libsndfile-python : python wrapper for libsndfile
Hi all, I am pleased to announce a release of a python wrapper for libsndfile. This is a re-installment of a previous version from Rob Melby (arcsin.org) with a numpy support. This a early beta release that worked fine for years using numpy and mostly intended for scientific applications. However I am not confident for non-macosx release. In addition libsndfile does not allow bundle building so the mpkg ships with its custom build of libsndfile. Consequently the source package should only works on Unixes. It is implied but libsndfile is needed : http://www.mega-nerd.com/libsndfile/ Please visit https://code.google.com/p/libsndfile-python/ for package information and https://code.google.com/p/libsndfile-python/downloads/list for available downloads. Help and feedback is really appreciated! Best, ./Ed -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
PyCon 2011 Reminder: Call for Proposals, Posters and Tutorials - us.pycon.org
PyCon 2011 Reminder: Call for Proposals, Posters and Tutorials - us.pycon.org === Well, it's October 25th! The leaves have turned and the deadline for submitting main-conference talk proposals expires in 7 days (November 1st, 2010)! We are currently accepting main conference talk proposals: http://us.pycon.org/2011/speaker/proposals/ Tutorial Proposals: http://us.pycon.org/2011/speaker/proposals/tutorials/ Poster Proposals: http://us.pycon.org/2011/speaker/posters/cfp/ PyCon 2011 will be held March 9th through the 17th, 2011 in Atlanta, Georgia. (Home of some of the best southern food you can possibly find on Earth!) The PyCon conference days will be March 11-13, preceded by two tutorial days (March 9-10), and followed by four days of development sprints (March 14-17). We are also proud to announce that we have booked our first Keynote speaker - Hilary Mason, her bio: Hilary is the lead scientist at bit.ly, where she is finding sense in vast data sets. She is a former computer science professor with a background in machine learning and data mining, has published numerous academic papers, and regularly releases code on her personal site, http://www.hilarymason.com/. She has discovered two new species, loves to bake cookies, and asks way too many questions. We're really looking forward to having her this year as a keynote speaker! Remember, we've also added an Extreme talk track this year - no introduction, no fluff - only the pure technical meat! For more information on Extreme Talks see: http://us.pycon.org/2011/speaker/extreme/ We look forward to seeing you in Atlanta! Please also note - registration for PyCon 2011 will also be capped at a maximum of 1,500 delegates, including speakers. When registration opens (soon), you're going to want to make sure you register early! Speakers with accepted talks will have a guaranteed slot. We have published all registration prices online at: http://us.pycon.org/2011/tickets/ Important Dates November 1st, 2010: Talk proposals due. December 15th, 2010: Acceptance emails sent. January 19th, 2011: Early bird registration closes. March 9-10th, 2011: Tutorial days at PyCon. March 11-13th, 2011: PyCon main conference. March 14-17th, 2011: PyCon sprints days. Contact Emails: Van Lindberg (Conference Chair) - v...@python.org Jesse Noller (Co-Chair) - jnol...@python.org PyCon Organizers list: pycon-organiz...@python.org -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Django course in Leipzig, Germany, Nov. 29 - Dec. 1, 2010 (in German)
The course will be taught in German. Therefore, the announcement is also in German. Kurs: Django Python-Web-Framework = Kurzinfo Vom 29.11. bis zum 01.12.2010 findet ein Kurs zu Django[1] mit dem Trainer Markus Zapke-Gründemann[2] an der Python Academy in Leipzig statt. Weitere Informationen: http://www.python-academy.de/Kurse/django_kurs.html Gleich zur Anmeldung: http://www.python-academy.de/Kurse/termine.html Zielgruppe -- Der Kurs richtet sich sowohl an Neueinsteiger als auch an Programmierer, die schon erste Erfahrungen mit Django[1] gesammelt haben. Sie sollten Erfahrungen in einer objektorientierten Programmiersprache haben. Dabei sind Kenntnisse in Python gut, aber für den Anfang nicht zwingend notwendig. Außerdem sollten sie mit der Entwicklung von Webapplikationen in Verbindung mit Datenbanken vertraut sein. Inhalt -- Nach einer Einführung in die Grundlagen des Web Application Frameworks Django wird jeder Teilnehmer Django selbst installieren. Danach beginnt die Entwicklung einer ersten, einfachen Applikation. Bei der folgenden Weiterentwicklung der Applikation wird das Wissen über die benutzen Komponenten weiter vertieft. - Einsatz von Werkzeugen zur Softwareentwicklung - Datenbankabstraktion (Object Relational Mapper) - Komplexe Models - Einbindung bestehender Datenbanken - Nutzung von mehreren Datenbanken - Export und Import von Daten (via JSON) - Arbeit mit dem ORM an der Kommandozeile - Anpassung des Admin Backends - Generische Views - Eigene Template Tags und Filter - Formulare und Validierung - Sessionverwaltung - Authentifizierung - RSS Feed - PDF Erzeugung - Funktionale und Unit Tests Weitere Themen gerne auf Anfrage, zum Beispiel: - AJAX - RESTful Webservice - Authentifizierung über andere Dienste - Internationalization - Security - Caching - Deployment - Migration Referent Markus Zapke-Gründemann[2] kann auf neun Jahre Erfahrung in der Softwareentwicklung zurückblicken und arbeitet seit fast zwei Jahren als selbständiger Softwareentwickler, Consultant und Trainer. Schwerpunkt seiner Arbeit ist die Entwicklung von Web Applikationen für Intra- und Internet mit verschiedenen Frameworks. Kursmaterialien --- Jeder Teilnehmer erhält ausführliche Kursunterlagen mit ausformulierten Beschreibungen der Kursinhalte und eine CD mit allen verwendeten Quelltexten und genutzter Software. [1] http://www.djangoproject.com [2] http://www.keimlink.de -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Pogo 0.2
I am proud to announce the first release of Pogo, probably the simplest and fastest audio player for Linux. You can get the tarball and an Ubuntu deb package at http://launchpad.net/pogo What is Pogo? Pogo plays your music. Nothing else. It tries to be fast and easy-to-use. Pogo's elementary-inspired design uses the screen-space very efficiently. It is especially well-suited for people who organize their music by albums on the harddrive. The main interface components are a directory tree and a playlist that groups albums in an innovative way. Pogo is a fork of Decibel Audio Player. Supported file formats include Ogg Vorbis, MP3, FLAC, Musepack, Wavpack, and MPEG-4 AAC. Pogo is written in Python and uses GTK and gstreamer. What's new in 0.2 I hold the candle while you dance upon the flame (2010-10-21) * Make startup even faster by saving the playlist with its formatting * Make track drag'n'drop faster by caching the tracks * MPRIS support: Send DBus messages about play events (code from decibel) * Do some profiling to improve general speed * Append files added on commandline (pogo mytrack.mp3 myalbum myothertrack.mp3) * Append files added from nautilus right-click menu * Correctly add multiply nested directories * Activate the Covers and Notifications modules by default * Hide volume button (Only duplicates functionality of the Sound Indicator) * Updated Translations Cheers, Jendrik -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: Unix-head needs to Windows-ize his Python script (II)
In message mailman.208.1287970911.2218.python-l...@python.org, MRAB wrote: On 25/10/2010 02:19, Lawrence D'Oliveiro wrote: In messagemailman.187.1287916654.2218.python-l...@python.org, Dave Angel wrote: No. GUI programs are marked as win-app, so w stands for Windows. Non GUI programs run in the console. You mean “GUI console”. So non-GUI apps get a GUI element whether they want it or not, while GUI ones don’t. That’s completely backwards. No, it's not. The fact that the console is also a GUI window is an implementation detail ... It is not an implementation detail. It is intrinsic to the way Windows works. No other OS does it backwards like this. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
In message mailman.216.1287980107.2218.python-l...@python.org, Steve Holden wrote: and, in fact, the console is only a GUI window in a windowed system. It might be one of the console emulation windows that init starts under linux, or even a terminal connected to a computer by a serila line, for heavens sake. But now you’re no longer talking about Windows. Windows is the only one that gets it backwards like this, forcing the creation of GUI elements for non- GUI-based programs, and not for GUI-based ones. More reasonably-designed systems, such as you describe above, make no such distinction between “GUI” and “non-GUI” programs. There is no difference based on the name of your executable, how it is built, or what libraries it links to; the only difference is in its run-time behaviour, whether it invokes any GUI functions or not. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On Mon, 2010-10-25, bruno.desthuilli...@gmail.com wrote: On 25 oct, 15:34, Alex Willmer a...@moreati.org.uk wrote: On Oct 25, 11:07 am, kj no.em...@please.post wrote: In The Zen of Python, one of the maxims is flat is better than nested? Why? Can anyone give me a concrete example that illustrates this point? I take this as a reference to the layout of the Python standard library and other packages i.e. it's better to have a module hierarchy of depth 1 or 2 and many top level items, than a depth of 5+ and only a few top level items. (snip) This also applies to inheritance hierarchies (which tend to be rather flat in Python compared to most mainstreams OOPLs), as well as nested classes etc. Which mainstream languages are you thinking of? Java? Because C++ is as flat as Python. /Jorgen -- // Jorgen Grahn grahn@ Oo o. . . \X/ snipabacken.se O o . -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
On 10/26/2010 2:08 AM, Lawrence D'Oliveiro wrote: In message mailman.208.1287970911.2218.python-l...@python.org, MRAB wrote: On 25/10/2010 02:19, Lawrence D'Oliveiro wrote: In messagemailman.187.1287916654.2218.python-l...@python.org, Dave Angel wrote: No. GUI programs are marked as win-app, so w stands for Windows. Non GUI programs run in the console. You mean “GUI console”. So non-GUI apps get a GUI element whether they want it or not, while GUI ones don’t. That’s completely backwards. No, it's not. The fact that the console is also a GUI window is an implementation detail ... It is not an implementation detail. It is intrinsic to the way Windows works. No other OS does it backwards like this. I really don't understand what you are trying to say here. Could you please explain? I know you to be a capable and sensible person, but this sounds like nonsense to me, so I must be misunderstanding. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon 2011 Atlanta March 9-17 http://us.pycon.org/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Help Need in running a Python Program from terminal
Greetings Philip ! File openastro.py, line 90, in module TRANSLATION[LANGUAGES[i]] = gettext.translation(openastro,TDomain,languages=['en']) File /usr/lib/python2.6/gettext.py, line 484, in translation raise IOError(ENOENT, 'No translation file found for domain', domain) IOError: [Errno 2] No translation file found for domain: 'openastro' Hi Raji, Did you have a look at the documentation for the call that's failing? Here's the doc for gettext.translation(): http://docs.python.org/library/gettext.html#gettext.translation I don't know anything about gettext or openastro, but the doc says, If no .mo file is found, this function raises IOError... which is the problem you're having. It seems like what you downloaded is expecting to find a .mo file but can't. You might want to check the package instructions on openastro.org to make sure there's not more you need to do to install it. You are right. The .mo file is present in /openastro.org-1.1.23.orig/locale/en/LC_MESSAGES But it cant find it. Thanks for the information Im looking towards to correct the error -- Regards Raji http://sraji.wordpress.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On Oct 25, 11:20 pm, Jorgen Grahn grahn+n...@snipabacken.se wrote: On Mon, 2010-10-25, bruno.desthuilli...@gmail.com wrote: On 25 oct, 15:34, Alex Willmer a...@moreati.org.uk wrote: On Oct 25, 11:07 am, kj no.em...@please.post wrote: In The Zen of Python, one of the maxims is flat is better than nested? Why? Can anyone give me a concrete example that illustrates this point? I take this as a reference to the layout of the Python standard library and other packages i.e. it's better to have a module hierarchy of depth 1 or 2 and many top level items, than a depth of 5+ and only a few top level items. (snip) This also applies to inheritance hierarchies (which tend to be rather flat in Python compared to most mainstreams OOPLs), as well as nested classes etc. Which mainstream languages are you thinking of? Java? Because C++ is as flat as Python. Not in my experience. The only way to get dynamic polymorphism (as opposed to the static polymorphism you get with templates) in C++ is to use inheritance, so when you have a class library in C++ you tend to get hierarchies where classes with all kinds of abstract base classes so that types can be polymorphic. In Python you don't need abstract base classes so libraries tend to be flatter, only inheriting when behavior is shared. However it's not really that big of a difference. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
Re: Descriptors and decorators
On 25 oct, 17:18, Joost Molenaar j.j.molen...@gmail.com wrote:
Thanks, Bruno.
