[issue17947] Code, test, and doc review for PEP-0435 Enum
Nick Coghlan added the comment: Guido has promised an explanation for why he wants to keep the frame hack once he is back at work next week. To help him target that reply appropriately for my concrete objections to retaining it, I'd like to explain a bit more about why I think it's fundamentally impossible to create a robust stack inspection mechanism for implicit pickling support. Even if a dedicated mechanism for it is added, the information the interpreter needs to make a sensible reliable decision simply isn't there. Consider the following: # In utils.py def enum_helper(name, prefix, fields): if isinstance(fields, str): fields = fields.split() e = Enum(name, (prefix + field for field in fields)) return e # In some other module from utils import enum_helper MyEnum = enum_helper(MyEnum, st_, mtime atime ctime) This breaks the frame hack, but would work correctly if enum_helper was redesigned to accept an explicit module name, or if we adopted something like the name binding protocol discussed on Python ideas. If we adopted a simplistic rule of ignoring function scopes and only look at module and class scopes, then we break the semantics of the global keyword. I consider the frame hack fundamentally broken, since there's currently no way the interpreter can distinguish between an incidental assignment (like the e = Enum... call in util.py) and a destination assignment (like the MyEnum = enum_helper... call), and if we *do* add a different syntax for this supports pickling assignments (like the def name = expr syntax on Python ideas), then a name binding protocol makes more sense than implicit contextual magic. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Nick Coghlan added the comment: I don't think that would be wise - there's currently other logic in _get_mixins that subclasses would then have to duplicate. I was thinking more of an allow_subclass() API that subtypes could override to always return True. EnumMeta would then just factor the relevant piece of _get_mixins out into the default allow_subclass implementation. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
New submission from Nick Coghlan: Creating this as a separate issue so as not to delay incorporation of the accepted PEP. One legitimate criticism of the accepted PEP 435 is that the combination of requiring explicit assignment of values *and* allowing aliasing by default is that aliases may be created inadvertently. I believe we can actually do better than the initial implementation by making the following work: class Shape(Enum): ... square = 2 ... diamond = 1 ... circle = 3 ... alias_for_square = square ... Shape.square Shape.square: 2 Shape.alias_for_square Shape.square: 2 Shape(2) Shape.square: 2 While *disallowing* the following: class Shape(Enum): ... square = 2 ... diamond = 1 ... circle = 3 ... alias_for_square = 2 ... How, do you ask? By wrapping non-descriptors on assignment in a placeholder type, and keeping track of which values we have already seen. If a new attribute is mapped to a placeholder, then that's fine, we accept it as an explicit declaration of an alias. However, if it's mapped directly to a repeat value, then that would be disallowed (as it was in earlier versions of the PEP). -- messages: 188981 nosy: ncoghlan priority: normal severity: normal stage: needs patch status: open title: Alternate approach to aliasing for PEP 435 type: enhancement versions: Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Changes by Nick Coghlan ncogh...@gmail.com: -- dependencies: +Code, test, and doc review for PEP-0435 Enum ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Nick Coghlan added the comment: I also created issue 17959 to track a legitimate concern with the current aliasing design, without impacting incorporation of the accepted PEP. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Alex Gaynor added the comment: This would preclude code like: class Shape(Enum): rectangle = shape = 2 which seems (to me) to be the most reasonable way to express aliasing. -- nosy: +alex ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17890] argparse: mutually exclusive groups full of suppressed args can cause AssertionErrors
Yogesh Chaudhari added the comment: @Terry: Thanks for the info. I seem to have the elusive * after my username now. I am not sure how this works, but can you review/test/apply the patch now? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17890 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17940] extra code in argparse.py
Yogesh Chaudhari added the comment: I guess that was simple enough. I am new to this issue tracker for Cpython. How will the patch review/commit proceed? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17940 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17960] Clarify the required behaviour of locals()
New submission from Nick Coghlan: As proposed at [1], I would like to tighten up the definition of locals so that defining enum members programmatically is officially supported behaviour. I'll come up with a patch soonish. [1] http://mail.python.org/pipermail/python-dev/2013-May/125917.html -- assignee: ncoghlan components: Documentation messages: 188986 nosy: benjamin.peterson, gvanrossum, ncoghlan priority: normal severity: normal stage: needs patch status: open title: Clarify the required behaviour of locals() type: behavior versions: Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17960 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17960] Clarify the required behaviour of locals()
