Mailman 3 August 2004 - Python-Dev

possible CO_FUTURE_DECORATORS
by Robert Brewer Aug. 25, 2004

Aug. 25, 2004

[Working on the J2 patch]... If we use a keyword, we need a __future__ and AFAICT a new CO_FUTURE_DECORATORS flag. Should it just be 0x4000? #define CO_NOFREE 0x0040 /* XXX Temporary hack. Until generators are a permanent part of the language, we need a way for a code object to record that generators were *possible* when it was compiled. This is so code dynamically compiled *by* a code object knows whether to allow yield stmts. In effect, this passes on the "from __future__ import generators" state in effect when the code block was compiled. */ #define CO_GENERATOR_ALLOWED 0x1000 /* no longer used in an essential way */ #define CO_FUTURE_DIVISION 0x2000 #define CO_FUTURE_DECORATORS 0x4000 I'm mostly wondering why there's a big gap between CO_NOFREE and CO_GENERATOR_ALLOWED. Or is it a non-issue, pick-what-you-want? Robert Brewer MIS Amor Ministries fumanchu(a)amor.org

1 0

[Python-Dev] Re: [Python-checkins] python/nondist/peps pep-0318.txt, 1.25, 1.26
by Neil Schemenauer Aug. 25, 2004

Aug. 25, 2004

On Tue, Aug 24, 2004 at 11:56:13AM -0700, montanaro(a)users.sourceforge.net wrote: > Modified Files: > pep-0318.txt > Log Message: > List some possible reasons why arriving at consensus about > decorators has been so hard (or impossible) to acheive. There are > certainly more. Perhaps you could add my reservation (objection is too strong a word). I think decorators are not powerful enough given their high syntactic profile. This could be rephrased as "if we are going the use the @ sign then it should be able to do really cool things". One idea is to have the compiler pass the AST for the function body to the decorator function. The decorator could create new nodes in the AST or modify existing ones. That would allow decorators to do things like adding a try/except without introducing another function call. The output of the decorator would be passed to the code generator. Neil

5 5

RE: [Python-Dev] Re: PEP 292 - Simpler String Substitutions
by Michael Chermside Aug. 25, 2004

Aug. 25, 2004

François Pinard writes: > [quotations from the PEP motivation] let me think that people will often > forget to stringify numbers and various other value types, I agree. I'd like to raise a small voice in favor of automatically calling str() on all arguments before interpolation. I'd rather type this: # ... code ... out.write( template("$foo\t$bar\t$baz\n") % locals() ) than this: # ... code ... out.write( template("$foo\t$bar\t$baz\n") % {'foo': str(foo), 'bar': str(bar), 'baz': str(baz)} ) -- Michael Chermside

