warn about no space after an except before a (

[pylint-bot]

Originally reported by: BitBucket: gpshead, GitHub: @gpshead?

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I've seen some code use this, but it is exceedingly rare from what I can tell:

"""Test some style nits vs pylint."""

from __future__ import print_function

try:
    pass
except(IOError, KeyError) as error:
    print(error)

It'd be nice to tell users to always put a space between an except and any following ( in the case of a tuple of exceptions being specified.

In our internal code base I found around ~0.3% of except clauses with a tuple do this (tiny!).

In a bunch of open source code I've grepped over, pandas has one unittest (test_ujson.py) that repeats this pattern, numpy's fft/fftpack.py does it once. It really is not common.

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/513

[cdce8p]

pycodestyle is probably the better place for it. This one seems related: PyCQA/pycodestyle#371
black can also fix it.