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93 lines
2.5 KiB
ReStructuredText
93 lines
2.5 KiB
ReStructuredText
**************************
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What's New In Pylint 1.9
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**************************
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:Release: 1.9
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:Date: 2018-05-15
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Summary -- Release highlights
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=============================
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* None so far
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New checkers
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============
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* A new Python 3 checker was added to warn about the removed ``operator.div`` function.
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* A new Python 3 checker was added to warn about accessing functions that have been
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moved from the urllib module in corresponding subpackages, such as ``urllib.request``.
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.. code-block:: python
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from urllib import urlencode
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Instead the previous code should use ``urllib.parse`` or ``six.moves`` to import a
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module in a Python 2 and 3 compatible fashion:
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.. code-block:: python
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from six.moves.urllib.parse import urlencode
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To have this working on Python 3 as well, please use the ``six`` library:
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.. code-block:: python
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six.reraise(Exception, "value", tb)
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* A new check was added to warn about using unicode raw string literals. This is
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a syntax error in Python 3:
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.. code-block:: python
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a = ur'...'
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* Added a new `deprecated-sys-function` check, emitted when accessing removed `sys` members.
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* Added `xreadlines-attribute` check, emitted when the `xreadlines()` attribute is accessed
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on a file object.
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* Added two new Python 3 porting checks, `exception-escape` and `comprehension-escape`
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These two are emitted whenever pylint detects that a variable defined in the
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said blocks is used outside of the given block. On Python 3 these values are deleted.
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.. code-block:: python
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try:
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1/0
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except ZeroDivisionError as exc:
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...
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print(exc) # This will raise a NameError on Python 3
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[i for i in some_iterator if some_condition(i)]
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print(i) # This will raise a NameError on Python 3
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Other Changes
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=============
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* `defaultdict` and subclasses of `dict` are now handled for `dict-iter-*` checks. That
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means that the following code will now emit warnings for when `iteritems` and friends
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are accessed:
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.. code-block:: python
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some_dict = defaultdict(list)
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...
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some_dict.iterkeys()
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* Enum classes no longer trigger `too-few-methods`
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* Special methods now count towards `too-few-methods`,
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and are considered part of the public API.
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They are still not counted towards the number of methods for
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`too-many-methods`.
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* docparams allows abstract methods to document returns documentation even
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if the default implementation does not return something.
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They also no longer need to document raising a NotImplementedError.
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