samurai-x2 0.1 released
Hi, We are happy to release version 0.1 of samurai-x2. samurai-x2 is a window manager written in pure python using ctypes, xcb and cairo. samurai-x2 is a rewrite of samurai-x which used xlib, the new version uses xcb instead which makes the code simpler and faster. Using xcb makes samurai-x one of the first window managers to use xcb and using nothing but python and ctypes makes samurai-x one of the first 'pure python' window managers available. For more information, including installation instructions check http://samurai-x.org. Big thanks to all have helped out with samurai-x but especially to Fred Reichbier who has done a lot of work on the new xcb based version and to Jochen Maes for hosting the project. Merry Christmas Dunk Fordyce -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
[ANN] Python 2.5.4 (final)
On behalf of the Python development team and the Python community, I'm happy to announce the release of Python 2.5.4 (final). Python 2.5.3 unfortunately contained an incorrect patch that could cause interpreter crashes; the only change in Python 2.5.4 relative to 2.5.4 is the reversal of this patch. 2.5.4 is the last bug fix release of Python 2.5. Future 2.5.x releases will only include security fixes. According to the release notes, about 80 bugs and patches have been addressed since Python 2.5.2, many of them improving the stability of the interpreter, and improving its portability. See the release notes at the website (also available as Misc/NEWS in the source distribution) for details of bugs fixed; most of them prevent interpreter crashes (and now cause proper Python exceptions in cases where the interpreter may have crashed before). For more information on Python 2.5.4, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.5.4 Highlights of the previous major Python releases are available from the Python 2.5 page, at http://www.python.org/2.5/highlights.html Enjoy this release, Martin Martin v. Loewis mar...@v.loewis.de Python Release Manager (on behalf of the entire python-dev team) -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: join a samba domain
On 22 déc, 19:37, Toff christophed...@gmail.com wrote:
On 22 déc, 18:59, Jens Henrik Leonhard Jensen
j...@statsbiblioteket.dk wrote:
Toff wrote:
d = c.Win32_ComputerSystem
d.JoinDomainOrWorkGroup(None, 3, mydom, mydompw, radmin\\mydom)
Shouldn't radmin\\mydom be admin\\mydom or radmin\mydom.
Or maybe just admin
/Jens Henrik
you are right but i've got the same error.
the more i look at my script the more i think it s a BUG.
#ALL works great
import wmi
c = wmi.WMI()
for computer in c.Win32_ComputerSystem():
if computer.PartOfDomain:
print computer.Domain #DOMCD
print computer.SystemStartupOptions # (u'Microsoft
Windows XP
Professionnel /noexecute=optin /fastdetect',)
#error message
computer.JoinDomainOrWorkGroup('DOMCD', 'adminLocal',
'admin\
\DOMCD',None,3 )
##
DOMCD
(u'Microsoft Windows XP Professionnel /noexecute=optin /
fastdetect',)
Traceback (most recent call last):
File integrdom.py, line 51, in module
main()
File integrdom.py, line 13, in main
joindom()
File integrdom.py, line 47, in joindom
computer.JoinDomainOrWorkGroup('DOMCD', 'adminLocal', 'admin\
\DOMCD',None,3
)
File c:\Python25\Lib\site-packages\wmi.py, line 493, in
__getattr__
handle_com_error (error_info)
File c:\Python25\Lib\site-packages\wmi.py, line 189, in
handle_com_error
raise x_wmi, \n.join (exception_string)
wmi.x_wmi
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Re: no sign() function ?
pdora...@pas-de-pub-merci.mac.com (Pierre-Alain Dorange) writes: def sign_0(x): if x==0.0: return 0.0 elif x0.0: return 1.0 else: return -1.0 This might be slightly faster: def sign(x): return 1 if x 0 else x and -1 -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
s...@pobox.com writes: If you look back at the Tour de France results from the 80's I believe Greg Lemond won it one year without ever winning a stage. Well I think it was actually in 1990, his last win sadly. -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: Are Django/Turbogears too specific?
