[issue20426] Compiling a regex with re.DEBUG should force a recompile
Roundup Robot added the comment: New changeset a7b180d5df5f by Antoine Pitrou in branch '3.3': Issue #20426: When passing the re.DEBUG flag, re.compile() displays the debug output every time it is called, regardless of the compilation cache. http://hg.python.org/cpython/rev/a7b180d5df5f New changeset a8bcfa290e68 by Antoine Pitrou in branch 'default': Issue #20426: When passing the re.DEBUG flag, re.compile() displays the debug output every time it is called, regardless of the compilation cache. http://hg.python.org/cpython/rev/a8bcfa290e68 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20426] Compiling a regex with re.DEBUG should force a recompile
Roundup Robot added the comment: New changeset e47f6883dedf by Antoine Pitrou in branch '2.7': Issue #20426: When passing the re.DEBUG flag, re.compile() displays the debug output every time it is called, regardless of the compilation cache. http://hg.python.org/cpython/rev/e47f6883dedf -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20426] Compiling a regex with re.DEBUG should force a recompile
Antoine Pitrou added the comment: Ok, I've fixed the bug in all branches. Thanks for reporting! -- resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20426] Compiling a regex with re.DEBUG should force a recompile
Antoine Pitrou added the comment: A simple workaround is to bypass the cache when DEBUG is passed. See attached patch. (not sure this applies as a bug fix, but DEBUG probably isn't used in production anyway: the potential for breakage is low) -- keywords: +patch stage: test needed - patch review versions: +Python 2.7, Python 3.3, Python 3.4 -Python 3.5 Added file: http://bugs.python.org/file33877/re_debug_cache.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20426] Compiling a regex with re.DEBUG should force a recompile
New submission from leewz:
Compiling a regex with the `re.DEBUG` flag indicates that the user wants to see
the debug output. `re.compile` is cached, though, so there is the possibility
of no output.
Example:
import re
re.compile('1',re.DEBUG) #expected output
re.compile('1',re.DEBUG) #no output
re.compile('',re.DEBUG) #no output (empty regex)
The workaround is to call `re.purge()`, which may remove other cached regexes
that are still in use.
(Background: I wanted to check for equivalence of regexes, and a StackOverflow
answer suggested comparing their `re.DEBUG`.
http://stackoverflow.com/a/21398362/2963903)
--
components: Regular Expressions
messages: 209595
nosy: ezio.melotti, leewz, mrabarnett
priority: normal
severity: normal
status: open
title: Compiling a regex with re.DEBUG should force a recompile
type: behavior
versions: Python 3.3
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[issue20426] Compiling a regex with re.DEBUG should force a recompile
Changes by Ezio Melotti ezio.melo...@gmail.com: -- stage: - test needed versions: +Python 3.5 -Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20426] Compiling a regex with re.DEBUG should force a recompile
Serhiy Storchaka added the comment: See also issue17441. -- nosy: +pitrou, serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20426 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