10 15

Weekly Python Bug/Patch Summary
by Kurt B. Kaiser Aug. 25, 2004

Aug. 25, 2004

Patch / Bug Summary ___________________ Patches : 259 open ( -5) / 2573 closed (+17) / 2832 total (+12) Bugs : 745 open ( +0) / 4405 closed (+21) / 5150 total (+21) RFE : 150 open ( +1) / 130 closed ( +0) / 280 total ( +1) New / Reopened Patches ______________________ Patch for bug 933795. term.h and curses on Solaris (2004-08-19) http://python.org/sf/1012280 opened by Ariel Arjona PEP 292 implementation (2004-08-22) http://python.org/sf/1014055 opened by Barry A. Warsaw Rational.py various bugfixes (2004-08-19) http://python.org/sf/1012468 opened by Russell Blau cStringIO's truncate doesn't (2004-08-20) CLOSED http://python.org/sf/1012740 opened by Dima Dorfman Fix for duplicate attributes in generated HTML (2004-08-20) http://python.org/sf/1013055 opened by Richard Brodie Cleanup Peepholer Output (2004-08-22) CLOSED http://python.org/sf/1013667 opened by Raymond Hettinger Implementation for PEP 318 using syntax J2 (2004-08-22) http://python.org/sf/1013835 opened by Michael RobotFileParser.can_fetch return value (2004-08-23) CLOSED http://python.org/sf/1014237 opened by George Yoshida Expose current parse location to XMLParser (2004-08-24) http://python.org/sf/1014930 opened by Dave Cole bug in tarfile.ExFileObject.readline (2004-08-24) http://python.org/sf/1014992 opened by GaryD Improve markup and punctuation in libsocket.tex (2004-08-24) http://python.org/sf/1015012 opened by Dima Dorfman Docs claim that coerce can return None (2004-08-24) http://python.org/sf/1015021 opened by Dima Dorfman Patches Closed ______________ baseinteger: abstract superclass for int and long (2004-08-11) http://python.org/sf/1007068 closed by nnorwitz Improve error reporting when Python opens source code (2004-08-19) http://python.org/sf/1011822 closed by loewis Add Py_InitializeEx to allow embedding without signals. (2004-02-19) http://python.org/sf/900727 closed by loewis implementation of Text.dump method (2002-04-19) http://python.org/sf/546244 closed by loewis Return new string for single subclass joins (Bug #1001011) (2004-08-11) http://python.org/sf/1007087 closed by rhettinger cStringIO's truncate doesn't (2004-08-20) http://python.org/sf/1012740 closed by tim_one Bad URL encoding in SimpleHTTPServer directory listing (2004-08-18) http://python.org/sf/1011123 closed by jlgijsbers doctest: add a special (dedented) marker for blank lines (2004-04-11) http://python.org/sf/933238 closed by jlgijsbers incorrect end-of-message handling in mailbox.BabylMailbox (2004-01-20) http://python.org/sf/880621 closed by jlgijsbers (bug 1005936) textunderscore python.sty fix (2004-08-14) http://python.org/sf/1009373 closed by nnorwitz Cleanup Peepholer Output (2004-08-22) http://python.org/sf/1013667 closed by rhettinger Non-ascii in non-unicode __credits__ in Lib/pydoc.py (2004-08-15) http://python.org/sf/1009389 closed by loewis Allow pydoc to work with XP Themes (.manifest file) (2004-07-25) http://python.org/sf/997284 closed by loewis LC_CTYPE locale and strings (2004-07-26) http://python.org/sf/997768 closed by loewis Installation database patch (2002-05-29) http://python.org/sf/562100 closed by akuchling RobotFileParser.can_fetch return value (2004-08-23) http://python.org/sf/1014237 closed by loewis thread Module Breaks PyGILState_Ensure() (2004-08-17) http://python.org/sf/1010677 closed by mhammond New / Reopened Bugs ___________________ dictionary referencing error (2004-08-19) CLOSED http://python.org/sf/1012249 opened by AMIT Consulting LLC weakref.WeakValueDictionary should override .has_key() (2004-08-19) CLOSED http://python.org/sf/1012315 opened by Myers Carpenter ctrl-left/-right works incorectly with diacritics (2004-08-19) http://python.org/sf/1012435 opened by Krzysztof Wilkosz Can't pipe input to a python program (2004-08-20) CLOSED http://python.org/sf/1012692 opened by Ronald L. Rivest xmlrpclib, PEP291, "yield" (2004-08-16) CLOSED http://python.org/sf/1009803 reopened by anthonybaxter Python Tutorial 3.1.4 List example (2004-08-20) CLOSED http://python.org/sf/1013239 opened by Elizibeth Thompson Win XP DEP prevents Python call to 'C' DLL (2004-08-21) CLOSED http://python.org/sf/1013418 opened by ajhewitt xml.dom documentation omits createDocument, ...DocumentType (2004-08-21) http://python.org/sf/1013525 opened by Mike Brown Error in Chapter 4 of Tutorial (2004-08-22) CLOSED http://python.org/sf/1013760 opened by Alexey Peshehonov No documentation for PyFunction_* (C-Api) (2004-08-22) http://python.org/sf/1013800 opened by Henning Günther tarfile.open with mode w|bz2 (2004-08-22) CLOSED http://python.org/sf/1013882 opened by Felix Wiemann Error in representation of complex numbers (2004-08-22) CLOSED http://python.org/sf/1013908 opened by Raymond Hettinger mimetypes add_type has bogus self parameter (2004-08-22) http://python.org/sf/1014022 opened by Cliff Wells Unspecific errors with metaclass (2004-08-23) http://python.org/sf/1014215 opened by Thomas Heller optparse: parser.remove_option("-h") inconsistency (2004-08-23) http://python.org/sf/1014230 opened by strop Missing urllib.urlretrieve docs (2004-08-23) http://python.org/sf/1014761 opened by David Abrahams Misc/NEWS no valid reStructuredText (2004-08-24) http://python.org/sf/1014770 opened by Felix Wiemann Misc/NEWS.help (2004-08-24) http://python.org/sf/1014775 opened by Felix Wiemann "article id" in description of NNTP objects (2004-08-24) http://python.org/sf/1015140 opened by Felix Wiemann cgi.FieldStorage.__len__ eventually throws TypeError (2004-08-24) http://python.org/sf/1015249 opened by Andreas Ames Create cgi.FieldStorage._get_new_instance method as factory (2004-08-24) http://python.org/sf/1015254 opened by Andreas Ames readline broken (2004-08-24) CLOSED http://python.org/sf/1015517 opened by Walter Dörwald Bugs Closed ___________ dictionary referencing error (2004-08-19) http://python.org/sf/1012249 closed by rhettinger weakref.WeakValueDictionary should override .has_key() (2004-08-19) http://python.org/sf/1012315 closed by rhettinger str.join([ str-subtype-instance ]) misbehaves (2004-07-30) http://python.org/sf/1001011 closed by rhettinger compile errors on _codecs_iso2022.c (2004-08-09) http://python.org/sf/1005737 closed by perky SGI (IRIX 6.5.24) Error building _codecs_iso2022.c (2004-08-11) http://python.org/sf/1007249 closed by perky Warning in cjkcodecs/iso2022common.h (2004-07-16) http://python.org/sf/991834 closed by perky test_queue fails occasionally (2004-08-17) http://python.org/sf/1010777 closed by mwh Can't pipe input to a python program (2004-08-20) http://python.org/sf/1012692 closed by tim_one xmlrpclib, PEP291, "yield" (2004-08-16) http://python.org/sf/1009803 closed by loewis xmlrpclib, PEP291, "yield" (2004-08-16) http://python.org/sf/1009803 closed by loewis logging.getLevelName returns a number (2004-08-12) http://python.org/sf/1008295 closed by vsajip Python Tutorial 3.1.4 List example (2004-08-21) http://python.org/sf/1013239 closed by perky optparse indents without respect to $COLUMNS (2004-01-16) http://python.org/sf/878453 closed by jlgijsbers Win XP DEP prevents Python call to 'C' DLL (2004-08-21) http://python.org/sf/1013418 closed by loewis Index entries with "_" are wrong in pdf file (2004-08-09) http://python.org/sf/1005936 closed by nnorwitz xmlrpclib and backward compatibility (2003-11-15) http://python.org/sf/842600 closed by loewis Error in Chapter 4 of Tutorial (2004-08-22) http://python.org/sf/1013760 closed by rhettinger tarfile.open with mode w|bz2 (2004-08-22) http://python.org/sf/1013882 closed by loewis Error in representation of complex numbers (2004-08-22) http://python.org/sf/1013908 closed by loewis Cmd in thread segfaults after Ctrl-C (2004-06-06) http://python.org/sf/967334 closed by mwh 2.3.4 fails build on solaris 10 - complexobject.c (2004-06-10) http://python.org/sf/970334 closed by mwh readline broken (2004-08-24) http://python.org/sf/1015517 closed by nnorwitz New / Reopened RFE __________________ Standard exceptions are hostile to Unicode (2004-08-20) http://python.org/sf/1012952 opened by Marius Gedminas