Your python-wiki page and walk-through for the Decorator code make it
clear. I now finally understand that methods are in fact ordinary
functions at the time the class is created, and that the descriptor
protocol turns them into bound or unbound methods when they're
accessed as attributes:
(snip)
Cheers! Now I will try to wrap my brain around metaclasses and coroutines. ;-)
Metaclasses are nothing special, really. Python classes are plain
objects and you can as well instanciate a class directly - the class
statement being mostly syntactic sugar:
def func(obj, x):
obj.x = x
NewClass = type(NewClass, (object,), {'__init__':func, 'foo':lambda
z: z.x + 2})
So in the end, a metaclass is just another plain class, that is used
to instanciate class objects.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python3: Is this a bug in urllib?
'''
C:\Documents and Settings\Administrator\Desktoppython wtf.py
301 Moved Permanently
b'HTMLHEADmeta http-equiv=content-type content=text/
html;charset=utf-8
\nTITLE301 Moved/TITLE/HEADBODY\nH1301 Moved/H1\nThe
document has mo
ved\nA HREF=http://www.google.de/;here/A.\r\n/BODY/HTML\r\n'
foo 5.328 secs
301 Moved Permanently
bar 241.016 secs
C:\Documents and Settings\Administrator\Desktop
'''
import http.client
import time
def foo():
c = http.client.HTTPConnection('google.de')
try:
c.request('GET', '/')
r = c.getresponse()
try:
print(r.status, r.reason)
x = r.read()
finally: r.close()
finally: c.close()
print(x)
def bar():
c = http.client.HTTPConnection('google.de')
try:
c.request('GET', '/')
r = c.getresponse()
try:
print(r.status, r.reason)
x = r.fp.read()
finally: r.fp.close()
finally: c.close()
s = time.time()
foo()
e = time.time()
print('foo %.3f secs' % (e-s,))
s = time.time()
bar()
e = time.time()
print('bar %.3f secs' % (e-s,))
--
http://mail.python.org/mailman/listinfo/python-list
Re: downcasting problem
John Nagle na...@animats.com writes: On 10/25/2010 7:38 AM, Tim Chase wrote: While a dirty hack for which I'd tend to smack anybody who used it...you *can* assign to instance.__class__ That's an implementation detail of CPython. May not work in IronPython, Unladen Swallow, PyPy, or Shed Skin. (An implementation with a JIT has to trap stores into some internal variables and invalidate the generated code. This adds considerable complexity to the virtual machine. Java JVMs, for example, don't have to support that.) A Python implementation probably looks up attributes via type late at runtime anyway, so modifying __class__ boils down to changing a reference inside the (moral equivalent of the) PyObject structure. For example, assigning to __class__ appears to work just fine in Jython 2.5.2: Jython 2.5.2rc2 (Release_2_5_2rc2:7167, Oct 24 2010, 22:48:30) [OpenJDK 64-Bit Server VM (Sun Microsystems Inc.)] on java1.6.0_18 Type help, copyright, credits or license for more information. class X(object): ... pass ... class Y(X): pass ... x = X() x.__class__ = Y x __main__.Y object at 0x3 -- http://mail.python.org/mailman/listinfo/python-list
is list comprehension necessary?
recently wrote a article based on a debate here. (can't find the
original thread on Google at the moment)
• 〈What's List Comprehension and Why is it Harmful?〉
http://xahlee.org/comp/list_comprehension.html
it hit reddit.
http://www.reddit.com/r/programming/comments/dw8op/whats_list_comprehension_and_why_is_it_harmful/
though, i don't find the argument there informative.
For python, i can understand that it might be preferred, due to the
special syntax, being more in sync with python because of the
imperative hints in keywords. (e.g. those “for”, “if” in it.) But for
more pure functional lang (e.g. haskell), i think lc is pretty bad.
here's the plain text version of my essay
What's List Comprehension and Why is it Harmful?
Xah Lee, 2010-10-14
This page explains what is List Comprehension, with examples from
several languages, with my opinion on why the jargon and concept of
“list comprehension” are unnecessary, and harmful to functional
programing.
What is List Comprehension?
Here's a example of List Comprehension (LC) in python:
S = [2*n for n in range(0,9) if ( (n % 2) == 0)]
print S
# prints [0, 4, 8, 12, 16]
It generates a list from 0 to 9 by 「range(0,9)」, then remove the odd
numbers by 「( (n % 2) == 0)」, then multiply each element by 2 in
「2*n」, then returns a list.
Python's LC syntax has this form:
[myExpression for myVar in myList if myPredicateExpression]
In summary, it is a special syntax for generating a list, and allows
programers to also filter and apply a function to the list, but all
done using expressions.
In functional notation, list comprehension is doing this:
map( f, filter(list, predicate))
Other languages's LC are similiar. Here are some examples from
Wikipedia. In the following, the filter used is 「x^2 3」, and the
「2*x」 is applied to the result.
Haskell
s = [ 2*x | x - [0..], x^2 3 ]
F#
seq { for x in 0..100 do if x*x 3 then yield 2*x } ;;
OCaml
[? 2 * x | x - 0 -- max_int ; x * x 3 ?];;
Clojure
(take 20 (for [x (iterate inc 0) :when ( (* x x) 3)] (* 2 x)))
Common Lisp
(loop for x from 1 to 20 when ( (* x x) 3) collect (* 2 x))
Erlang
S = [2*X || X - lists:seq(0,100), X*X 3].
Scala
val s = for (x - Stream.from(0); if x*x 3) yield 2*x
Here's how Wikipedia explains List comprehension. Quote:
A list comprehension is a syntactic construct available in some
programming languages for creating a list based on existing lists.
The following features makes up LC:
* (1) A flat list generator, with the ability to do filtering and
applying a function.
* (2) A special syntax in the language.
* (3) The syntax uses expressions, not functions.
Why is List Comprehension Harmful?
• List Comprehension is a opaque jargon; It hampers communication, and
encourage mis-understanding.
• List Comprehension is a redundant concept in programing. It is a
very simple list generator. It can be easily expressed in existing
functional form 「map(func, filter(list, predicate))」 or imperative
form e.g. perl: 「for (0..9) { if ( ($_ % 2) == 0) {push @result,
$_*2 }}」.
• The special syntax of List Comprehension as it exists in many langs,
are not necessary. If a special purpose function is preferred, then it
can simply be a plain function, e.g 「LC(function, list, predicate)」.
Map + Filter = List Comprehension Semantics
The LC's semantics is not necessary. A better way and more in sync
with functional lang spirit, is simply to combine plain functions:
map( f, filter(list, predicate))
Here's the python syntax:
map(lambda x: 2*x , filter( lambda x:x%2==0, range(9) ) )
# result is [0, 4, 8, 12, 16]
In Mathematica, this can be written as:
Map[ #*2 , select[ra...@9, EvenQ]]
In Mathematica, arithemetic operations can be applied to list
directely without using Map explicitly, so the above can be written
as:
select[ra...@9, EvenQ] * 2
in my coding style, i usually write it in the following syntactically
equivalent forms:
(#*2 ) @ (Select[#, EvenQ]) @ Range @ 9
or
9 // Range // (Select[#, EvenQ]) // (#*2 )
In the above, we sequence functions together, as in unix pipe. We
start with 9, then apply “Range” to it to get a list from 1 to 9, then
apply a function that filters out odd numbers, then we apply a
function to multiply each number by 2. The “//” sign is a postfix
notation, analogous to bash's “|”, and �...@” is a prefix notation that's
the reverse of “|”.