Daniel Fetchinson a écrit : (snip) The 1.x branch of tg is built on cherrypy, the 2.x branch is built on pylons. Both branches depend on external packages for most of their functionality which makes them very flexible. Django is monolithic Except that 1/ you can use each component (request handler/dispatcher, templating system and ORM) standalone, and 2/ you can use any other ORM or templating system. and was intended to be monolithic. highly integrated would be more accurate than monolithic IMHO. Of course you can customize it and use different components than the defaults, but after all *everything* is customizable since the source code is there and you can modify it. You don't need to touch the source to swap ORM or templating system. The point is that tg was designed with flexibility and customizability in mind, while django was designed with a monolithic infrastructure in mind. s/monolithic/integrated/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
Steve Holden a écrit : walterbyrd wrote: [...] Fooled by version numbers ? No, but I am giving django the benefit of the doubt. The django project told people all along that django was not to be considered production ready before 1.0. I will accept that some people decided to wait until 1.0 came out to do any production development. Maybe django is only lagging because 1.0 just came out? The Django people said no such thing. They maintained the trunk as stable - they test so well that many people did indeed rely on the trunk for production systems. Indeed - my first Django app has been in production for more than 3 years now. (snip) My actual CTO is a big Ruby/Rails fan, yet he settled on Python/Django for our current 'big' project. Wonder why ? Not knowing much about RoR: yes, I wonder why? Is it because python has a cleaner syntax? Or what? It's because he decided that Django was the best tool for the particular job, making him unusually open-minded for a member of the pointy-haired species. Being a CTO doesn't necessarily makes you pointy-haired !-) We're a small shop (12 peoples), and the guy is a developper too (and yes, an active one). Unlike some on this list he doesn't let his prejudices blind him to reality. Yes - that was the point. -- http://mail.python.org/mailman/listinfo/python-list
[no subject]
-- http://mail.python.org/mailman/listinfo/python-list
Re: join a samba domain
Or maybe could I try with LoadLibrary(netapi32.dll); and the netjoindomain function ? but it doesn't look very easy -- http://mail.python.org/mailman/listinfo/python-list
Re: using subprocess module in Python CGI
Thank you for the prompt response.
Yeah, I missed out one line at the end of the error, the whole of which is:
Traceback (most recent call last):
File process.py, line 18, in module
retval = subprocess.call(comd, 0, None, None, outptr, errptr)
File /usr/lib/python2.5/subprocess.py, line 443, in call
return Popen(*popenargs, **kwargs).wait()
File /usr/lib/python2.5/subprocess.py, line 593, in __init__
errread, errwrite)
File /usr/lib/python2.5/subprocess.py, line 1135, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
Looking forward to any kind of help or suggestion in this regard.
Thanks.
On Tue, Dec 23, 2008 at 7:00 AM, Chris Rebert c...@rebertia.com wrote:
On Mon, Dec 22, 2008 at 2:02 AM, ANURAG BAGARIA
anurag.baga...@gmail.com wrote:
Hello,
I am a Python Newbie and would like to call a short python script via
browser using a CGI script, but initially I am trying to call the same
python script directly through python command line. The script intends to
perform a few command line in a pipe and I have written the script (a
short
one) as follows.
#!/usr/bin/python
import cgi, string, os, sys, cgitb, commands, subprocess
import posixpath, macpath
#file = x.tar.gz
#comd = tar -xf %s % (file)
#os.system(comd)
#commands.getoutput('tar -xf x.tar.gz | cd demo; cp README ../')
comd = [\
tar -xf x.tar.gz, \
cd demo, \
cp README ../, \
]
outFile = os.path.join(os.curdir, output.log)
outptr = file(outFile, w)
errFile = os.path.join(os.curdir, error.log)
errptr = file(errFile, w)
retval = subprocess.call(comd, 0, None, None, outptr, errptr)
errptr.close()
outptr.close()
if not retval == 0:
errptr = file(errFile, r)
errData = errptr.read()
errptr.close()
raise Exception(Error executing command: + repr(errData))
but after trying to execute this independently, I get the following error
which I am unable to interpret :
Traceback (most recent call last):
File process.py, line 18, in module
retval = subprocess.call(comd, 0, None, None, outptr, errptr)
File /usr/lib/python2.5/subprocess.py, line 443, in call
return Popen(*popenargs, **kwargs).wait()
File /usr/lib/python2.5/subprocess.py, line 593, in __init__
errread, errwrite)
File /usr/lib/python2.5/subprocess.py, line 1135, in _execute_child
raise child_exception
There should be at least one more line in this traceback, and that
line is the most important one.
People will need that line to help you with your problem.
Cheers,
Chris
--
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http://rebertia.com
--
I just want to LIVE while I'm alive.
