New submission from Serhiy Storchaka:
Example:
>>> import pprint
>>> class S(set): pass
...
>>> S('abc')
S({'a', 'b', 'c'})
>>> pprint.pprint(S('abc'))
S({'a', 'b', 'c'})
>>> pprint.pprint(S('abc'), width=1)
{'a',
'b',
'c'}
And same for frozenset.
Here is a patch which fixes this issue. With a patch:
>>> pprint.pprint(S('abc'), width=1)
S({'a',
'b',
'c'})
----------
files: pprint_set_subclass.patch
keywords: patch
messages: 198788
nosy: fdrake, pitrou, rhettinger, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: pprint wrongly format set and frozenset subclasses
type: behavior
versions: Python 2.7, Python 3.3, Python 3.4
Added file: http://bugs.python.org/file31934/pprint_set_subclass.patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19137>
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