Ezio Melotti added the comment: See also #17546 and #7083. -- nosy: +ezio.melotti ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17960 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Nick Coghlan added the comment: That's a terrible way to express aliasing, because it's really unclear that rectangle is the canonical name. By contrast: class Shape(Enum): rectangle = 2 oblong = rectangle leaves no doubt as to which is canonical and which is the alias. You never need to go beyond two assignments, as you can still use multiple target assignment for the aliases. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17606] xml.sax.saxutils.XMLGenerator cannot output with the correct encoding
Changes by Antonio Pérez ape...@skarcha.com: -- nosy: +skarcha ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17606 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17960] Clarify the required behaviour of locals()
Changes by Florent Xicluna florent.xicl...@gmail.com: -- nosy: +flox ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17960 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17934] Add a frame method to clear expensive details
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[issue17810] Implement PEP 3154 (pickle protocol 4)
Alexandre Vassalotti added the comment: Stefan, I took a quick look at your patch. There is a couple things that stands out. First, I think the implementation of BINGLOBAL and BINGLOBAL_BIG should be moved to another patch. Adding a binary version opcode for GLOBAL is a separate feature and it should be reviewed independently. Personally, I prefer the STACK_GLOBAL opcode I proposed as it much simpler to implement, but I am biased. Next, the patch's formatting should be fixed to conform to PEP 7 and PEP 8. Make sure the formatting is consistent with the surrounding code. In particular, comments should be full sentences that explains why we need this code. Avoid adding comments that merely say what the code does, unless the code is complex. In addition, please replace the uses of PyUnicode_InternFromString with the _Py_IDENTIFIER as needed. The latter allow the static strings to be garbage collected when the module is deleted, which is friendlier to embedded interpreters. It is also lead to cleaner code. Finally, the class method check hack looks like a bug to me. There are multiple solutions here. For example, we could fix class methods to be cached so they always have the same ID once they are created. Or, we could remove the 'is' check completely if it is unnecessary. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17810 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17666] Extra gzip headers breaks _read_gzip_header
Georg Brandl added the comment: Cherry-picked to 3.2 branch as c31ff361cde3. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17666 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17843] Lib/test/testbz2_bigmem.bz2 trigger virus warnings
Georg Brandl added the comment: Thanks, applied to 3.2 branch. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17843 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17857] sqlite modules doesn't build with 2.7.4 on Mac OS X 10.4
Georg Brandl added the comment: Cherry-picked to 3.2 branch. -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17857 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17838] Can't assign a different value for sys.stdin in IDLE
Roundup Robot added the comment: New changeset 5f62c848f713 by Benjamin Peterson in branch '3.3': prevent IDLE from trying to close when sys.stdin is reassigned (#17838) http://hg.python.org/cpython/rev/5f62c848f713 New changeset bc322854c336 by Georg Brandl in branch 'default': Issue #17838: merge with 3.3 http://hg.python.org/cpython/rev/bc322854c336 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17838 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17585] IDLE - regression with exit() and quit()
Changes by Georg Brandl ge...@python.org: -- versions: -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17585 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16805] when building docs on Debian 7 -- ERROR: Error in note directive
Tshepang Lekhonkhobe added the comment: Ok. I thought doc fixes were exempt. Strange policy there. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16805 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15902] imp.load_module won't accept None for the file argument for a C extension
Changes by Georg Brandl ge...@python.org: -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15902 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17957] remove outdated (and unexcellent) paragraph in whatsnew
Changes by Tshepang Lekhonkhobe tshep...@gmail.com: Removed file: http://bugs.python.org/file30227/diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17957 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17957] remove outdated (and unexcellent) paragraph in whatsnew
Changes by Tshepang Lekhonkhobe tshep...@gmail.com: Added file: http://bugs.python.org/file30230/diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17957 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17585] IDLE - regression with exit() and quit()
Changes by Georg Brandl ge...@python.org: -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17585 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17957] remove outdated (and unexcellent) paragraph in whatsnew
Tshepang Lekhonkhobe added the comment: uploaded the correct one; sori -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17957 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16805] when building docs on Debian 7 -- ERROR: Error in note directive
Georg Brandl added the comment: Please do not comment on policies if you don't understand our release system. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16805 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Changes by Nick Coghlan ncogh...@gmail.com: -- priority: normal - high ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17838] Can't assign a different value for sys.stdin in IDLE
