a message for the following line

Closes #1682

Added redundant-u-string-prefix checker: Emitted when the u prefix is added to a string

Closes #4102

Fixed cell-var-from-loop checker: handle cell variables in comprehensions within functions,
and function default argument expressions. Also handle basic variable shadowing.

Closes #2846
Closes #3107

Fixed bug with cell-var-from-loop checker: it no longer has false negatives when
both unused-variable and used-before-assignment are disabled.

Fix false postive for invalid-all-format if the list or tuple builtin functions are used

Closes #4711

Config files can now contain environment variables

Closes #3839

Fix false-positive used-before-assignment with an assignment expression in a Return node

Closes #4828

Added use-sequence-for-iteration: Emitted when iterating over an in-place defined set.

CodeStyleChecker

• Limit consider-using-tuple to be emitted only for in-place defined lists.

• Emit consider-using-tuple even if list contains a starred expression.

Ignore decorators lines by similarities checker when ignore signatures flag enabled

Closes #4839

Allow true and false values in pylintrc for better compatibility with toml config.

Class methods' signatures are ignored the same way as functions' with similarities "ignore-signatures" option enabled

Closes #4653

Improve performance when inferring Call nodes, by utilizing caching.

Improve error message for invalid-metaclass when the node is an Instance.