(See: Short Intro of Mathematica For Lisp Programers.)
List Comprehension Function Without Special Syntax
Suppose we want some “list comprehension” feature in a functional
lang. Normally, by default this can be done by
map(func, filter(inputList, Predicate))
but perhaps this usage is so frequent that we want to create a new
function for it, to make it more convenient, and perhaps easier to
make the compiler to optimize more. e.g.
LC(func, inputList, Predicate)
this is about whether a lang should create a new convenient function
that otherwise require 3 function
Re: time difference interms of day
Steve Holden wrote: On 10/24/2010 1:55 PM, mukkera harsha wrote: Hello I was wondering if there is an existing function that would let me determine the difference in time. To explain: Upon starting a program: startup = time.time() After some very long processing: now = time.time() On, doing now - startup I want the program to return in terms of days. How ? Thanks, Harsha. You'd probably be better off using the datetime module. That way you can store datetime.datetime.now() at the start of your run and subtract datetime.datetime.now() at the end, giving you a datetime.delta object which contains days, seconds and microseconds: import datetime t1 = datetime.datetime.now() [waited a while] t2 = datetime.datetime.now() t2-t1 datetime.timedelta(0, 16, 509000) Or using mxDateTime: from mx import DateTime start = DateTime.now() stop = DateTime.now() print stop - start 00:00:04.26 http://www.egenix.com/products/python/mxBase/mxDateTime/ -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Oct 26 2010) Python/Zope Consulting and Support ...http://www.egenix.com/ mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ mxODBC, mxDateTime, mxTextTools ...http://python.egenix.com/ ::: Try our new mxODBC.Connect Python Database Interface for free ! eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
On Tue, 26 Oct 2010 02:38:43 -0400, Steve Holden wrote: I really don't understand what you are trying to say here. Could you please explain? I know you to be a capable and sensible person, but this sounds like nonsense to me, so I must be misunderstanding. I think he's saying that on a Linux desktop, if you define a launcher for an application the default assumption is that its a graphical application. If so, all you need to do is to tell the launcher the program name, what icon to use and what text to put under it. If the application isn't graphical, you do the same as above and also tell the launcher that the program must run in a console window. Simple. Logical. Concise. I assume that what I've just described applies to OS X and virtually all other graphical desktops: I wouldn't know from personal experience because I don't use them. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
In mailman.241.1288036400.2218.python-l...@python.org Terry Reedy tjre...@udel.edu writes: On 10/25/2010 3:11 PM, kj wrote: Well, it's pretty *enshrined*, wouldn't you say? No. After all, it is part of the standard distribution, So is 'import antigravity' Are you playing with my feelings? % python Python 2.6.1 (r261:67515, Feb 11 2010, 00:51:29) [GCC 4.2.1 (Apple Inc. build 5646)] on darwin import antigravity Traceback (most recent call last): File stdin, line 1, in module ImportError: No module named antigravity Too bad, I was looking forward to that. has an easy-to-remember invocation, etc. *Someone* must have taken it seriously enough to go through all this bother. If it is as trivial as you suggest (and for all I know you're absolutely right), then let's knock it off its pedestal once and for all, and remove it from the standard distribution. If you are being serious, you are being too serious (as in humorless). Guilty as charged, both in the too serious and the humorless counts. :/ Blame it on the Asperger's. My only defense is that, while learning Python over the past year, I've had *many* you've got to be joking moments while reading what's ostensible serious Python documents (e.g. PEP 8, PEP 257) as well as assorted threads featuring GvR and others involved in the design of Python, to the point that sometimes I do have a hard time gauging the seriousness of what's considered good programming / best practice in the Python world. Plus, I think it's fair to say that the Python community as a whole (or at least its more vocal members) are more concerned with correctness (for lack of a better term) and code aesthetics than, say, the Perl community. E.g., only in Python-related threads I've seen the adjective icky used routinely to indicate that some code is unacceptable on (more or less) aesthetic grounds. My point is that, even if one detects some levity in ZoP, given everything else one runs into in the Python world, for the uninitiated like me it is still hard to distinguish between what's in jest and what's in earnest. Perhaps the disconnect here is that you're seeing the whole thing from an insider's point of view, while I'm still enough of an outsider not to share this point of view. (I happen to think that one the hallmarks of being an initiate to a discipline is an almost complete loss of any memory of what that discipline looked like when the person was a complete novice. If this is true, then it's easy to understand the difference in our perceptions.) Anyway, thanks for letting me in on the joke. I'll pass it on. (Though, humorless as it is of me, I still would prefer the ZoP out of the standard library, to save myself having to tell those who are even newer to Python than me not to take it seriously.) ~kj -- http://mail.python.org/mailman/listinfo/python-list
Re: Inconsistent results from int(floatNumber)
On Oct 25, 5:44 pm, gershar gerrys...@gmail.com wrote: I had some problems with some Python projects that gave variable results that I could not track down. Eventually and reluctantly I converted them to Java. Later, when I had more time I tried to analyze what the Python code was doing and found something strange. The following snippet illustrates the problem. i = -50.0 for x in xrange(5): i += 0.1 z = i * 10.0 print print z print int(z) -499.0 -499 -498.0 -498 -497.0 -496 -496.0 -495 -495.0 -494 The first two iterations look OK but after that the int(z) function returns the wrong value. It looks like the value was rounded down. If a just do this: int(-497.0) -497 I get the value I expect. So what is the problem? It looks like a rounding problem but on the surface there is nothing to round. I am aware that there are rounding limitations with floating point arithmetic but the value passed to int() is always correct. What would cause it to be off by 1 full digit in only some cases? Perhaps something behind the scenes in the bowels of the interpreter ?. I could not get the thing to fail without being inside the for loop; does that have something to do with it? To fix the problem I could use round() or math.floor(). Like this. i = -50.0 for x in xrange(5): i += 0.1 z = i * 10.0 print print z print(round(z)) -499.0 -499.0 -498.0 -498.0 -497.0 -497.0 -496.0 -496.0 -495.0 -495.0 Why should I have to do this? Is there a general rule of thumb to know when this could be a problem? Should any float-to-int conversion be suspect? The above code was run in Python 2.5.4 on WinXP and Python 2.6.2 on Linux(Fedora12) Can anyone verify if this would be the same on 3.x? Good responses from this group! Thanks for the insight Regards -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On Tue, Oct 26, 2010 at 9:05 AM, kj no.em...@please.post wrote: In mailman.241.1288036400.2218.python-l...@python.org Terry Reedy tjre...@udel.edu writes: On 10/25/2010 3:11 PM, kj wrote: Well, it's pretty *enshrined*, wouldn't you say? No. After all, it is part of the standard distribution, So is 'import antigravity' Are you playing with my feelings? % python Python 2.6.1 (r261:67515, Feb 11 2010, 00:51:29) [GCC 4.2.1 (Apple Inc. build 5646)] on darwin import antigravity Traceback (most recent call last): File stdin, line 1, in module ImportError: No module named antigravity Too bad, I was looking forward to that. Try it in Python 3. has an easy-to-remember invocation, etc. *Someone* must have taken it seriously enough to go through all this bother. If it is as trivial as you suggest (and for all I know you're absolutely right), then let's knock it off its pedestal once and for all, and remove it from the standard distribution. If you are being serious, you are being too serious (as in humorless). Guilty as charged, both in the too serious and the humorless counts. :/ Blame it on the Asperger's. My only defense is that, while learning Python over the past year, I've had *many* you've got to be joking moments while reading what's ostensible serious Python documents (e.g. PEP 8, PEP 257) as well as assorted threads featuring GvR and others involved in the design of Python, to the point that sometimes I do have a hard time gauging the seriousness of what's considered good programming / best practice in the Python world. This is a programming language named after a British comedy group (not the snake). There are going to be jokes inserted in lots of otherwise serious things. Like the standard library. http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Generating PDF file in Python
I need to generate PDF files and I'm exploring what tools to use. I was planing on using ReportLab, but recently found some references to pango (http://www.pango.org/) and ciaro (http://cairographics.org/) being able to generate PDF files. But am having difficulty finding details. The program must be cross platform, it needs to run on both windows and Mac and might need to run on Linux in the future. It needs to generate both reports and tables and I would like to make the layout as user configurable as practical. Can pango - ciaro do this. How do they compare to ReportLab? Are there other options I have overlooked? -EdK Ed Keith e_...@yahoo.com Blog: edkeith.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 2010-10-26, kj no.em...@please.post wrote: (Though, humorless as it is of me, I still would prefer the ZoP out of the standard library, to save myself having to tell those who are even newer to Python than me not to take it seriously.) Well, not to take it *too* seriously. It's like any other Zen -- it's wonderful as long as you take it about the right amount seriously. If someone could tell you how seriously that is, it wouldn't be Zen. -s -- Copyright 2010, all wrongs reversed. Peter Seebach / usenet-nos...@seebs.net http://www.seebs.net/log/ -- lawsuits, religion, and funny pictures http://en.wikipedia.org/wiki/Fair_Game_(Scientology) -- get educated! I am not speaking for my employer, although they do rent some of my opinions. -- http://mail.python.org/mailman/listinfo/python-list
Re: minimal D: need software testers
[posted e-mailed] In article 43bd55e3-e924-40b5-a157-b57ac8544...@f25g2000yqc.googlegroups.com, Kruptein darragh@gmail.com wrote: I've released the second alpha for minimal-D a program I've written in python which should make developing easier. I need people to test the app on bugs and give ideas. You should probably explain what minimal-D is, I'm certainly not going to look at something when I have no clue. -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ If you think it's expensive to hire a professional to do the job, wait until you hire an amateur. --Red Adair -- http://mail.python.org/mailman/listinfo/python-list
Re: Introducing Kids to Programming: 2 or 3?