Serhiy Storchaka added the comment: 3.2? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17838 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Nick Coghlan added the comment: I elaborated on this point in http://python-notes.boredomandlaziness.org/en/latest/python3/enum_creation.html#support-for-alternate-declaration-syntaxes However, I'm now wondering if the problem is simply that the no extension of enums rule is more restrictive than it needs to be. If you *don't define any new methods*, then there's no problem with extending an enumeration - it's only the combination of extension and adding extra behaviour which is incoherent. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Changes by Eric V. Smith e...@trueblade.com: -- nosy: +eric.smith ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15535] Fix pickling efficiency of named tuples in 2.7.3
Roundup Robot added the comment: New changeset 31eaf8a137ea by Georg Brandl in branch '3.2': Issue #15535: Fix pickling of named tuples. http://hg.python.org/cpython/rev/31eaf8a137ea -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15535 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17843] Lib/test/testbz2_bigmem.bz2 trigger virus warnings
Roundup Robot added the comment: New changeset 9da98ab823c9 by Georg Brandl in branch '3.2': Issue #17843: Remove bz2 test data that triggers antivirus warnings. http://hg.python.org/cpython/rev/9da98ab823c9 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17843 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17857] sqlite modules doesn't build with 2.7.4 on Mac OS X 10.4
Roundup Robot added the comment: New changeset d5b5116bf953 by Serhiy Storchaka in branch '3.2': Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3, http://hg.python.org/cpython/rev/d5b5116bf953 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17857 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17915] Encoding error with sax and codecs
Roundup Robot added the comment: New changeset 1c01571ce0f4 by Georg Brandl in branch '3.2': Issue #17915: Fix interoperability of xml.sax with file objects returned by http://hg.python.org/cpython/rev/1c01571ce0f4 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17915 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1159051] Handle corrupted gzip files with unexpected EOF
Roundup Robot added the comment: New changeset 854ba6f414a8 by Georg Brandl in branch '3.2': Issue #1159051: Back out a fix for handling corrupted gzip files that http://hg.python.org/cpython/rev/854ba6f414a8 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1159051 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17666] Extra gzip headers breaks _read_gzip_header
Roundup Robot added the comment: New changeset c31ff361cde3 by Serhiy Storchaka in branch '3.2': Close #17666: Fix reading gzip files with an extra field. http://hg.python.org/cpython/rev/c31ff361cde3 -- stage: commit review - committed/rejected ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17666 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17958] int(math.log(2**i, 2))
Mark Dickinson added the comment: Sorry: this is not a bug, but a difficult-to-avoid consequence of floating-point imprecision: math.log(n, 2) is computed as log(n) / log(2), and each of the log computations and the division can introduce small errors. For what it's worth, Python 3.3 has a `log2` function, which has accuracy that's a little bit better than math.log(n, 2), and gives the 'correct' answer exact powers of 2. Closing as invalid. -- nosy: +mark.dickinson resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17958 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17958] int(math.log(2**i, 2))
Mark Dickinson added the comment: Postscript: depending on what you're doing, you might also find the int.bit_length method helpful. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17958 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17838] Can't assign a different value for sys.stdin in IDLE
Georg Brandl added the comment: Not necessary as per msg188301. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17838 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Ethan Furman added the comment: Another approach to handling this, and other, issues is to allow options to EnumMeta. My original aenum code had the default Enum class as unordered, no duplicates allowed, non-indexable, etc., but then allowed options to be passed in such as DUPLICATES to allow duplicates, ORDERED to add the ge-gt-le-lt methods, INDEXED to add __index__, etc. For the aliasing issue this method is more robust as placeholders are not required, and code like this will work: class Physics(Enum): e = 2.81847 pi = 3.141596 tau = 2 * pi To make that code work with placeholders is possible (I have it in aenum) but a major pain (I was about to remove it before my offer to help with ref435 was accepted). -- nosy: +ethan.furman ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17915] Encoding error with sax and codecs
Georg Brandl added the comment: Fixed in 3.2, 3.3 and default. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17915 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1159051] Handle corrupted gzip files with unexpected EOF
Changes by Georg Brandl ge...@python.org: -- priority: release blocker - normal ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1159051 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1159051] Handle corrupted gzip files with unexpected EOF
Changes by Georg Brandl ge...@python.org: -- versions: -Python 2.7, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1159051 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1159051] Handle corrupted gzip files with unexpected EOF