1 0

Need double-check on patch for bug #991962 (--disable-toolbox-glue compile on OS X)
by Brett C. Aug. 24, 2004

Aug. 24, 2004

Finally got around to writing up a quick patch for setup.py to not compile OS X-specific modules if the build is configured for --disable-toolbox-glue (would always have the Mac modules fail to build thanks to link errors if the toolbox glue was not compiled). But since I hardly ever play with the build process and the last thing I want to do is break it I would appreciate someone taking a quick look at this (changed two 'if' statements so it's small). And this is an indirect request to Anthony to bump the priority. =) -Brett

1 0

sre.py backward compatibility and PEP 291
by Barry Warsaw Aug. 24, 2004

Aug. 24, 2004

PEP 291 says that sre.py needs to be backward compatible with Python 2.1. sre.py says: # this module works under 1.5.2 and later. don't use string methods import string Which is it? Raymond has seen some circular reference problems between my PEP 292 string.py patch and re.py (really, by way of sre.py and friends). Even though I haven't seen the same problems, I'd like to avoid any direct circular references by changing the few string module function calls in sre*.py to string methods. But the comment above stopped me, until I read PEP 291. The PEP should be the definitive answer, and I'm willing to string-meth-ify sre*.py, if there are no objections. out-posting-phillip-ly y'rs, -Barry