[posted e-mailed] [chiming in late] In article mailman.1095.1285602516.29448.python-l...@python.org, Marco Gallotta ma...@gallotta.co.za wrote: I'm sure you get a lot of 2 or 3 questions, but here's another. Umonya [1] uses Python to introduce school kids to programming. The initiative is only 15 months old and up till now we've been using existing notes and exercises and thus Python 2. But we're at the stage where we can either stick with 2 for the next few years, or go to 3 now. We received a grant from Google to reach 1,000 kids in South Africa with our course in 2011. People have also shown interest in running the course in Croatia, Poland and Egypt. We're also eyeing developing African countries in the long-term. As such, we're taking the time now to write our very own specialised course notes and exercises, and we this is why we need to decide *now* which path to take: 2 or 3? As we will be translating the notes we'll probably stick with out choice for the next few years. One reason not otherwise mentioned is that overall Unicode support is better in Python 3, and given your international audience, that's a strong point in favor of Python 3. -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ If you think it's expensive to hire a professional to do the job, wait until you hire an amateur. --Red Adair -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 10/26/2010 9:05 AM, kj wrote: Perhaps the disconnect here is that you're seeing the whole thing from an insider's point of view, while I'm still enough of an outsider not to share this point of view. (I happen to think that one the hallmarks of being an initiate to a discipline is an almost complete loss of any memory of what that discipline looked like when the person was a complete novice. If this is true, then it's easy to understand the difference in our perceptions.) That can be true of most technical communities, and Python is no exception. As someone who does quite a lot of training the challenge is always to hold on to those outsider perceptions to avoid the learners feeling lost. Anyway, thanks for letting me in on the joke. I'll pass it on. (Though, humorless as it is of me, I still would prefer the ZoP out of the standard library, to save myself having to tell those who are even newer to Python than me not to take it seriously.) The answer is probably the same as you will see if you try from __future__ import braces That feature *is* available in Python 2.6 ;-) regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon 2011 Atlanta March 9-17 http://us.pycon.org/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
On 2010-10-26, Lawrence D'Oliveiro l...@geek-central.gen.new_zealand wrote: In message mailman.216.1287980107.2218.python-l...@python.org, Steve Holden wrote: and, in fact, the console is only a GUI window in a windowed system. It might be one of the console emulation windows that init starts under linux, or even a terminal connected to a computer by a serila line, for heavens sake. But now you're no longer talking about Windows. Windows is the only one that gets it backwards like this, forcing the creation of GUI elements for non- GUI-based programs, I've been following this entire thread, and I'm afraid I have no clue at all waht you mean by that last phrase forcing the creation of GUI elements for non-GUI-based programs. and not for GUI-based ones. In Windows the default for python applications is that they run in a console session with stdin/stdout/stderr attached to a terminal emulator. The application itself may or may not create GUI windows on its own -- that's independent of whether it's attached to a terminal emulator or not. More reasonably-designed systems, such as you describe above, make no such distinction between GUI and non-GUI programs. Sure they do. When you create a launcher item or menu item in most desktops, there's a setting that says whether you want the program run in a terminal window or not. That's exactly the same thing you're controlling under Windows when you set the filename to .py or .pyw. There is no difference based on the name of your executable, how it is built, or what libraries it links to; the only difference is in its run-time behaviour, whether it invokes any GUI functions or not. No, we're not talking about whether apps invoke GUI functions or not. That's completely orthogonal to the issue at hand. We're talking about whether desktop manager should run the program with stdin/stdout/stderr connected to /dev/null or connected to a terminal emulator. The windows desktop determines that (like it determines other things) by looking at the filename. Other desktops generally have that information associated with the icon/button/menu-entry, not with the executable's filename. -- Grant Edwards grant.b.edwardsYow! And then we could sit at on the hoods of cars at gmail.comstop lights! -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: PyGUI 2.3
PyGUI 2.3 is available: http://www.cosc.canterbury.ac.nz/greg.ewing/python_gui/ This version works on Snow Leopard with PyObjC 2.3. Any reason your project is not easy_installable? Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 26/10/2010 15:42, Steve Holden wrote: he answer is probably the same as you will see if you try from __future__ import braces That feature*is* available in Python 2.6;-) In the past I used to think it was really cool that one could do from __future__ import exciting_and_cool_new_stuff now I really wish we had from __past__ import old_and_boring_syntax_26 etc etc -trapped on level five-ly yrs- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating PDF file in Python
On 10/26/2010 06:18 AM, Ed Keith wrote: I need to generate PDF files and I'm exploring what tools to use. I was planing on using ReportLab, but recently found some references to pango (http://www.pango.org/) and ciaro (http://cairographics.org/) being able to generate PDF files. But am having difficulty finding details. The program must be cross platform, it needs to run on both windows and Mac and might need to run on Linux in the future. It needs to generate both reports and tables and I would like to make the layout as user configurable as practical. Can pango - ciaro do this. How do they compare to ReportLab? Are there other options I have overlooked? -EdK Ed Keith e_...@yahoo.com Blog: edkeith.blogspot.com Try a package named reportlab. It's very comprehensive, opensource, written in Python and is cross-platform: http://www.reportlab.com/software/opensource/ Here's the Ubuntu Description: ReportLab library to create PDF documents using Python ReportLab is a library that lets you directly create documents in Adobe's Portable Document Format (PDF) using the Python programming language. ReportLab library creates PDF based on graphics commands without intervening steps. It's therefore extremely fast, and flexible (since you're using a full-blown programming language). Sample use cases are: * Dynamic PDF generation on the web * High-volume corporate reporting and database publishing * As embeddable print engine for other applications, including a 'report language' so that users can customize their own reports. * As 'build system' for complex documents with charts, tables and text such as management accounts, statistical reports and scientific papers * from XML to PDF in one step Luck, Gary Herron -- http://mail.python.org/mailman/listinfo/python-list
Re: Generating PDF file in Python
On Tue, 26 Oct 2010 08:38:45 -0700 Gary Herron gher...@islandtraining.com wrote: On 10/26/2010 06:18 AM, Ed Keith wrote: I was planing on using ReportLab, but recently found some references to pango Try a package named reportlab. It's very comprehensive, opensource, On the other hand, there is always reportlab. -- D'Arcy J.M. Cain da...@druid.net | Democracy is three wolves http://www.druid.net/darcy/| and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On 10/26/2010 2:31 AM, Xah Lee wrote: recently wrote a article based on a debate here. (can't find the original thread on Google at the moment) • 〈What's List Comprehension and Why is it Harmful?〉 http://xahlee.org/comp/list_comprehension.html it hit reddit. http://www.reddit.com/r/programming/comments/dw8op/whats_list_comprehension_and_why_is_it_harmful/ though, i don't find the argument there informative. For python, i can understand that it might be preferred, due to the special syntax, being more in sync with python because of the imperative hints in keywords. (e.g. those “for”, “if” in it.) But for more pure functional lang (e.g. haskell), i think lc is pretty bad. That's from the functional programming crowd. Python isn't a functional language. It has some minimal functional capabilities, and there's a lobby that would like more. So far, that's mostly been resisted. Attempts to allow multiline lambdas have been averted. The weird functional if syntax additions were a cave-in to the functional crowd, and may have been a mistake. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode questions
On 10/19/2010 12:02 PM, Tobiah wrote: I've been reading about the Unicode today. I'm only vaguely understanding what it is and how it works. Please correct my understanding where it is lacking. http://justfuckinggoogleit.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: HTMLParser not parsing whole html file
On 10/24/2010 11:44 PM, Stefan Behnel wrote: josh logan, 25.10.2010 04:14: I found the error. The HTML file I'm parsing has invalid HTML at line 193. It has something like: a href=mystuff class = stuff Note there is no space between the closing quote for the href tag and the class attribute. I guess I'll go through each file and correct these issues as I parse them. HTMLparser is not made to deal with non-HTML input. You can take a look at lxml.html or BeautifulSoup (up to 3.0), which handle these problems a lot better. Stefan You might try HTML5lib: http://code.google.com/p/html5lib/ The HTML 5 spec formalizes the concept of bad HTML. Really. There's a specified way to parse the most common HTML errors. Most browsers are far more tolerant of bad HTML than they should be, and not in a consistent way. The HTML 5 spec tries to fix that. I use BeautifulSoup, but it's being abandoned for the Python 3 transition. http://www.crummy.com/software/BeautifulSoup/3.1-problems.html; John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 10/25/2010 6:34 AM, Alex Willmer wrote: On Oct 25, 11:07 am, kjno.em...@please.post wrote: In The Zen of Python, one of the maxims is flat is better than nested? Why? Can anyone give me a concrete example that illustrates this point? I take this as a reference to the layout of the Python standard library and other packages i.e. it's better to have a module hierarchy of depth 1 or 2 and many top level items, than a depth of 5+ and only a few top level items. For instance import re2 import sqlite3 import logging import something_thirdparty vs import java.util.regex import java.sql import java.util.logging As in Python 2: import urllib Python 3: import urllib.request, urllib.parse, urllib.error http://diveintopython3.org/porting-code-to-python-3-with-2to3.html John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode questions
On 10/26/2010 12:32 PM, John Nagle wrote: On 10/19/2010 12:02 PM, Tobiah wrote: I've been reading about the Unicode today. I'm only vaguely understanding what it is and how it works. Please correct my understanding where it is lacking. http://justfuckinggoogleit.com/ Neither friendly nor helpful, John. Silence might have been more productive: feeling crabby today? regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon 2011 Atlanta March 9-17 http://us.pycon.org/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
Hello, I occasionally use LCs, if they seem useful. However, what I don't like about LCs is that they 'look-like' being a closed scope, while actually they are in the scope of there call. Example: i = 5 l = [i**2 for i in range(3)] i 2 Regards Andre -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
Andre Alexander Bell p...@andre-bell.de writes: I occasionally use LCs, if they seem useful. However, what I don't like about LCs is that they 'look-like' being a closed scope, while actually they are in the scope of there call. Example: i = 5 l = [i**2 for i in range(3)] i 2 Although: p...@sleeper-service:~$ python3 Python 3.1.2 (r312:79147, Sep 27 2010, 09:57:50) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. i = 5 l = [i**2 for i in range(3)] i 5 -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On Tue, Oct 26, 2010 at 11:07 AM, Andre Alexander Bell p...@andre-bell.dewrote: Hello, I occasionally use LCs, if they seem useful. However, what I don't like about LCs is that they 'look-like' being a closed scope, while actually they are in the scope of there call. Example: i = 5 l = [i**2 for i in range(3)] i 2 This has been corrected in Python 3. -- http://mail.python.org/mailman/listinfo/python-list
RE: is list comprehension necessary?