Roundup Robot added the comment: New changeset 9c2831fe84e9 by Georg Brandl in branch '3.3': Back out patch for #1159051, which caused backwards compatibility problems. http://hg.python.org/cpython/rev/9c2831fe84e9 New changeset 5400e8fbc1de by Georg Brandl in branch 'default': null-merge reversion of #1159051 patch from 3.3 http://hg.python.org/cpython/rev/5400e8fbc1de -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1159051 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17732] distutils.cfg Can Break venv
Roundup Robot added the comment: New changeset 6c5a3d194a10 by Georg Brandl in branch '3.3': Closes issue #17732: ignore install-directory specific options in http://hg.python.org/cpython/rev/6c5a3d194a10 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17732 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17958] int(math.log(2**i, 2))
Mark Dickinson added the comment: For tracker archaeologists: see also issue #11888, issue #9959. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17958 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17961] Use enum names as values in enum.Enum convenience API
New submission from Nick Coghlan: I encountered an interesting suggestion [1] regarding the enum.Enum convenience API: use the member names as their values, rather than the current integers starting from one. Since we're now using definition order rather than value order for iteration, this suggestion makes a lot of sense to me. (again, posting this as something to consider after the accepted PEP is incorporated) [1] http://www.acooke.org/cute/Pythonssad0.html -- messages: 189013 nosy: ncoghlan priority: normal severity: normal stage: needs patch status: open title: Use enum names as values in enum.Enum convenience API type: enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17961 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17961] Use enum names as values in enum.Enum convenience API
Changes by Nick Coghlan ncogh...@gmail.com: -- dependencies: +Code, test, and doc review for PEP-0435 Enum versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17961 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Nick Coghlan added the comment: Another post-incorporation proposal (issue 17961) relating to the values used for the functional API. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Ethan Furman added the comment: Make it simpler: class EnumMeta(): allow_subclass = False class MyEnumMeta(EnumMeta): allow_subclass = True -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17934] Add a frame method to clear expensive details
Antoine Pitrou added the comment: Mostly looks good to me, but I think I'd prefer that attempts to clear a running frame raise RuntimeError with an appropriate message. Hmm, why not. My intuition was to make frame.clear() a best-effort method, but this sounds ok too. I also wonder how this might relate to Eric Snow's proposal to reference the currently executing function from the frame object (see issue 12857). It seems to me that the f_func pointer in that patch could serve the same purpose as the f_executing boolean flag in this patch, while providing additional information about the execution context. Yes, perhaps. Then Eric's patch can incorporate that change once the frame.clear() patch is committed. (We may want to add a clear_frames convenience method to tracebacks as well) That, or in the traceback module. The reason I'm proposing this one as a frame method is that it can't be done in pure Python. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17934 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17961] Use enum names as values in enum.Enum convenience API
Changes by Ethan Furman et...@stoneleaf.us: -- nosy: +ethan.furman ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17961 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17810] Implement PEP 3154 (pickle protocol 4)
Antoine Pitrou added the comment: Stefan, I took a quick look at your patch. There is a couple things that stands out. It would be nice if you could reconcile each other's work. Especially so I don't re-implement framing on top of something else :-) Adding a binary version opcode for GLOBAL is a separate feature and it should be reviewed independently. Well, it's part of the PEP. Personally, I prefer the STACK_GLOBAL opcode I proposed as it much simpler to implement, but I am biased. I agree it sounds simpler. I hadn't thought about it when first writing the PEP. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17810 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17732] distutils.cfg Can Break venv
Changes by Georg Brandl ge...@python.org: -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17732 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17962] Broken OpenSSL version in Windows builds
New submission from Antoine Pitrou: 3.3 and default are currently fetching OpenSSL 1.0.1d for the Windows builds. It seems OpenSSL 1.0.1d was a kind of brown paper bag release, they've released 1.0.1e since (some of test_ssl can fail on 1.0.1d and succeed on 1.0.1e, as experienced on my Linux setup; the Windows buildbots also exhibit similar failures). Following is their description of the fix: “Changes between 1.0.1d and 1.0.1e [11 Feb 2013] *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI supporting platforms or when small records were transferred. [Andy Polyakov, Steve Henson]” -- components: Build, Windows messages: 189018 nosy: georg.brandl, larry, loewis, pitrou priority: release blocker severity: normal status: open title: Broken OpenSSL version in Windows builds type: behavior versions: Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17962 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Ethan Furman added the comment: After more thought, I think we should leave the shortened version of _StealthProperty as is. The reasoning being that if _StealthProperty does the __getattr__ lookup itself, and fails, it will return an AttributeError... and then Python will use __getattr__ again to try and find the attribute. So I'll add a comment into the shortened version and leave it at that. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17425] Update OpenSSL versions in Windows builds
