Mailman 3 June 2003 - Python-Dev

Re: [Python-checkins] python/dist/src/Lib pprint.py,1.24,1.25
by Fred L. Drake, Jr. 08 Jun '03

08 Jun '03

loewis(a)users.sourceforge.net writes: > Modified Files: > pprint.py > Log Message: > Patch #750542: Use issubclass instead of type identity. Hmm; this patch was never assigned to me, so I was unaware that anyone thought there was a problem with this. I specifically considered making changes like these when subclassing built-in types became possible, but decided against it since it didn't appear reasonable to assume that __repr__() hadn't been redefined. I'm sure it's possible to check, but to do so cleanly and efficiently seems like a huge change to the module for little value. I think the patch, as it stands, should be reverted. If another patch appears that addresses the issue of overridden __repr__() methods, it should be considered again. -1 for the patch as applied. -Fred -- Fred L. Drake, Jr. <fdrake at acm.org> PythonLabs at Zope Corporation

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Weekly Python Bug/Patch Summary
by Skip Montanaro 08 Jun '03

08 Jun '03

Bug/Patch Summary ----------------- 381 open / 3691 total bugs (+11) 151 open / 2195 total patches (+4) New Bugs -------- rfc2822 formatdate functionality duplication (2003-06-01) http://python.org/sf/747320 make test errors Tru64 UNIX V5.1A (2003-06-02) http://python.org/sf/747460 broken ncurses support in current cvs a last distribution (2003-06-04) http://python.org/sf/748926 last threads fixes broke linker (2003-06-04) http://python.org/sf/748928 bdist --formats=zip,wininst and bdist --formats=wininst,zip (2003-06-04) http://python.org/sf/749210 os.path.split does not handle . & .. properly (2003-06-04) http://python.org/sf/749261 strange __subclasses__ behaviour (2003-06-05) http://python.org/sf/749480 copy raises SystemError when getstate raises exception (2003-06-05) http://python.org/sf/749831 --enable-shared fails on Solaris 9 with gcc-3.2.3 (2003-06-05) http://python.org/sf/749911 exec documentation not updated (2003-06-06) http://python.org/sf/750092 Pickle fails to restore new-style class instance in a cycle (2003-06-06) http://python.org/sf/750328 event handling support (2003-06-06) http://python.org/sf/750423 New Patches ----------- BaseHTTPServer doesn't need StringIO intermediary (2003-06-02) http://python.org/sf/747364 Nails down the semantics of dict setitem (2003-06-03) http://python.org/sf/748126 Let Email.Utils.parsedate use last 3 timetuple items (2003-06-04) http://python.org/sf/748843 Describe formation of method objects more accurately (2003-06-04) http://python.org/sf/749012 allow UNIX mmap size to default to current file size (2003-06-05) http://python.org/sf/749830 'compiler' module bug with 'import foo.bar as baz' (2003-06-06) http://python.org/sf/750008 Closed Bugs ----------- Can't compile when using alt. thread lib when pthread avail. (2002-04-11) http://python.org/sf/542482 Configure does NOT set properly *FLAGS for thread support (2003-05-21) http://python.org/sf/741307 indentation error in unixcompiler.py (2003-06-01) http://python.org/sf/746953 Closed Patches -------------- Compiler warning on Solaris 8 (2003-04-28) http://python.org/sf/729305 SpawnedGenerator class for threading module (2003-05-02) http://python.org/sf/731701 Ordering of handlers in urllib2 (2003-05-24) http://python.org/sf/742823 FreeBSD 4 port of python-2.2.3... (2003-05-31) http://python.org/sf/746801

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The Python interpreter is not fully thread-safe.
by martin＠v.loewis.de 08 Jun '03

08 Jun '03

I'd like to replace the first sentence of 8.1 in the API reference with "The Python interpreter does not support \emph{free} threading." Any library that *is* "fully thread-safe" establishes certain conventions that users have to follow to achieve thread-safety. The same is true for Python: if the conventions (which are elaborated in section 8.1) are followed, Python is also fully thread-safe. It's just that it does not support what is commonly called "free threading". Any objections? Regards, Martin

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Re: [Python-Dev] urllib2 proxy support broken?
by Gustavo Niemeyer 07 Jun '03