3 3

Important decorator proposal on c.l.p.
by Robert Brewer Aug. 24, 2004

Aug. 24, 2004

In case it wasn't made clear earlier, there's an effort being made to propose an alternative to the current @decorator syntax before 2.4 hits beta. For everyone's sanity, that discussion is going on wholly on comp.lang.python. I figured I'd mention it to those of you who don't read clp on a regular basis--I should have done so earlier. You can find the initial announcement at http://groups.google.com/groups?th=c62eba24231bc2fb if you are interested in contributing/commenting. But hurry! Deadlines loom. Robert Brewer MIS Amor Ministries fumanchu(a)amor.org

1 0

RE: [Python-Dev] Re: [Python-checkins] python/nondist/peps pep-0318.txt, 1.25, 1.26
by Robert Brewer Aug. 24, 2004

Aug. 24, 2004

Skip Montanaro (I think) wrote: > List some possible reasons why arriving at consensus about decorators > has been so hard (or impossible) to acheive. There are certainly more. First reaction: Each proposal, by its very syntax, suggested a range of non-decorator use cases and semantics. Unfortunately, we have dozens of syntax proposals with "ranges of implication" which do not overlap, and therefore cannot be evaluated fairly (very little "apples to apples" comparison). Most of the remaining discussions addressed Beauty, Fear, Magic, or Intuition, which take more effort and space to analyze properly than your typical Usenet post allows. Robert Brewer MIS Amor Ministries fumanchu(a)amor.org

1 0

Re: [Python-Dev] Re: Update PEP 292
by Anders J. Munch Aug. 24, 2004

Aug. 24, 2004

>From Brett C. [mailto:bac@OCF.Berkeley.EDU] > > That is coming down to a question of convenience compared to > explicitness. Do we want "Give me $1,000,000 now!" to raise > ValueError, > or do we want to let it pass through? This particular problem has been considered and decided on years ago, in the context of %-interpolation: >>> "Give me %1,000,000 now!" % {} ValueError: unsupported format character ',' (0x2c) at index 10 String interpolation with named parameters given as a dictionary is a problem already solved in Python. I am puzzled at this urge to re-solve the same problem, only differently. If remembering to type the trailing s in "%(varname)s" is so much of a problem, why not extend the current interpolation syntax with a variation that is more convenient, yet still backwards-compatible? I would suggest a formatting-character-less version of "%(varname)s" that uses brackets instead: "%[varname]". dollar-signs?-we-don't-need-no-steenkin-dollar-signs-ly y'rs, Anders

2 1

Update PEP 292
by Barry Warsaw Aug. 24, 2004

Aug. 24, 2004

Raymond and I had a chance to talk about PEP 292 on bug day, and we've exchanged a few private emails and implementations. I think we've finally knocked everything into shape for inclusion in Python 2.4's next alpha. In the sandbox you will find the updated implementation, along with updated tests and documentation (libstring.tex). The updated PEP is at: http://www.python.org/peps/pep-0292.html A summary of the most important changes: * Renamed 'dstring' to 'template', and removed the other ?string classes * Added a 'safe_template' subclass for non KeyError-throwing substitutions * Got rid of safedicts; Raymond figured out the trick to retain optional braces in the safe substitution case without needing that class. * Renamed the 'cre' class attribute for subclasses to 'pattern' Now for the controversial bit <wink>. I still think it's worthwhile to turn the string module into a package. The sandbox has an implementation of this that is completely backward compatible. I like it because it segregates the deprecated functions into a separate sub-module and makes the whole shebang easier to maintain. It also provides an existing namespace for future expansion, as has been discussed before. Please note: PEP 292 is not dependent on the string module -> package reorganization, so it isn't documented in that PEP. I don't think it's worth writing a PEP just for this library reorganization. Take a look at the sandbox if you're interested. http://cvs.sourceforge.net/viewcvs.py/python/python/nondist/sandbox/string/ As far as this aspect of the changes go, I would like BDFL pronouncement on it. I'll abide by Guido's decision here. If he nixes the re-org, then I propose to put the template and safe_template classes in Lib/string.py. The libstring.tex changes will still be relevant. -Barry

14 62