Antoine Pitrou added the comment: Opened #17962 to tackle the broken OpenSSL issue. -- stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17425 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Eli Bendersky added the comment: Nick, could you open a separate issue for the frame hack discussion, like you did for the other things? You can make this one depend on it, if you feel it's a blocker, but let's please not intermix more discussion here. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17961] Use enum names as values in enum.Enum convenience API
Nick Coghlan added the comment: Specifically, my suggestion is that for auto-created enum members, the invariant asset x.value == str(x) should hold. In flufl.enum, using integers made sense because it relies on sorting of values to determine the iteration order. That's no longer a concern for the standard library version, as iteration has been changed to use definition order. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17961 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17961] Use enum names as values in enum.Enum convenience API
Ethan Furman added the comment: In flufl.enum integers also made since as that was the default back-end data type. Currently, the functional method allows a type declaration. The behavior there could be tweaked such that no specification meant no value (a truly valueless enum!), type=int means ints starting from 1, type=str meant str values of names, any other value and you better had made your own enum derived class to support it. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17961 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Nick Coghlan added the comment: Hmm, that's an interesting point about allowing operations on the already defined values. You could get around that by requiring that the wrapper be explicit when definined the alias: class Shape(enum.Enum): ... rectangle = 1 ... oblong = enum.alias(rectangle) Or, equivalently: class Shape(enum.Enum): ... rectangle = 1 ... oblong = enum.alias(1) So simple typos would trigger an error by default, and the enum.alias wrapper would tell the namespace (or the metaclass) hey, this should be an alias for another value already defined here. I definitely don't want us to turn the metaclass into a swiss army knife of behavioural options - I'm happy with customisation hooks in the metaclass on that front, as I believe it is an effective way to discourage excessive use of metaclass magic without preventing it when it is necessary. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Nick Coghlan added the comment: Simply removing the restriction isn't actually appropriate, as the variants that allow addition of new members should *not* allow addition of new descriptors. That's why I'm wondering if the current subclassing restriction is wrong: if you subclass an Enum derivative that already has defined members, then adding new members is OK, but adding new behaviour is not. If you subclass an Enum derivative with no members, then adding either members or behaviours is fine. If we relaxed the no subclassing rule to no new non-members, then this Enums would be natively extensible and this customisation hack wouldn't be necessary at all. We have plenty of time before 3.4 - let's get the existing implementation in before worrying further about this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17934] Add a frame method to clear expensive details
Nick Coghlan added the comment: +1 to all Antoine's replies :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17934 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Eli Bendersky added the comment: Ethan, I pasted the minimized version to point out the problem; I fully agree it should do the getattr lookup because otherwise it's very difficult to understand what's going on. Let's keep exceptions for actual exceptional situations and explicitly code the normal path. Also, _MemberOrProperty is probably a more descriptive name. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
New submission from Nick Coghlan:
(Split off from issue 17947)
collections.namedtuple includes a frame hack that attempts to make the
functional API work for ordinary module level assignments:
try:
result.__module__ = _sys._getframe(1).f_globals.get('__name__',
'__main__')
except (AttributeError, ValueError):
pass
I *really* don't like the fact that this hack is being incorporated into the
PEP 435 implementation as well, when that API has been designed to include an
explicit cross-implementation workaround for this case.
Eli asked me to move the discussion over to a new issue to allow the
implementation issue to focus on incorporating the PEP as is.
Issue 17941 (the explicit module keyword-only argument) suggest incorporating
PEP 435's robust, cross-implementation way to support pickling in the
functional API into collection namedtuple as well, suggesting to me that the
frame hack should be deprecated, not propagated further.
The main reason I don't like it is not the fact it doesn't work reliably on
other implementations, but the fact it doesn't work reliably in CPython either
- if you create a helper function, then the frame hack will pick up the module
where the helper function lives rather than where you ultimately store the
created object. Without some explicit way of telling the created object the
final destination (whether through an argument or through new syntax and a name
binding protocol), I don't see a way to resolve this dilemna in a robust way.
However, Guido tells me that he really wants to keep the frame hack (and
include it for PEP 435 as well), so this issue is basically about documenting
that rationale somewhere.
