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**************************
What's New in Pylint 2.1
**************************
:Release: 2.1
:Date: 2018-08-01
Summary -- Release highlights
=============================
* This release mostly includes fixes for bugs found after the launch of 2.0.
New checkers
============
* A new check was added, ``misplaced-format-function``.
This message is emitted when pylint detects that a format function is called on non str object.
This can occur due to wrong placement of closing bracket, e.g
.. code-block:: python
print('value: {}').format(123) # bad
print('value: {}'.format(123)) # good
Other Changes
=============
* `try-except-raise` check was demoted from an error to a warning, as part of issue #2323.
* Correctly handle the new name of the Python implementation of the `abc` module.
In Python 3.7, the `abc` module has both a C implementation as well as a Python one,
but the Python implementation has a different file name that what ``pylint`` was expecting,
resulting in some checks getting confused.
* Modules with ``__getattr__`` are exempted by default from ``no-member``
There's no easy way to figure out if a module has a particular member when
the said module uses ``__getattr__``, which is a new addition to Python 3.7.
Instead we assume the safe thing to do, in the same way we do for classes,
and skip those modules from checking.
* ``invalid name`` is no longer triggered for function and attribute names longer
than 30 characters. The upper limit was removed completely.
* Fix false-positive ``undefined-variable`` for self referential class name in lamdbas
* ``no-else-return`` also specifies the type of the branch that is causing the error.
* Fixed inconsistent behaviour for bad-continuation on first line of file.
* Fixed a bug where ``pylint`` was not able to disable certain messages on the last line through
the global disable option.
* ``pylint`` no longer emits `useless-return` when it finds a single statement that is the ``return`` itself
We still want to be explicit when a function is supposed to return
an optional value; even though ``pass`` could still work, it's not explicit
enough and the function might look like it's missing an implementation.
* Fixed a bug where ``pylint`` was crashing when being unable to infer the value of an argument to `next()`
* ``pylint`` no longer emit ``not-an-iterable`` when dealing with async iterators.
* ``pylint`` gained the ability to specify a default docstring type for when the check cannot guess the type
For this we added a ``--default-docstring-type`` command line option.
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