07 Jun '03

> > I've just tried to use the proxy support in urllib2, and was surprised > > by the fact that it seems to be broken, at least in 2.2 and 2.3. Can > > somebody please confirm that it's really broken, so that I can prepare > > a patch? > > Ok.. I have prepared a simple fix for this, and sent it to SF patch > #742823. This fix should be backwards compatible, and at the same time > allows any kind of further customization of pre-defined and user-defined > classes. FWIW, I've applied the patch. Any tests with existing applications will be welcome. -- Gustavo Niemeyer [ 2AAC 7928 0FBF 0299 5EB5 60E2 2253 B29A 6664 3A0C ]

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Re: Re: Your application [#1607045]
by EBATES - Customer Care 07 Jun '03

07 Jun '03

Dear Valued Customer, Thank you for contacting Customer Care at Ebates. We have received your request and a Customer Care Associate will respond to you soon. Currently, our office is open Monday through Friday. We appreciate your patronage and look forward to assisting you. Sincerely, Customer Care Ebates ----- <python-dev python.org> Wrote ----- Please see the attached file. =========================================================================== WARNING: This e-mail has been altered by MIMEDefang. Following this paragraph are indications of the actual changes made. For more information about your site's MIMEDefang policy, contact Administrator <defang-admin(a)ebates.com>. For more information about MIMEDefang, see: http://www.roaringpenguin.com/mimedefang/enduser.php3 An attachment named "approved.pif was removed from this document as it constituted a security hazard. If you require this document, please contact the sender and arrange an alternate means of receiving it.

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MBSOPPRAPP02 found VIRUS= W32/Sobig-C (Sophos,Kaspersky,NAI,CA(In oculateIT),CA(Vet),Norman) virus
by ANTIGEN_MBSOPPRAPP02 04 Jun '03

04 Jun '03

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RE: Meaning of trailing comma?
by Chermside, Michael 04 Jun '03

04 Jun '03

Hello Roman: The list "python-dev" is not the correct place to ask questions like this. The list "python-list" (accessed as "python-list(a)python.org" is full of people (including me!) who'd be willing to answer your question, but "python-dev" is reserved for discussion of how to write the Python language itself, not how to USE python. Now that I've chastised you for mis-using the list I'll assume that you simply didn't realize what the list was for, and that it was an honest mistake, so let me answer the question. Have you ever (in any language) written something like this: myList = ( a, b, c, d ) ... then had to add a new item to the list: myList = ( a, b, c, d e ) ... and gotten a bug? (Look very carefully, and you'll find the bug.) Well, that's why Python allows the trailing comma. The only special case is a one-item tuple. Python has no good way to tell a one-item tuple apart from something that's just enclosed in parentheses (technically, that's because it's the comma not the parentheses that make the tuple), so it punts and goes with a not-so-good way: using a trailing comma makes it a one-item tuple. That's the only time the trailing comma ever matters; otherwise it's completely optional and used for cosmetic (and typo-avoidance) reasons only. -- Michael Chermside This email may contain confidential or privileged information. If you believe you have received the message in error, please notify the sender and delete the message without copying or disclosing it.

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Meaning of trailing comma?
by Roman Meisl 04 Jun '03

04 Jun '03

Hello, Following test ist possible (as far as I've understood the grammar) (a,b,) ^ What's the meaning of this comma? Does it make sense? In general, there are many rules with an optional comma (or semicolon) at the end, e. g.: fplist: fpdef (',' fpdef)* [','] exprlist: expr (',' expr)* [','] or testlist: test (',' test)* [','] So I ask myself why is this? By the way, the grammar mentioned in the online-help has very many errors, which leads to much confusion. Perhaps it should be exchanged by a correct one, shouldn't it? Or at least a hint or link to the correct one. Roman Meisl -- PGP-Key available Kontakt: http://www.mathematik.uni-marburg.de/~meisl/kontakt.html

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Re: timsort?
by Gareth McCaughan 04 Jun '03

04 Jun '03

Tim Peters wrote: > Note that we switched from doing two minor releases per year, to something > like one minor release per two years (2.2 was released in 2001!). timsort > is less than a year old, IIRC. Since it can raise MemoryError where the 2.2 > sort could not, and may compute different results on the same inputs, it was > much more a new feature than a bugfix. Remind me why raising MemoryError is better than punting and sorting the list some other way? -- Gareth McCaughan

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