That's from the functional programming crowd. Python isn't a functional language. A noob question: what is a functional language? What does it meen? -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
On Tue, 26 Oct 2010 14:44:11 +, Grant Edwards wrote: There is no difference based on the name of your executable, how it is built, or what libraries it links to; the only difference is in its run-time behaviour, whether it invokes any GUI functions or not. No, we're not talking about whether apps invoke GUI functions or not. That's completely orthogonal to the issue at hand. We're talking about whether desktop manager should run the program with stdin/stdout/stderr connected to /dev/null or connected to a terminal emulator. The windows desktop determines that (like it determines other things) by looking at the filename. Other desktops generally have that information associated with the icon/button/menu-entry, not with the executable's filename. Windows executables contain an embedded type field which distinguishes between GUI and console executables (as well as those for the POSIX subsystem, native executables, etc). python.exe is a console executable, pythonw.exe is a GUI executable. Hence python.exe automatically gets a console window, while pythonw.exe doesn't. That's the whole reason why Windows has separate python.exe and pythonw.exe programs, while Unix can use a single /usr/bin/python program for both GUI and console usage. The Windows approach makes it easier to Do The Right Thing automatically, but it's a nuisance if you have a program which doesn't really fit into either of the console or GUI pigeonholes. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On Tue, 2010-10-26 at 09:45 -0700, John Nagle wrote: On 10/25/2010 6:34 AM, Alex Willmer wrote: On Oct 25, 11:07 am, kjno.em...@please.post wrote: In The Zen of Python, one of the maxims is flat is better than nested? Why? Can anyone give me a concrete example that illustrates this point? I take this as a reference to the layout of the Python standard library and other packages i.e. it's better to have a module hierarchy of depth 1 or 2 and many top level items, than a depth of 5+ and only a few top level items. For instance import re2 import sqlite3 import logging import something_thirdparty vs import java.util.regex import java.sql import java.util.logging As in Python 2: import urllib Python 3: import urllib.request, urllib.parse, urllib.error http://diveintopython3.org/porting-code-to-python-3-with-2to3.html My favorite is always: from django.contrib.auth.models import User # I know, not std lib -- http://mail.python.org/mailman/listinfo/python-list
Unittest: how to pass information to TestCase classes?
Hi, I have a question about unittest: let's say I create a temp dir for my tests, then use loadTestsFromNames() to load my tests from packages and modules they're in, then use TextTestRunner.run() to run the tests, how can I pass information to TestCase instances, e.g. the location of the temp dir I created? The dir has to be created just once, before any tests run, and then multiple packages and multiple modules in them are imported and run. Thanks! -ak -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
In mailman.258.1288104186.2218.python-l...@python.org Steve Holden st...@holdenweb.com writes: The answer is probably the same as you will see if you try from __future__ import braces That feature *is* available in Python 2.6 ;-) Now, that's hilarious. kj -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 Table Widget deleting c/c++ object
On Oct 19, 2:29 pm, David Boddie da...@boddie.org.uk wrote: On Monday 18 October 2010 23:26, Andrew wrote: I have two issues dealing with the table widget, though they may be interconnected. I'm not sure. Both delete the cell widgets off of my table but leave the rows, and then when I have the table update, it complains the c++ object has been deleted. # self.tableData.setCellWidget(rowCount, 0, trackItem) # RuntimeError: underlying C/C++ object has been deleted This is because you pass your widgets to this method and later ask the table to clear the contents of the table. When it does so, it deletes the underlying widgets, leaving only Python wrappers. The documentation mentions that the table takes ownership of the widget: http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qtablewidg... I had read that, but I did not fully understand what that actually was supposed to mean. like a 'Ok it has ownership, good for it?' I hadn't run into such a problem before either in any form. Now I know. I have a list of a custom widget class that keeps track of several directories. Each class gets put into a row on the table. I have a set of radio buttons that will show me different views of the data: All, New, Done, Errors, Warnings. When I switch views, I clear my table, set the row count to 0, and then add back in only the widgets I want to see. Error 1: I load in the data initially, and then repopulate the table, and then re-size the window, instantly all listed rows are cleared, but the rows stay. This only happened on the diagonal re-size (bottom left corner); not the up and down, or side to side re-size. Attempting to repopulate the table, resulted in: underlying C/C++ object has been deleted. Though it will put in the correct number of rows required. Everything worked fine as long as I did not re-size the window. This may only be a symptom of the behaviour and not a guarantee that the code was working correctly up until the point when the resize occurred. Error 2: I load in the data initially, and then repopulate the table, the table clears and then nothing happens. No error messages or even visible rows. After several more repopulates it with either crash or tell me: underlying C/C++ object has been deleted. I had error 1 two days ago, then without changing the code, I now get error 2. I do not have to re-size the window for it to break now. I recommend that you create a list of non-widget data structures in your parsePath() method and create widgets on the fly in your addToTable() method. If you need to retain information when you repopulate the table then update the data structures that correspond to the widgets just before you clear the table. David Thanks, it does work now that I've split it into a data and widget class and create the widgets on the fly. Thanks for the help and sorry for the delayed response. Andrew -- http://mail.python.org/mailman/listinfo/python-list
Schengen States free EDUCATION STUDY VISA
Schengen States free EDUCATION STUDY VISA http://childschooledu.blogspot.com/2010/10/get-internship-in-united-states.html The European Union (EU) allows for the free movement of goods between Italy and other member states: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Sweden, and United Kingdom. Bank Loan Online and Small Business Finance in the US http://lifeplaan.blogspot.com/2010/09/bank-loan-online-and-small-business.html A bank loan online generally refers to funding provided by a bank that can be accessed through an online application. Online applications usually only take a few minutes to complete and are analyzed by the bank within a couple of days. Bank loans typically do not require as many documents as a small business loan, but banks may require applicants to provide personal financial statements and credit histories along with the purpose of the loaned funds. more read http://lifeplaan.blogspot.com/2010/09/bank-loan-online-and-small-business.html -- http://mail.python.org/mailman/listinfo/python-list
Schengen States free EDUCATION STUDY VISA
Schengen States free EDUCATION STUDY VISA http://childschooledu.blogspot.com/2010/10/get-internship-in-united-states.html The European Union (EU) allows for the free movement of goods between Italy and other member states: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Sweden, and United Kingdom. Bank Loan Online and Small Business Finance in the US http://lifeplaan.blogspot.com/2010/09/bank-loan-online-and-small-business.html A bank loan online generally refers to funding provided by a bank that can be accessed through an online application. Online applications usually only take a few minutes to complete and are analyzed by the bank within a couple of days. Bank loans typically do not require as many documents as a small business loan, but banks may require applicants to provide personal financial statements and credit histories along with the purpose of the loaned funds. more read http://lifeplaan.blogspot.com/2010/09/bank-loan-online-and-small-business.html -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: PyGUI 2.3
On 10/26/2010 10:54 AM, Daniel Fetchinson wrote: PyGUI 2.3 is available: http://www.cosc.canterbury.ac.nz/greg.ewing/python_gui/ This version works on Snow Leopard with PyObjC 2.3. I suspect that Python 2.3 or later is required. should read Python 2.3 to Python 2.7 is required. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
How i can get data from an image
Hello there. I ve been using python a lot lately for my school in order to make small gui(wxpython) apps. Today a teacher came up with an interesting project. The idea is that he gives you a series of photos with some objects inside. For example a photo could contain two black circles in a white background. The question is how can i find a circle in a given image? When i find the circles how can i draw a line between them in order to create a connection? I know that this may need pattern recognition. What i want you to tell me is what things i will need in order to make this thing possible with python. My idea is to use use PIL in order to find the circles in the image. Then i will import this image to wxpython canvas and i will draw a line between their centers. Is that possible? I really need some help here. -- http://mail.python.org/mailman/listinfo/python-list
How i can get data from an image
Hello there. I ve been using python a lot lately for my school in order to make small gui(wxpython) apps. Today a teacher came up with an interesting project. The idea is that he gives you a series of photos with some objects inside. For example a photo could contain two black circles in a white background. The question is how can i find a circle in a given image? When i find the circles how can i draw a line between them in order to create a connection? I know that this may need pattern recognition. What i want you to tell me is what things i will need in order to make this thing possible with python. My idea is to use use PIL in order to find the circles in the image. Then i will import this image to wxpython canvas and i will draw a line between their centers. Is that possible? I really need some help here. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 26/10/2010 14:18, Benjamin Kaplan wrote: This is a programming language named after a British comedy group (not the snake). There are going to be jokes inserted in lots of otherwise serious things. Like the standard library. Please, lets NOT get a newsgroup cross feed! I don't want spam, spam, spam, python and spam in my inbox. :) Ian -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On 10/26/2010 07:22 PM, Ian Kelly wrote: i = 5 l = [i**2 for i in range(3)] i 2 This has been corrected in Python 3. Sorry. You're right. I forgot to mention that... Andre -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On 10/26/10, Mikael B mba...@live.se wrote: That's from the functional programming crowd. Python isn't a functional language. A noob question: what is a functional language? What does it meen? A language which supports the functional programming paradigm: http://en.wikipedia.org/wiki/Functional_programming Google+Wikipedia are your friends as always. Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: How i can get data from an image
You should check out OpenCV. On Tue, Oct 26, 2010 at 8:53 PM, Kechagias Apostolos pasxal.an...@gmail.com wrote: Hello there. I ve been using python a lot lately for my school in order to make small gui(wxpython) apps. Today a teacher came up with an interesting project. The idea is that he gives you a series of photos with some objects inside. For example a photo could contain two black circles in a white background. The question is how can i find a circle in a given image? When i find the circles how can i draw a line between them in order to create a connection? I know that this may need pattern recognition. What i want you to tell me is what things i will need in order to make this thing possible with python. My idea is to use use PIL in order to find the circles in the image. Then i will import this image to wxpython canvas and i will draw a line between their centers. Is that possible? I really need some help here. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On Tue, Oct 26, 2010 at 10:31 AM, Mikael B mba...@live.se wrote: That's from the functional programming crowd. Python isn't a functional language. A noob question: what is a functional language? What does it meen? -- http://mail.python.org/mailman/listinfo/python-list It's a language where executing a program is equivalent to evaluating a function - so things that are usually statements, like if statements, are expressions that return a value. Pure functional languages have functions with no side effects, at least, not unless a monad (side effect detected by the type system in this case) catches it somehow. The coolest thing about pure functional languages, is you can give them a debugger that allows you to step backward in time. They're also very parallelisable in theory, because they yield programs with little to no shared, mutable state - which is important given that multicore is catching on so fast. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unittest: how to pass information to TestCase classes?