--
assignee: gvanrossum
messages: 189028
nosy: eli.bendersky, gvanrossum, ncoghlan
priority: normal
severity: normal
status: open
title: Deprecate the frame hack for implicitly getting module details
type: enhancement
versions: Python 3.4
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[issue17947] Code, test, and doc review for PEP-0435 Enum
Nick Coghlan added the comment: Eli: done, created as #17963 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Changes by Nick Coghlan ncogh...@gmail.com: -- dependencies: +namedtuple should support fully qualified name for more portable pickling ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Ethan Furman added the comment: Not trying to push, but if I don't write it down now, I'll forget later. ;) What does adding new members gain us? If I have a func xyz() that's expecting a Color, a MoreColor will work sometimes and blow up other times. Or are you saying that we may have a function mno() that takes a Color or a MoreColor? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Changes by Eli Bendersky eli...@gmail.com: -- nosy: +rhettinger ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17954] Support creation of extensible enums through metaclass subclassing
Nick Coghlan added the comment: Ah, you're right, I forgot that was the other reason for disallowing extensions through subclassing. To get extensions to work right, you need to flip it around so that isinstance(Color.red, MoreColor) is True, while isinstance(MoreColor.magenta, Color) is False. -- dependencies: -Code, test, and doc review for PEP-0435 Enum resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Ethan Furman added the comment: I believe Guido will be happy to replace the frame hack once we have something better, such as a way to implicitly (or explicitly in the case of helper functions) pass the calling module's name. Maybe a global __calling_module__ that a function can look at... or something similar, anyway. -- nosy: +ethan.furman ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Nick Coghlan added the comment: Right, but I think it's categorically impossible to make that work reliably without new syntax and a name binding protocol (or something equivalent). Due to the existence of the global keyword, the frame stack and normal assignment syntax simply don't provide adequate information for us to tell the difference between incidental assignments in a helper function and definite assignments that represent the ultimate destination. And if the solution involves new syntax, then the frame hack will have to be deprecated at some point anyway. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Nick Coghlan added the comment: Oops, that was supposed to be definitive assignments in my previous comment. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17962] Broken OpenSSL version in Windows builds
Changes by Stefan Drees ste...@drees.name: -- nosy: +sdrees ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17962 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17947] Code, test, and doc review for PEP-0435 Enum
Ethan Furman added the comment: Here's the latest patch. Note that the functional API portion is broken, and I'll get back to that this evening. Please only comment on the working code. ;) I'll make that _MemborOrProperty name change then as well. -- Added file: http://bugs.python.org/file30231/pep-0435.05.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17947 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17606] xml.sax.saxutils.XMLGenerator cannot output with the correct encoding
Roundup Robot added the comment: New changeset a32a3b79f5e8 by Serhiy Storchaka in branch '2.7': Issue #17606: Fixed support of encoded byte strings in the XMLGenerator http://hg.python.org/cpython/rev/a32a3b79f5e8 New changeset e730447caf20 by Serhiy Storchaka in branch '3.3': Issue #17606: Fixed support of encoded byte strings in the XMLGenerator http://hg.python.org/cpython/rev/e730447caf20 New changeset 00afa5350f6a by Serhiy Storchaka in branch 'default': Issue #17606: Fixed support of encoded byte strings in the XMLGenerator http://hg.python.org/cpython/rev/00afa5350f6a -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17606 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17606] xml.sax.saxutils.XMLGenerator doesn't support byte strings
Serhiy Storchaka added the comment: Thank you Sebastian for your report and patch. -- assignee: - serhiy.storchaka components: +Library (Lib) resolution: - fixed stage: - committed/rejected status: open - closed title: xml.sax.saxutils.XMLGenerator cannot output with the correct encoding - xml.sax.saxutils.XMLGenerator doesn't support byte strings type: crash - behavior versions: +Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17606 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17962] Broken OpenSSL version in Windows builds
Yogesh Chaudhari added the comment: The following patch will make use of 1.0.1e version of OpenSSL -- keywords: +patch nosy: +Yogesh.Chaudhari Added file: http://bugs.python.org/file30232/issue17962.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17962 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17838] Can't assign a different value for sys.stdin in IDLE
Serhiy Storchaka added the comment: I mean applying both issue17585 and issue17838 patches. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17838 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Changes by Guido van Rossum gu...@python.org: -- nosy: +gvanrossum ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17956] add ScheduledExecutor
Serhiy Storchaka added the comment: 1. Extends an abstract interface to support of a priority and absolute time. 2. Subclass sched.scheduler from this interface and implement missing methods. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17956 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17956] add ScheduledExecutor
Changes by Antoine Pitrou pit...@free.fr: -- versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17956 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17128] OS X system openssl deprecated - installer should build local libssl
Changes by Stefan Drees ste...@drees.name: -- nosy: +dilettant ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17128 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Changes by Stefan Drees ste...@drees.name: -- nosy: +dilettant ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17914] add os.cpu_count()
Changes by Stefan Drees ste...@drees.name: -- nosy: +dilettant ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17914 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Antoine Pitrou added the comment: That's way too much magic for my taste. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17959 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17959] Alternate approach to aliasing for PEP 435
Antoine Pitrou added the comment:
Also, since we currently don't forbid the following:
{'a': 1, 'a': 2}
{'a': 2}
I don't see why enums should be any different. Recommend closing.
