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***************************
What's New in Pylint 2.10
***************************
:Release: 2.10
:Date: TBA
Summary -- Release highlights
=============================
New checkers
============
* Added ``unspecified-encoding``: Emitted when open() is called without specifying an encoding
Closes #3826
* 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 ``forgotten-debug-statement``: Emitted when ``breakpoint``, ``pdb.set_trace`` or ``sys.breakpointhook`` calls are found
Closes #3692
* Added ``use-sequence-for-iteration``: Emitted when iterating over an in-place defined ``set``.
Extensions
==========
* ``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.
Other Changes
=============
* pyreverse now permit to produce colored generated diagram by using the ``colorized`` option.
* Pyreverse - add output in PlantUML format
* ``consider-using-with`` is no longer triggered if a context manager is returned from a function.
* 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 type-hints
* Performance of the Similarity checker has been improved.
* Added ``time.clock`` to deprecated functions/methods for python 3.3
* Added ``ignored-parents`` option to the design checker to ignore specific
classes from the ``too-many-ancestors`` check (R0901).
* Don't emit ``no-member`` error if guarded behind if statement.
Ref #1162
Closes #1990
Closes #4168
* Fix false positives for ``superfluous-parens`` with walrus operator, ternary operator and inside list comprehension.
Closes #2818
Closes #3249
Closes #3608
Closes #4346
* 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 ``format-string-without-interpolation`` checker: Emitted when formatting is applied to a string without any variables to be replaced
Closes #4042
* 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.
|