AK andrei@gmail.com writes: Hi, I have a question about unittest: let's say I create a temp dir for my tests, then use loadTestsFromNames() to load my tests from packages and modules they're in, then use TextTestRunner.run() to run the tests, how can I pass information to TestCase instances, e.g. the location of the temp dir I created? Have it available from outside the TestCase child classes. Either as a module-level global, or imported from some other module. -- \ Moriarty: “Forty thousand million billion dollars? That money | `\must be worth a fortune!” —The Goon Show, _The Sale of | _o__) Manhattan_ | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Why flat is better than nested?
On 10/26/2010 2:44 PM, kj wrote: In mailman.258.1288104186.2218.python-l...@python.org Steve Holden st...@holdenweb.com writes: The answer is probably the same as you will see if you try from __future__ import braces That feature *is* available in Python 2.6 ;-) Now, that's hilarious. See, there *is* a place for humor :) regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon 2011 Atlanta March 9-17 http://us.pycon.org/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Unittest: how to pass information to TestCase classes?
On 10/26/2010 2:46 PM, AK wrote: Hi, I have a question about unittest: let's say I create a temp dir for my tests, then use loadTestsFromNames() to load my tests from packages and modules they're in, then use TextTestRunner.run() to run the tests, how can I pass information to TestCase instances, e.g. the location of the temp dir I created? The dir has to be created just once, before any tests run, and then multiple packages and multiple modules in them are imported and run. In which case a class variable would seem to be the appropriate mechanism. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon 2011 Atlanta March 9-17 http://us.pycon.org/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
High(er) level frameworks that wrap Tkinter/ttk?
Curious if there are any higher level frameworks that attempt to wrap Tkinter? For example, wxPython is wrapped by the Dabo framework (http://dabodev.com/) and PythonCard. Motivation: We've recently moved to Python 2.7 (Windows) and are very impressed with the new ttk (Tile) support which allows one to build professional quality, platform native GUI's using the built-in Tkinter framework. In the past we would have used wxPython to create simple GUI interfaces for our command line utilities, but we're re-thinking this strategy in favor of using Tkinter/ttk for these use cases. Thanks, Malcolm -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
In message pan.2010.10.26.17.38.14.766...@nowhere.com, Nobody wrote: python.exe is a console executable, pythonw.exe is a GUI executable. Hence python.exe automatically gets a console window, while pythonw.exe doesn't. That's the whole reason why Windows has separate python.exe and pythonw.exe programs, while Unix can use a single /usr/bin/python program for both GUI and console usage. The Windows approach makes it easier to Do The Right Thing automatically ... Except it provides no easy way to capture the contents of that “console”, for when you’re trying to track down problems, because it disappears as soon as the program exits. It would be a stretch indeed to call this “doing the right thing”, automatically or otherwise. -- http://mail.python.org/mailman/listinfo/python-list
Re: python library for mail/news message headers bodies?
Chris Rebert wrote: On Mon, Oct 25, 2010 at 7:18 PM, Arthur Divot art...@example.com wrote: Is there a python library equivalent to Perl's News::Article (load a file containing a news or mail message into an object, manipulate the headers and body, create a new empty one, save one to a file)? The `email` package in the std lib?: http://docs.python.org/library/email.html That's just what I need. Thanks. The Global Module Index is your friend: http://docs.python.org/modindex.html Yes it is! -- http://mail.python.org/mailman/listinfo/python-list
Python 2.7 or 3.1
Which is better for a beginner to get started in Python with? Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
In message mailman.265.1288113240.2218.python-l...@python.org, Dennis Lee Bieber wrote: (The Amiga made it simple -- a shell invocation received a non-zero argc, with command line parameters in argv; a clicked invocation received argc of 0, and argv pointed to a structure containing the information from the associated .info file [Workbench only displayed icons from .info files, unlike Windows displaying everything]). Why would you want both CLI and GUI functions in one program? The *nix philosophy is that a program should do one thing, and do it well. That means a command-line tool should concentrate on being a good command- line tool. For users who want to access that functionality through a GUI, you build a GUI front end which makes use of that tool, and possibly others as well, at the back end. That way, you end up with a minimum of complexity and duplication of functionality, and a maximum of flexibility and power. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unix-head needs to Windows-ize his Python script (II)
On Wed, 27 Oct 2010 13:46:28 +1300, Lawrence D'Oliveiro wrote: Why would you want both CLI and GUI functions in one program? An obvious example was the one which was being discussed, i.e. the Python interpreter. Depending upon the script, it may need to behave as a command-line utility (read argv, do stuff, exit), a terminal-based interactive program, a GUI program, a network server, or whatever. Forcing a program to choose between the two means that we need both python.exe and pythonw.exe. A less obvious example is a program designed to use whatever interface facilities are available. E.g. XEmacs can use either a terminal or a GUI or both. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.7 or 3.1
Am 27.10.2010 02:16, schrieb Braden Faulkner: Which is better for a beginner to get started in Python with? Thanks! It depends on your needs. Most 3rd party library haven't been ported to Python 3 yet. You'll get more useful stuff with 2.7 or even 2.6. For now most Linux distributions have Python 2.6. With some care you can write your app with Python 2 and automatically port it to Python 3 with the 2to3 tool. Christian -- http://mail.python.org/mailman/listinfo/python-list
Interaction btw unittest.assertRaises and __getattr__. Bug?
Unittest assertRaises cannot handle exception raised inside __getattr__ method. Is it a bug? or am I missing something obvious? Here is a sample of this problem: - import unittest class C(): def simple_attr(self): raise AttributeError def __getattr__(self, name): raise AttributeError class Test(unittest.TestCase): def test_simple_attr(self): c = C() self.assertRaises(AttributeError, c.simple_attr) def test_getattr(self): c = C() self.assertRaises(AttributeError, c.foo) unittest.main() - Unittest assertRaises handles simple attribute lookup but the exception inside __getattr__ bypasses unittest and generates traceback: -- E. == ERROR: test_getattr (__main__.Test) -- Traceback (most recent call last): File xxx.py, line 19, in test_getattr self.assertRaises(AttributeError, c.foo) File xxx.py, line 9, in __getattr__ raise AttributeError AttributeError -- Ran 2 tests in 0.000s FAILED (errors=1) -- It doesn't matter what kind of exception it raises. Any exception inside __getattr__ bypasses assertRaises. This happens both with 3.1.2 and 2.6.5. Any idea? Inyeol -- http://mail.python.org/mailman/listinfo/python-list
Trouble with importing
In brief summary, I have installed gnuradio [gnuradio.org] and the gen2_rfid module [https://www.cgran.org/wiki/Gen2] on Ubuntu 10.04, with all installed packages up to date as of a few days ago. When I try to run the rfid reader/decoder script, I get the following error: b...@sdrfid:~/gen2_rfid/trunk/src/app$ sudo nice -n 20 ./ reader_decoder.py Traceback (most recent call last): File ./reader_decoder.py, line 3, in module from gnuradio import gr, gru, rfid It is the rfid module that is causing the problem. The strange thing is that b...@sdrfid:~/gen2_rfid/trunk/src/app$ python -c from gnuradio import rfid works fine (at least, it doesn't say anything, which I take to be a good sign), but b...@sdrfid:~/gen2_rfid/trunk/src/app$ sudo python -c from gnuradio import rfid Traceback (most recent call last): File string, line 1, in module ImportError: cannot import name rfid Causes an error. sudo echo $PYTHONPATH yields the same result as echo $PYTHONPATH so I don't think it's an issue of path. Can anyone suggest something that might be causing this problem? Ben -- http://mail.python.org/mailman/listinfo/python-list
Can 32-bit and 64-bit Python coexist in the same computer?
