[issue24284] Inconsistency in startswith/endswith

Changes by Serhiy Storchaka : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ _

[issue24284] Inconsistency in startswith/endswith

Roundup Robot added the comment: New changeset a82498f424fe by Serhiy Storchaka in branch '3.5': Issue #24284: The startswith and endswith methods of the str class no longer https://hg.python.org/cpython/rev/a82498f424fe New changeset 04162e06323f by Serhiy Storchaka in branch 'default': Issue #

[issue24284] Inconsistency in startswith/endswith

Serhiy Storchaka added the comment: Thank you Martin. -- assignee: -> serhiy.storchaka versions: +Python 3.6 ___ Python tracker ___ _

[issue24284] Inconsistency in startswith/endswith

Martin Panter added the comment: How about this for What’s New: * The :meth:`str.startswith` and :meth:`str.endswith` methods no longer return ``True`` when finding the empty string and the indexes are completely out of range. See :issue:`24284`. Perhaps that is good enough, but if you wanted

[issue24284] Inconsistency in startswith/endswith

Serhiy Storchaka added the comment: Could you please help me with wording? -- ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue24284] Inconsistency in startswith/endswith

R. David Murray added the comment: Just in the what's new porting section, I think. The fact that there "should" be very little to no code that relies on this is why I'd like to see it fixed. The fact that the report was a theoretical one, and not one that broke code, is why I think we shoul

[issue24284] Inconsistency in startswith/endswith

Martin Panter added the comment: I can’t imagine much code would rely on either old or new behaviour. If you only put it into a feature release, would you have to document it as a change in behaviour? -- nosy: +vadmium ___ Python tracker

[issue24284] Inconsistency in startswith/endswith

Changes by Raymond Hettinger : -- nosy: +rhettinger ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https://mai

[issue24284] Inconsistency in startswith/endswith

R. David Murray added the comment: I think this can only be applied in a feature release (and I think it should be, because of the backward-compatibility-with-python2 issue). However, since this is potentially controversial, we need some more opinions. -- nosy: +r.david.murray version

[issue24284] Inconsistency in startswith/endswith

New submission from Serhiy Storchaka: The behavior of startswith in corner case is inconsistent between str and bytes in Python 3, str and unicode in Python 2, and between str in Python 2 and Python 3. Python 3: >>> ''.startswith('', 1, 0) True >>> b''.startswith(b'', 1, 0) False Python 2: >>