[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Please open new issue for this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Василий Макаров added the comment: open() documentation is probably broken a little now. Here is what one can see at the end of open() description: ... Deprecated since version 3.4, will be removed in version 4.0. The 'U' mode. Reader may assume open() function is what will be removed. Which is frightening :) -- nosy: +Василий.Макаров ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Roundup Robot added the comment: New changeset 2d5544afb510 by R David Murray in branch 'default': whatsnew: 'U' mode deprecation (#15204). http://hg.python.org/cpython/rev/2d5544afb510 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Roundup Robot added the comment: New changeset 694e2708b4a8 by Serhiy Storchaka in branch 'default': Issue #15204: Silence and check the 'U' mode deprecation warnings in tests. http://hg.python.org/cpython/rev/694e2708b4a8 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: -- resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Updated patch addresses Ezio's comments. -- Added file: http://bugs.python.org/file32809/deprecate-U-mode_3.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Roundup Robot added the comment: New changeset 70bd6f7e013b by Serhiy Storchaka in branch 'default': Issue #15204: Deprecated the 'U' mode in file-like objects. http://hg.python.org/cpython/rev/70bd6f7e013b -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Thanks Victor and Ezio for the reviews. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Martin Panter vadmium...@gmail.com: -- nosy: +vadmium ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Could anyone please review the patch? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Guido van Rossum gu...@python.org: -- nosy: -gvanrossum, jackjansen ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Updated patch addresses Victor's comments. -- Added file: http://bugs.python.org/file32708/deprecate-U-mode_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: Removed file: http://bugs.python.org/file26198/deprecate-U-mode-stage2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: Removed file: http://bugs.python.org/file27345/deprecate-U-mode-stage1_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Here is an updated patch. I think we can combine 1 and 2 stages (change the documentation and add warnings). -- Added file: http://bugs.python.org/file31416/deprecate-U-mode.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Vajrasky Kok added the comment: http://bugs.python.org/review/15204/diff/9032/Tools/iobench/iobench.py Line 10 in New: import io But io module is never used. -- nosy: +vajrasky ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Antoine Pitrou added the comment: Would the deprecation need to be moved up to 3.4 though now? Yes, I think so. -- versions: -Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Ezio Melotti ezio.melo...@gmail.com: -- stage: - patch review versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Ideally, this proposed deprecation should be mentioned on python-dev so that those folks will have an opportunity to respond. http://comments.gmane.org/gmane.comp.python.devel/134996 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka added the comment: Chris, you did a great job on improving the documentation (including about universal newlines). Can you help with this issue? For the first stage should be clearly shown that U mode is not only should not be used in new code, but must be removed from the old code. Stage 1 patch updated to resolve conflicts with Chris changes. -- Added file: http://bugs.python.org/file27345/deprecate-U-mode-stage1_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: Removed file: http://bugs.python.org/file26197/deprecate-U-mode-stage1.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Chris Jerdonek added the comment: Thanks, Serhiy. :) Sure, I should be able to help with the documentation portion of this issue if the community is in agreement. Would the deprecation need to be moved up to 3.4 though now? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Andrew Svetlov andrew.svet...@gmail.com: -- nosy: +asvetlov ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Raymond Hettinger added the comment: The only people affected by deprecating U are the people who are currently using it for some reason -- presumably they are expecting that it does something useful for their code. Ideally, this proposed deprecation should be mentioned on python-dev so that those folks will have an opportunity to respond. -- nosy: +rhettinger ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Chris Jerdonek chris.jerdo...@gmail.com: -- nosy: +cjerdonek ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka storch...@gmail.com added the comment: Unless there are places where it is actually broken, I don't think there is a good reason to have step 3.5, though. Just add the deprecation warning and remove it in 4.0. Well. In any case, the 'U' mode in most cases has no effect, and the code, where it has an effect (in zipfile), is very rarely used (and it is actually complicated and broken). Here are the patches for the first (documentation) and the second stage (warnings). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: -- keywords: +patch Added file: http://bugs.python.org/file26197/deprecate-U-mode-stage1.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: Added file: http://bugs.python.org/file26198/deprecate-U-mode-stage2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Nadeem Vawda nadeem.va...@gmail.com added the comment: +1 for the general idea of deprecating and eventually removing the U modes. But I agree with David, that it doesn't make sense to have separate steps for 3.5 and 3.6/4.0. If you make the code raise an exception when U is used, how is that different from what will happen when you remove the code for processing it? Surely we want it to eventually be treated just like any other invalid mode string? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
New submission from Serhiy Storchaka storch...@gmail.com: Since Python 2.3 many open functions supports Universal line mode (PEP 278). Since 3.0 (and 2.6) PEP 3116 suggests better alternative -- io.TextWrapper. Now support for the 'U' mode in the different open functions is heterogeneous. Some functions simply ignore the 'U' mode (but accept it), others perceive it as a synonym for text-mode, others just pass it on lower lever, other attempt to implement it, but the implementation is obtained imperfect and contradictory (as in ZipExtFile). The documentation for built-in open does not advise the use of the 'U' mode. The 'U' mode support cumbersome. I propose to deprecate the 'U' mode. If someone wanted to work with the universal line support, he'll surely need to work with encodings too, and io.TextWrapper provides is better choise. The deprecation plan for the 'U' mode of open functions might be as follow: 3.3. Deprecating the 'U' mode in docs for all opens (building open, io.open, codecs.open, gzip.open, ZipFile.open, etc). Add suggestion about io.TextWrapper. 3.4. Raise a warning on use of the 'U' mode. 3.5. Raise an exception on use of the 'U' mode. 3.6 (or 4.0?). Remove the 'U' mode processing code. As the first stage involves only the changes to the documentation, I hope deprecation can starts in 3.3. -- assignee: docs@python components: Documentation, IO, Library (Lib) messages: 164142 nosy: docs@python, storchaka priority: normal severity: normal status: open title: Deprecate the 'U' open mode type: behavior versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Serhiy Storchaka storch...@gmail.com: -- nosy: +gvanrossum, jackjansen, pitrou, stutzbach ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Serhiy Storchaka storch...@gmail.com added the comment: Related issues: #2091, #5148, #6759, #12900. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Antoine Pitrou pit...@free.fr added the comment: Starting to deprecate U in the 3.3 docs sounds reasonable to me. -- nosy: +georg.brandl, nadeem.vawda ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
R. David Murray rdmur...@bitdance.com added the comment: Unless there are places where it is actually broken, I don't think there is a good reason to have step 3.5, though. Just add the deprecation warning and remove it in 4.0. -- nosy: +r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15204] Deprecate the 'U' open mode
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15204 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
