Mailman 3 November 2000 - Python-Dev

Re: [Python-Dev] Revamping Python's Numeric Model
by Moshe Zadka Nov. 4, 2000

Nov. 4, 2000

> While I like the idea of having the numeric model in Python > based on a solid class hierarchy, I don't think that this model > is implementable in Python 2.x without giving away performance. I think they are, using a similar trick to Fred's automorphing dictionaries. > +1. > > I would like to see methods on Python numbers too (after having > made some really good experiences with methods on strings ;-). > There's one problem though: how would you call these on > … [View More]

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Revamping Python's Numeric Model
by Martin v. Loewis Nov. 4, 2000

Nov. 4, 2000

> Yes. 1.0 is not an exact number. What's wrong with that? > (Consider stuff like 0.333333333*3: this shouldn't be exact!) It's not inherently wrong. It just points out an omission in the PEP: it doesn't talk about the meaning of number literals. Since the new model is going to follow algebraic principles more closely, I had expected that 0.333333333 == 333333333 / 1000000000 where, as I understand the proposal, the right-hand side is an exact number (so 0.333333333*3 would be … [View More]

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Re: [Python-Dev] Revamping Python's Numeric Model
by Moshe Zadka Nov. 4, 2000

Nov. 4, 2000

[Moshe Zadka, about efficient and honest numbers] > I think they are, using a similar trick to Fred's automorphing dictionaries [MAL] > You mean numbers "morph" to become floats, complex numbers, etc. > on demand ? E.g. math.sqrt(-1) would return 1j ?! math.sqrt has been dealt elsewhere in the PEP. It has been suggested that math.foo will accept and return real numbers, and that cmath.foo will accept and return complex numbers. If you want to always deal with complex numbers, put … [View More]

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Re: [Python-Dev] Three argument slices.
by Michael Hudson Nov. 4, 2000

Nov. 4, 2000

bckfnn(a)worldonline.dk (Finn Bock) writes: > Hi, > > While updating the difference page in the Jython documentation, I > came across this: > > - JPython sequences support three argument slices. i.e. > range(3)[::-1] == [2,1,0]. > CPython should be fixed. > > Is this actually true? Should (and will cpython) change in this > respect? Well, there's a patch I wrote on sf to add this to CPython, but it was too late for 2.0 and it got postponed. Does J[P]… [View More]

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Re: [Python-Dev] Gathering Python 2.1 goals and non-goals
by Moshe Zadka Nov. 4, 2000

Nov. 4, 2000

> Moshe and Andrew (the impatient youth :-) have asked what's on our > plate for Python 2.1. Yeah, sure. They're not making enough fun of my age where I work, <wink>. > - Integer division. If we want to play by Paul Prescod's Language > Evolution rules (PEP 5), we better get started on the first stage. > E.g. we could introduce a // operator in 2.1 for integer division, > and issue a warning when / is used for integers. Then a year later > (i.e., March … [View More]

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Compiler warnings on Solaris
by Greg Ward Nov. 4, 2000

Nov. 4, 2000

Hi all -- since "-Wall -Wstrict-prototypes" were added to OPT by default, a bunch of warnings are showing up with GCC on Solaris. (I haven't seen them on Linux, so I assume this is OS-specific.) See PR#121479 for a complete list: https://sourceforge.net/bugs/?func=detailbug&bug_id=121479&group_id=5470) Is anyone else looking into these? Some of them are easy to fix, eg. cast char to int when using 'isalnum()' and friends. Some of them are easy but unnecessary -- eg. sham … [View More]

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2.1 tasks (Was: statically nested scopes)
by Martin v. Loewis Nov. 4, 2000

Nov. 4, 2000

> * Work on something CPAN-like. This may or may not have repercussions for > the core; I don't know. At a minimum, I think we need to include somethingCPANlike.py into the core (library) to make something CPAN-like useful. Regards, Martin

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build problems under Solaris
by Martin von Loewis Nov. 3, 2000

Nov. 3, 2000

> Text relocation remains referenced > against symbol offset in file [...] > I have no idea what's going on here. I've updated the bug report, > and I am definitely -1 on "gcc -shared" for GCC on Solaris! Unless, > of course, there are other linker options that make it work right... That happens only when using the system linker (/usr/ccs/bin/ld). The GNU linker won't complain, and the resulting executables will run fine. … [View More]

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New Wiki-based Python 2.0 Info Area
by Guido van Rossum Nov. 3, 2000

Nov. 3, 2000

At our PythonLabs group meeting last Tuesday we decided that we needed to set up a Patches page and a FAQ for Python 2.0. (This because we don't see a reason yet to issue a bugfix release, but we do need to answer some common questions and point people to some patches.) I figured that we could do ourselves a favor by making this a set of dynamic pages maintained wiki-style, rather than static pages (especially since I've managed to personally become the bottleneck for editing the static pages,… [View More]

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Re: [Python-checkins] CVS: python/dist/src/Lib/test/output test_unicodedata,1.3,1.4
by M.-A. Lemburg Nov. 3, 2000

Nov. 3, 2000

Fredrik Lundh wrote: > > Update of /cvsroot/python/python/dist/src/Lib/test/output > In directory slayer.i.sourceforge.net:/tmp/cvs-serv25791/lib/test/output > > Modified Files: > test_unicodedata > Log Message: > > Added 38,642 missing characters to the Unicode database (first-last > ranges) -- but thanks to the 2.0 compression scheme, this doesn't add > a single byte to the resulting binaries (!) > > Closes bug #117524 Cool :-) -- Marc-… [View More]

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