[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Jessica McKellar added the comment: Thanks for the patch, Gareth.Rees! The patch applies cleanly and the docs build cleanly with it. I visually inspected the addition in the built HTML docs and it looks good. = patch review -- keywords: +needs review -patch nosy: +jesstess stage: needs patch - patch review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Roundup Robot added the comment: New changeset 16c5d7c289c6 by Benjamin Peterson in branch '2.7': note that future_builtin's map is not quite like python 3's (closes #19363) http://hg.python.org/cpython/rev/16c5d7c289c6 -- nosy: +python-dev resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Gareth Rees added the comment: Sorry about that; here it is. I had second thoughts about recommending zip() as an alternative (that would only work for cases where the None was constant; in other cases you might need lambda *args: args, but this seemed too complicated), so the note now says only: Note: In Python 3, map() does not accept None for the function argument. -- keywords: +patch Added file: http://bugs.python.org/file34117/issue19363.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
A.M. Kuchling added the comment: Gareth Rees: it doesn't look like you attached the patch mentioned in your 02/04 comment. -- nosy: +akuchling ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Nick Coghlan added the comment: Switched to be a docs-only bug as Gareth suggested. -- assignee: rhettinger - docs@python components: +Documentation -Library (Lib) nosy: +docs@python, ncoghlan resolution: wont fix - stage: committed/rejected - needs patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Gareth Rees added the comment: What about a documentation change instead? The future_builtins chapter http://docs.python.org/2/library/future_builtins.html in the standard library documentation could note the incompatibility. I've attached a patch which adds the following note to the documentation for future_builtins.map: Note: In Python 3, map() does not accept None for the function argument. (zip() can be used instead.) -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Eric V. Smith added the comment: I agree with Raymond: it would have been nice to do this, but it's too late. Closing. -- nosy: +eric.smith resolution: - wont fix stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Raymond Hettinger added the comment: I agree with you in principle, but it is far too late in 2.7's development to take away a capability. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- assignee: - rhettinger nosy: +rhettinger ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
New submission from Gareth Rees: In Python 2.7, future_builtins.map accepts None as its first (function) argument: Python 2.7.5 (default, Aug 1 2013, 01:01:17) from future_builtins import map list(map(None, range(3), 'ABC')) [(0, 'A'), (1, 'B'), (2, 'C')] But in Python 3.x, map does not accept None as its first argument: Python 3.3.2 (default, May 21 2013, 11:50:47) list(map(None, range(3), 'ABC')) Traceback (most recent call last): File stdin, line 1, in module TypeError: 'NoneType' object is not callable The documentation says, if you want to write code compatible with Python 3 builtins, import them from this module, so this incompatibility may give Python 2.7 programmers the false impression that a program which uses map(None, ...) is portable to Python 3. I suggest that future_builtins.map in Python 2.7 should behave the same as map in Python 3: that is, it should raise a TypeError if None was passed as the first argument. -- components: Library (Lib) messages: 201020 nosy: Gareth.Rees priority: normal severity: normal status: open title: Python 2.7's future_builtins.map is not compatible with Python 3's map type: behavior versions: Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19363] Python 2.7's future_builtins.map is not compatible with Python 3's map
Changes by Jon Clements jon...@googlemail.com: -- nosy: +joncle ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19363 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
