[issue17973] FAQ entry for: '+=' on a list inside tuple both succeeds and raises an exception

[Roundup Robot]

Roundup Robot added the comment:

New changeset b363473cfe9c by R David Murray in branch '3.3':
#17973: Add FAQ entry for ([],)[0] += [1] both extending and raising.
http://hg.python.org/cpython/rev/b363473cfe9c

New changeset 6d2f0edb0758 by R David Murray in branch 'default':
Merge #17973: Add FAQ entry for ([],)[0] += [1] both extending and raising.
http://hg.python.org/cpython/rev/6d2f0edb0758

New changeset 8edfe539d4c6 by R David Murray in branch '2.7':
#17973: Add FAQ entry for ([],)[0] += [1] both extending and raising.
http://hg.python.org/cpython/rev/8edfe539d4c6

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nosy: +python-dev

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<http://bugs.python.org/issue17973>
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