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[issue11016] stat module in C
Changes by Stefan Drees ste...@drees.name: -- nosy: +dilettant ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11016 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17963] Deprecate the frame hack for implicitly getting module details
Brett Cannon added the comment: If you read the docs for sys._getframe() (http://docs.python.org/3/library/sys.html#sys._getframe) we explicitly state that the function should be considered an implementation detail for CPython. While Nick doesn't want to argue from the VM angle, I will. I would prefer to not rely on this hack in the stdlib to not put the other VMs at a disadvantage. Nick also has a good point that it is at best a heuristic as you can fool it into using the wrong result. At minimum I think the keyword argument for the module being used should be provided and documented that if it isn't provided then pickling is wishy-washy based on how you call the function and that it is not cross-VM compatible. But knowing that users won't clearly read the docs if it just happens to work in the interpreter and that is partial luck because of the possible indirection issue Nick pointed out, I think it would be better to not rely upon sys._getframe() and just ask people to explicitly specify the module if they happen to care about pickling *and* are using the functional API for enums. -- nosy: +brett.cannon ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17963 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10766] optparse uses %s in gettext calls
Mark Lawrence added the comment: I don't understand this. Fixes have already been committed via #4391 but this fix couldn't go ahead. Can somebody please clarify the situation. -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10766 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11011] More functools functions
Mark Lawrence added the comment: To summarize flip, const and identity won't happen, trampoline needs an external recipe or blog post and compose is the only one that's likely to happen. Opinions please gentlemen. -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11011 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8841] getopt errors should be specialized
Mark Lawrence added the comment: #11371 was closed on 2011-03-21 so what if anything needs doing here? -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8841 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9856] Change object.__format__(s) where s is non-empty to a TypeError
Yogesh Chaudhari added the comment:
@Eric:
when you say: If the type of the object really is object, then it can use
string formatting. It's only for non-objects that I want to add the error..
I am confused. Let me demonstrate what I'm thinking according to the statement
above.
First let us take a 'non-object':
integer=1
type(integer) != object
True
As of now it returns the following:
integer.__format__(s)
'1'
Which seems natural.
But after this patch should it return an error
Also now consider an object:
f = object()
type(f)
class 'object'
This will return the following after the patch as it does now which is:
f.__format__('')
'object object at 0xb75b7b48'
Does this mean that 'integer' should give an error, however, 'f' should give
something that appears messy?
I may be mistaken in my interpretation of the statement, so kindly let me know
if there is something else that I am not clearly understanding.
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[issue9856] Change object.__format__(s) where s is non-empty to a TypeError
Yogesh Chaudhari added the comment:
Please replace
integer.__format__(s)
with
integer.__format__('')
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[issue17956] add ScheduledExecutor
Charles-François Natali added the comment: 1. Extends an abstract interface to support of a priority I'm not sure I see the use case for priority support, do you have a sample use case? Furthermore, the executor is backed by a thread pool, so tasks can be run concurrently. Finally, the ordering is based on real-clock time - not user-provided timefunc and delayfunc: so the probability of having identical scheduled time (priority is only used for ties) is virtually 0. and absolute time. If you want and absolute time, you can simply do: p.schedule(abstime - time(), fn, args) I don't see the need to complicate the API. 2. Subclass sched.scheduler from this interface and implement missing methods. There again, I don't see the need. The goal of ScheduledExecutor is to be consistent with the Executor interface and futures, not being backward-compatible with the sched module. Also, the sched module simply can't support some operations: for example, it's impossible to have the schedule.run() method wake up when a new event with a deadline easiest than the current one is inserted. Really, there is now reason to make it compatible or similar to the sched module: this will - it it gets accepted - effectively deprecate threading.Timer and the sched module (except that the later supports user-provided time and delay functions, I don't know how often those are used). -- Added file: http://bugs.python.org/file30233/scheduled-3.