Hi guys! I got a new laptop computer which came with the 64-bit version of Windows 7. I installed the 64-bit versions of Python and a few other libraries and wrote a few Python programs right there. If I copy the Python scripts to a 32-bit computer, it runs flawlessly. But in the future I may still need to distribute my compiled programs to people who use 32-bit Windows and it seems that neither PyInstaller nor py2exe can cross compile a 32-bit application from this 64-bit computer. So ugly as it sounds, I'm considering installing in parallel the 32- bit version of Python on this same computer. Is there anything I need to know or a better way to achieve this instead of having a double Python installation? By the way, I use Python 2.6, so it would be [Python 2.6.x 32-bit] and [Python 2.6.x 64-bit] on the same computer. Thanks! Andy -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.7 or 3.1
Am 27.10.2010 03:38, schrieb Jorge Biquez: And what about if I only were to develop for the web? I mean web applications, Mysql, etc? It would be better to still be in 2.7? Most frameworks and database adapters at least target Python 2.6+ as their main Python version. I guess the majority has no or only experimental support for Python 3.1. The overall situation improves every week. Christian PS: I recommend against MySQL, if you need the full power or a RDBMS. Just try to combine foreign keys with database triggers and you'll see which major features are still broken in MySQL. But that's just my point of view as a power user. -- http://mail.python.org/mailman/listinfo/python-list
Re: How i can get data from an image
On 10/26/2010 1:46 PM, Krister Svanlund wrote: You should check out OpenCV. Yes. See http://code.google.com/p/pyopencv/ Note the people detector example. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble with importing
On Tue, Oct 26, 2010 at 5:24 PM, Ben bahr...@gmail.com wrote: b...@sdrfid:~/gen2_rfid/trunk/src/app$ python -c from gnuradio import rfid works fine (at least, it doesn't say anything, which I take to be a good sign), but b...@sdrfid:~/gen2_rfid/trunk/src/app$ sudo python -c from gnuradio import rfid Traceback (most recent call last): File string, line 1, in module ImportError: cannot import name rfid What are the permissions on the gnuradio package and the rfid module? Do you see anything interesting if you run python with -v or -vv? Like this: sudo python -v -c from gnuradio import rfid -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Re: Interaction btw unittest.assertRaises and __getattr__. Bug?
Inyeol inyeol.lee at gmail.com writes: or am I missing something obvious? The attribute access is evaluated before the call to assertRaises, so unittest never has a cache to cache it. -- http://mail.python.org/mailman/listinfo/python-list
Re: Interaction btw unittest.assertRaises and __getattr__. Bug?
On Tue, Oct 26, 2010 at 7:51 PM, Benjamin Peterson benja...@python.org wrote: Inyeol inyeol.lee at gmail.com writes: or am I missing something obvious? The attribute access is evaluated before the call to assertRaises, so unittest never has a cache to cache it. or rather, chance to catch it. Seems there were 2 typos. Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.7 or 3.1
Hello Christian and all . Thanks for the comments. I am newbie to Python trying to learn all the comments, that , by the way, I am very impressed of the knowledge of the people present in this list. I was wondering if you can comment more about what alternatives to use instead to MySql. My web solutions do not need all the power of a true database, I even was wondering if I couldbe able to put simple dBase files (yes, dBase files) with my web solutions. - Any comments you can do on what to use 2.7 or 3.1? ( I guess 2.7 for what I have read) - Maybe should be another subject but... Any comments on using dBase format file with Python? Thanks in advance. Jorge Biquez At 08:50 p.m. 26/10/2010, you wrote: Am 27.10.2010 03:38, schrieb Jorge Biquez: And what about if I only were to develop for the web? I mean web applications, Mysql, etc? It would be better to still be in 2.7? Most frameworks and database adapters at least target Python 2.6+ as their main Python version. I guess the majority has no or only experimental support for Python 3.1. The overall situation improves every week. Christian PS: I recommend against MySQL, if you need the full power or a RDBMS. Just try to combine foreign keys with database triggers and you'll see which major features are still broken in MySQL. But that's just my point of view as a power user. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.7 or 3.1
On Oct 26, 2010, at 11:10 PM, Jorge Biquez wrote: Hello Christian and all . Thanks for the comments. I am newbie to Python trying to learn all the comments, that , by the way, I am very impressed of the knowledge of the people present in this list. I was wondering if you can comment more about what alternatives to use instead to MySql. My web solutions do not need all the power of a true database, I even was wondering if I couldbe able to put simple dBase files (yes, dBase files) with my web solutions. - Any comments you can do on what to use 2.7 or 3.1? ( I guess 2.7 for what I have read) - Maybe should be another subject but... Any comments on using dBase format file with Python? Hi Jorge, Python comes with SQLite baked in, meaning you don't have to install anything extra to get the full power of SQLite. Depending on what you want to do, that might be perfect for your needs. It's been part of Python since 2.5. If you need a heavy-duty database, I recommend checking out PostgreSQL. I've always found it solid and easy to use. Have fun Philip At 08:50 p.m. 26/10/2010, you wrote: Am 27.10.2010 03:38, schrieb Jorge Biquez: And what about if I only were to develop for the web? I mean web applications, Mysql, etc? It would be better to still be in 2.7? Most frameworks and database adapters at least target Python 2.6+ as their main Python version. I guess the majority has no or only experimental support for Python 3.1. The overall situation improves every week. Christian PS: I recommend against MySQL, if you need the full power or a RDBMS. Just try to combine foreign keys with database triggers and you'll see which major features are still broken in MySQL. But that's just my point of view as a power user. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On Oct 26, 11:29 am, John Nagle na...@animats.com wrote: On 10/26/2010 2:31 AM, Xah Lee wrote: recently wrote a article based on a debate here. (can't find the original thread on Google at the moment) • 〈What's List Comprehension and Why is it Harmful?〉 http://xahlee.org/comp/list_comprehension.html it hit reddit. http://www.reddit.com/r/programming/comments/dw8op/whats_list_compreh... though, i don't find the argument there informative. For python, i can understand that it might be preferred, due to the special syntax, being more in sync with python because of the imperative hints in keywords. (e.g. those “for”, “if” in it.) But for more pure functional lang (e.g. haskell), i think lc is pretty bad. That's from the functional programming crowd. Python isn't a functional language. It has some minimal functional capabilities, and there's a lobby that would like more. So far, that's mostly been resisted. Attempts to allow multiline lambdas have been averted. The weird functional if syntax additions were a cave-in to the functional crowd, and may have been a mistake. John Nagle I think if you look at LC's (Python's LC's that is) from an esoteric and mainstream (almost haughty) point of view then yes they will seem offensive to you. However i think Guido and his cast of extras (if I may speak on behalf of this fine group of folks!) intended LC's to be like any other construct we have come to love about Python. Syntactic simplicity coupled with elegant phrasing whist never forgetting to drop a good joke when the situation permits (as is the case for the easter eggs and whatnot). So my point is that Python LC's are different from mainstream LC's and that is a good thing. I find Pythons map and lambda far more atrocious than LC's , really. -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On Oct 26, 12:07 pm, Andre Alexander Bell p...@andre-bell.de wrote: Hello, I occasionally use LCs, if they seem useful. However, what I don't like about LCs is that they 'look-like' being a closed scope, while actually they are in the scope of there call. Example: i = 5 l = [i**2 for i in range(3)] i 2 I must admit you make a good point here however the only time that will slip you up is when you first experienced the Python LC syntax. After a few hello world LC's you'll begin to love and understand them completely. -- http://mail.python.org/mailman/listinfo/python-list
Re: is list comprehension necessary?
On 10/26/2010 09:28 PM, rantingrick wrote: On Oct 26, 12:07 pm, Andre Alexander Bellp...@andre-bell.de wrote: Hello, I occasionally use LCs, if they seem useful. However, what I don't like about LCs is that they 'look-like' being a closed scope, while actually they are in the scope of there call. Example: i = 5 l = [i**2 for i in range(3)] i 2 That (very small) issue has been fixed in Python3: l = [i**2 for i in range(3)] i Traceback (most recent call last): File stdin, line 1, in module NameError: name 'i' is not defined Gary Herron I must admit you make a good point here however the only time that will slip you up is when you first experienced the Python LC syntax. After a few hello world LC's you'll begin to love and understand them completely. -- http://mail.python.org/mailman/listinfo/python-list
Re: Can 32-bit and 64-bit Python coexist in the same computer?
