[Python-checkins] [python/cpython] 5affd2: bpo-29762: More use "raise from None". (#569)

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/python/cpython
  Commit: 5affd23e6f42125998724787025080a24839266e
      https://github.com/python/cpython/commit/5affd23e6f42125998724787025080a24839266e
  Author: Serhiy Storchaka <storchaka at gmail.com>
  Date:   2017-04-05 (Wed, 05 Apr 2017)

  Changed paths:
    M Lib/_collections_abc.py
    M Lib/_weakrefset.py
    M Lib/aifc.py
    M Lib/asyncio/base_events.py
    M Lib/bdb.py
    M Lib/chunk.py
    M Lib/configparser.py
    M Lib/copyreg.py
    M Lib/difflib.py
    M Lib/dis.py
    M Lib/json/decoder.py
    M Lib/json/scanner.py
    M Lib/lib2to3/patcomp.py
    M Lib/lib2to3/pgen2/literals.py
    M Lib/lib2to3/refactor.py
    M Lib/locale.py
    M Lib/mailbox.py
    M Lib/multiprocessing/context.py
    M Lib/multiprocessing/pool.py
    M Lib/multiprocessing/process.py
    M Lib/netrc.py
    M Lib/nntplib.py
    M Lib/pickle.py
    M Lib/shutil.py
    M Lib/sysconfig.py
    M Lib/warnings.py
    M Lib/xml/dom/xmlbuilder.py
    M Lib/xml/etree/ElementPath.py
    M Tools/freeze/winmakemakefile.py
    M Tools/pynche/ColorDB.py

  Log Message:
  -----------
  bpo-29762: More use "raise from None". (#569)

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