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17956 ___diff -r 4b3238923b01 Lib/concurrent/futures/__init__.py --- a/Lib/concurrent/futures/__init__.pyFri May 10 19:57:44 2013 -0700 +++ b/Lib/concurrent/futures/__init__.pySun May 12 18:49:56 2013 +0200 @@ -15,4 +15,5 @@ wait, as_completed) from concurrent.futures.process import ProcessPoolExecutor -from concurrent.futures.thread import ThreadPoolExecutor +from concurrent.futures.thread import (ScheduledThreadPoolExecutor, + ThreadPoolExecutor) diff -r 4b3238923b01 Lib/concurrent/futures/_base.py --- a/Lib/concurrent/futures/_base.py Fri May 10 19:57:44 2013 -0700 +++ b/Lib/concurrent/futures/_base.py Sun May 12 18:49:56 2013 +0200 @@ -4,6 +4,7 @@ __author__ = 'Brian Quinlan (br...@sweetapp.com)' import collections +import functools import logging import threading import time @@ -499,6 +500,87 @@ self._condition.notify_all() self._invoke_callbacks() + +@functools.total_ordering +class ScheduledFuture(Future): +A future whose execution can be delayed, one-shot or periodic. + +ScheduledFutures support mutual ordering based on their scheduled execution +time, which makes them easy to use in e.g. priority queues. + + +def __init__(self, init_time, period=0, delay=0): +Initializes the future. Should not be called by clients. + +Args: +init_time: The initial absolute execution time, in seconds since + epoch. +period:The execution period, in seconds. +delay: The execution delay, in seconds. + +If a period is given, then the task will be scheduled every `period` +seconds: each execution will start `period` seconds after the starting +time of the previous execution: there will be no drift incurred by the +amount of time the task takes to execute. +Conversely, if a delay is given, then there will always be `delay` +seconds between sequential executions: each execution will start +`delay` seconds after the ending time of the previous execution: there +will be a drift incurred by the amount of time the task takes to +execute. +If neither a period nor a delay are specified, then the execution will +occur exactly once (one-shot). + +The future's result can only be retrieved for one-shot execution, +since there's no meaningful result for periodic execution (for those, +calling result()/exception() will block until the future is cancelled). + +super().__init__() +self._sched_time = init_time +if period 0: +# step 0 = fixed rate +self._step = period +elif delay 0: +# step 0 = fixed delay +self._step = -delay +else: +# step == 0 = one-shot +self._step = 0 + +def is_periodic(self): +Return True if the future execution is periodic. +return self._step != 0 + +def get_delay(self): +Return the delay until the next scheduled execution, in seconds. +with self._condition: +return self._sched_time - time.time() + +def _get_sched_time(self): +with self._condition: +return
[issue17870] Python does not provide PyLong_FromIntMax_t() or PyLong_FromUintMax_t() function
Mark Dickinson added the comment: Some comments for the first patch (I haven't really looked at the second): - I would much prefer PyLong_AsIntMax_t not to use nb_int; it should work only for instances of 'int' (just as PyLong_AsSsize_t and PyLong_AsSize_t currently do). - There's a missing 'versionadded' for PyLong_AsIntMax_t in the docs. - Will AC_CHECK_SIZEOF(intmax_t) work on platforms that don't define intmax_t? I don't know whether the #define created by the earlier AC_TYPE_INTMAX_T is available at that point. We'll probably find out from the buildbots. - Do we also need an addition to PC/pyconfig.h to define (u)intmax_t and SIZEOF_(U)INTMAX_T on Windows? - For the PyLong_As* functions, it may be more efficient to code the conversion directly instead of using _PyLong_AsByteArray. - The PyLong_As* functions assume that intmax_t and uintmax_t have no padding bits, no trap representation, and (in the case of intmax_t) use two's complement. I think it's fine to assume all these things, but we should also either document or test those assumptions. - The patch lacks tests. -- nosy: +skrah ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17870 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17962] Broken OpenSSL version in Windows builds
Roundup Robot added the comment: New changeset d047928ae3f6 by Georg Brandl in branch '3.3': Closes #17962: Build with OpenSSL 1.0.1e on Windows. http://hg.python.org/cpython/rev/d047928ae3f6 -- nosy: +python-dev resolution: - fixed stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17962 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17914] add os.cpu_count()
Yogesh Chaudhari added the comment: @STINNER: I don't understand. Where exactly should the patch handle this? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17914 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17890] argparse: mutually exclusive groups full of suppressed args can cause AssertionErrors
Terry J. Reedy added the comment: Argparse is out of my area of competence/experience. I have added a couple of people who have worked on argparse in the past and should be better able to review or suggest another reviewer. -- nosy: +bethard, r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17890 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