Andy wrote: Hi guys! I got a new laptop computer which came with the 64-bit version of Windows 7. I installed the 64-bit versions of Python and a few other libraries and wrote a few Python programs right there. If I copy the Python scripts to a 32-bit computer, it runs flawlessly. But in the future I may still need to distribute my compiled programs to people who use 32-bit Windows and it seems that neither PyInstaller nor py2exe can cross compile a 32-bit application from this 64-bit computer. A better way may be to have everything as a source package which auto compiles during installation, then you can use an universal package. So ugly as it sounds, I'm considering installing in parallel the 32- bit version of Python on this same computer. Is there anything I need to know or a better way to achieve this instead of having a double Python installation? This will work, you just need to have two different paths to the installations and of course you will need to install packages for both of them. It works kind in the same way as you would have 2.6 and 3 installed on the same time. -- //Aho -- http://mail.python.org/mailman/listinfo/python-list
[issue10107] Quitting IDLE on Mac doesn't save unsaved code
Ned Deily n...@acm.org added the comment: The attached patches implement an exit callback for IDLE on OS X that ensures IDLE will not terminate from an application Quit command without giving the opportunity to save files. -- assignee: ned.deily - ronaldoussoren components: +Macintosh keywords: +patch priority: normal - high stage: needs patch - patch review Added file: http://bugs.python.org/file19366/issue10107-py3k-31.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10107 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10107] Quitting IDLE on Mac doesn't save unsaved code
Changes by Ned Deily n...@acm.org: Added file: http://bugs.python.org/file19367/issue10107-27.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10107 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10107] Quitting IDLE on Mac doesn't save unsaved code
Ned Deily n...@acm.org added the comment: BTW, the patched IDLEs were tested on 2.7 and py3k (3.2a3+) on 10.4, 10.5, and 10.6 with the Apple-supplied Tk 8.4 (all), the Apple-supplied Tk 8.5 (available only in 10.6), ActiveState Tk 8.4 (all), and ActiveState 8.5 (all). And the patches have no affect nor are needed when linked with an X11-based Tk on OS X. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10107 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10176] telnetlib.Telnet.read_very_eager() performance
ptz ppt...@gmail.com added the comment: As David suggested, it indeed seems to be a case of timing. When telnetlib.Telnet(...) returns, the server still doesn't have the data cooked, and read_very_eager() fetches nothing. So nothing here fails as such, it's just that my 0 experience in network programming showed. Either way, some things you could do to get the function g() above to fetch the data the server usually returns upon connection are: a) insert a time.sleep(t) line after creating the socket. But I don't think there is one answer as to what the value of t should be. b) if one knows the format of the data that will be received, one could use read_until(expected string) c) one could write something like def g(): ... f = telnetlib.Telnet(chessclub.com) ... data = '' ... while not data: ... data = f.read_some() ... print data,f.read_very_eager() ... This simply loops until the server has some cooked data available, then fetches it. Tested, works, and is probably the way to do it. Either way, like David wisely said, this isn't an issue with either Python or telnetlib. However, it may be a good idea to add a warning to the documentation to the effect that by the time the Telnet constructor returns cooked data is typically not yet available from the server. To a beginner network programmer, this is far from obvious. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10176 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10194] Add gc.remap() function to the gc module.
Antoine Pitrou pit...@free.fr added the comment: Agreed with Benjamin. There is already a visible issue with the patch: it breaks compatibility because the Py_VISIT() argument must now be an lvalue. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10194 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10195] Memory allocation fault-injection?
Antoine Pitrou pit...@free.fr added the comment: Unless we want to test manually each memory allocation in the interpreter, the only reasonable way seems to be some kind of fuzzing (perhaps using a reproducible random seed). -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5178] Add context manager for temporary directory
Nick Coghlan ncogh...@gmail.com added the comment: Merging the interfaces for mkdtemp and TemporaryDirectory isn't going to happen. mkstemp/mkdtemp are for when the user wants to control the lifecycle of the filesystem entries themselves. (Note that context management on a regular file-like object only closes the file, it doesn't delete it from the filesystem). They're also intended as relatively thin wrappers around the corresponding C standard library functionality. The other objects in tempfile (TemporaryFile, TemporaryDirectory, etc) are for when the user wants the lifecycle of the Python object to correspond with the lifecycle of the underlying filesystem element. That said, TD itself can be used to create the temporary directory without having to use it as a context manager (the underlying directory is created in __init__, not __enter__). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5178 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6269] threading documentation makes no mention of the GIL
Ray.Allen ysj@gmail.com added the comment: Agree with Jesse, the description in the patch is not quite correct. I think detailed description of the GIL has been given in C API documentation: http://docs.python.org/c-api/init.html#thread-state-and-the-global-interpreter-lock. How about just give this link in threading module documentation? -- nosy: +ysj.ray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6269 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2775] Implement PEP 3108
Antoine Pitrou pit...@free.fr added the comment: Shouldn't this be closed? Most of this has been done and we can't do the rest anyway, without breaking backwards compatibility. -- nosy: +pitrou status: open - pending ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2775 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3362] locale.getpreferredencoding() gives bus error on Mac OS X 10.4.11 PPC
Antoine Pitrou pit...@free.fr added the comment: Is it still reproduceable with 2.7, 3.1 or 3.2? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue3362 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10195] Memory allocation fault-injection?
STINNER Victor victor.stin...@haypocalc.com added the comment: Don't you know http://www.nongnu.org/failmalloc/? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10189] SyntaxError: no binding for nonlocal doesn't contain a useful traceback
R. David Murray rdmur...@bitdance.com added the comment: Yes, but in that particular case the exact line referenced is involved in the error, since it that error is that the symbol is both nonlocal and an argument, and the error points to the head of the block which is the 'def' statement. Attached is a patch that adds the available line number info to all of the error messages except the one for nonlocal at the global level. In that case the line number will always be zero, so that does not -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10189 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10189] SyntaxError: no binding for nonlocal doesn't contain a useful traceback
Changes by R. David Murray rdmur...@bitdance.com: -- Removed message: http://bugs.python.org/msg119601 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10189 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10195] Memory allocation fault-injection?
Antoine Pitrou pit...@free.fr added the comment: Don't you know http://www.nongnu.org/failmalloc/? This doesn't answer the question of what and how to test. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10189] SyntaxError: no binding for nonlocal doesn't contain a useful traceback
R. David Murray rdmur...@bitdance.com added the comment: Yes, but in that particular case the exact line referenced is involved in the error, since it that error is that the symbol is both nonlocal and an argument, and the error points to the head of the block which is the 'def' statement. Attached is a patch that adds the available line info, and also modifies the 'nonlocal at global level' message to include the symbol name. I think this change is a good idea because without the patch this code: cat temp import foo cat foo.py def f(): def g(): nonlocal a gives this: ./python temp Traceback (most recent call last): File temp, line 1, in module import foo SyntaxError: no binding for nonlocal 'a' found which is even more confusing that not having any traceback at all. After the patch it will look like this: Traceback (most recent call last): File temp, line 1, in module import foo File /home/rdmurray/python/py3k/foo.py, line 2 def g(): SyntaxError: no binding for nonlocal 'a' found -- keywords: +patch Added file: http://bugs.python.org/file19368/nonlocal-traceback.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10189 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10189] SyntaxError: no binding for nonlocal doesn't contain a useful traceback
R. David Murray rdmur...@bitdance.com added the comment: Ah, I hadn't noticed Benjamin assigned this to himself when I submitted that patch. Well, maybe it will be marginally useful anyway :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10189 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10197] subprocess.getoutput fails on win32
New submission from jldm j_l_domen...@yahoo.com:
Hi, first of all sorry for my English.
On windows XP SP3, the following code:
import subprocess
subprocess.getoutput(dir)
returns
'{ is not recognized as an internal or external command,\noperable
program or batch file.'
I made a workaround by changing in the file Lib/subprocess.py the line 574 (I
thin in 3.2a3 is 584) (in the getstatusoutput(cmd) function definition) from:
pipe = os.popen('{ ' + cmd + '; } 21', 'r')
to:
pipe = os.popen('( ' + cmd + '; ) 21', 'r')
I have tested it with:
ActivePython 3.1.2.3 (ActiveState Software Inc.) based on
Python 3.1.2 (r312:79147, Mar 22 2010, 12:20:29) [MSC v.1500 32 bit (Intel)] on
win32
and
Python 3.2a3 (r32a3:85355, Oct 10 2010, 17:11:45) [MSC v.1500 32 bit (Intel)]
on win32
Regards from Spain.
José Luis Domenech
--
messages: 119605
nosy: jldm
priority: normal
severity: normal
status: open
title: subprocess.getoutput fails on win32
type: behavior
versions: Python 3.1, Python 3.2
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[issue7761] telnetlib Telnet.interact fails on Windows but not Linux
R. David Murray rdmur...@bitdance.com added the comment: Committed to py3k in r85846, 3.1 in r85847. -- resolution: - fixed stage: unit test needed - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7761 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10197] subprocess.getoutput fails on win32
R. David Murray rdmur...@bitdance.com added the comment:
Oddly, the test suite skips getoutput and getstatusoutput on windows with the
comment that the source says it is relevant only for posix, but the
documentation does not have 'availability: unix' tags. (It is also odd that
getoutput isn't documented, but that's a different issue.)
Your workaround can't be used as a fix, since the semantics of {}s in the shell
are different from those of ()s.
It's not clear to me what the point of the {}s is, but I have a fear that
eliminating them would introduce subtle changes in the behavior of getoutput
calls. Perhaps not, though.
It looks like this issue amounts to an RFE for support of
getoutput/getstatusoutput on Windows, though the fact that it is not documented
as unix-only may make it a bug instead :)
The appropriate fix is probably to conditionalize the code based on platform.
A complete patch will require unit test changes and documentation changes
(since the docs currently mention the braces).
All of that said, it also appears that the new check_output should be preferred
to either getoutput or getstatusoutput. Perhaps those functions could be
re-implemented in terms of check_output.
--
nosy: +r.david.murray
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[issue10197] subprocess.getoutput fails on win32
Changes by Brian Curtin cur...@acm.org: -- components: +Windows nosy: +brian.curtin ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10194] Add gc.remap() function to the gc module.
Peter Ingebretson pinge...@yahoo.com added the comment: Thanks, I've started a thread on python-dev to discuss the patch. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10194 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10198] wave module writes corrupt wav file for zero-length writeframes
New submission from David Barnett davidbarne...@gmail.com: If the first call to writeframes happens to take an empty string as the data to write, then the next call to writeframes writes a 2nd header into the file, and forever after fails to patch the data length correctly. -- components: Library (Lib) messages: 119609 nosy: mu_mind priority: normal severity: normal status: open title: wave module writes corrupt wav file for zero-length writeframes type: behavior versions: Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10198 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10198] wave module writes corrupt wav file for zero-length writeframes
David Barnett davidbarne...@gmail.com added the comment: This patch against the python 2.6 version fixes the problem for me. -- keywords: +patch Added file: http://bugs.python.org/file19369/fix_double_header.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10198 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