AB
--
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Re: join a samba domain
Toff wrote:
On 22 déc, 19:37, Toff christophed...@gmail.com wrote:
On 22 déc, 18:59, Jens Henrik Leonhard Jensen
j...@statsbiblioteket.dk wrote:
Toff wrote:
d = c.Win32_ComputerSystem
d.JoinDomainOrWorkGroup(None, 3, mydom, mydompw, radmin\\mydom)
Shouldn't radmin\\mydom be admin\\mydom or radmin\mydom.
Or maybe just admin
/Jens Henrik
you are right but i've got the same error.
the more i look at my script the more i think it s a BUG.
#ALL works great
import wmi
c = wmi.WMI()
for computer in c.Win32_ComputerSystem():
if computer.PartOfDomain:
print computer.Domain #DOMCD
print computer.SystemStartupOptions # (u'Microsoft
Windows XP
Professionnel /noexecute=optin /fastdetect',)
#error message
computer.JoinDomainOrWorkGroup('DOMCD', 'adminLocal',
'admin\
\DOMCD',None,3 )
Try: computer.JoinDomainOrWorkgroup (...)
note the lowercase group
TJG
--
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turtle ?
python newbie here :-) I am trying to get turtle to run but got stuck here: $ python Python 2.5.2 (r252:60911, Aug 5 2008, 16:17:28) [GCC 4.2.2 20071128 (prerelease) (4.2.2-3.1mdv2008.0)] on linux2 Type help, copyright, credits or license for more information. import turtle Traceback (most recent call last): File stdin, line 1, in module ImportError: No module named turtle I have used google to search the web and the newsgroup but got nothing. The Linux distro is Mandriva, if that makes a difference. sai -- http://mail.python.org/mailman/listinfo/python-list
Re: turtle ?
sai wrote: python newbie here :-) I am trying to get turtle to run but got stuck here: $ python Python 2.5.2 (r252:60911, Aug 5 2008, 16:17:28) [GCC 4.2.2 20071128 (prerelease) (4.2.2-3.1mdv2008.0)] on linux2 Type help, copyright, credits or license for more information. import turtle Traceback (most recent call last): File stdin, line 1, in module ImportError: No module named turtle I have used google to search the web and the newsgroup but got nothing. The Linux distro is Mandriva, if that makes a difference. Mandriva have probably split Python into several packages. If so, chances are one of them contains the tkinter GUI library. You should look in your package management tool for a package called python-tkinter, python-tk or similar and install it. HTH Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: Beep
On Mon, Dec 22, 2008 at 10:42 PM, Jeffrey Barish jeff_bar...@earthlink.netwrote: On Ubuntu, it is possible to set visual and audible beeps separately. When I set both, I get the visual beep, but not the audible one. It's not a Python issue -- so I should take this thread to Ubuntu -- because I observe this behavior even when I hit backspace at the beginning of a line in a terminal. -- Jeffrey Barish -- http://mail.python.org/mailman/listinfo/python-list Well, I would try printing a bell character in another language, say ruby or perl, or just in the terminals on the machines that won't print them in python. If you get a bell from those, it's likely some issue with your python installation, otherwise it's likely a problem with Ubuntu configuration somewhere. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
r rt8...@gmail.com wrote: Now thats the kind of friendly banter this group could use. Instead of people acting as if their bowel-movements smell like bakery fresh cinnamon rolls! What an amazing thing to say! Doesn't yours? - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
r rt8...@gmail.com wrote:: The writing is on the Wall! Yes it is, and as always, it says : Mene, mene, tekel epharsim. If my protestant upbringing hasn't failed me, it means: Weighed, and found wanting. - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
On Dec 23, 2:33 am, Hendrik van Rooyen m...@microcorp.co.za wrote: r rt8...@gmail.com wrote: Now thats the kind of friendly banter this group could use. Instead of people acting as if their bowel-movements smell like bakery fresh cinnamon rolls! What an amazing thing to say! Doesn't yours? - Hendrik rerunYou think your ships don't sink?/rerun -- http://mail.python.org/mailman/listinfo/python-list
Very basic question
Hello all,
I would like to calculate a string expression to a float. For example,
I have ('12/5') and I want 2.4 as a result. I tried to use eval but it
only gives me 2 instead of 2.5
Help!!!
Regards,
Sengly
--
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Re: Very basic question
I can hack it by doing eval('1.0*12/5') but is there any better method?
--
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Re: Very basic question
On Dec 23, 4:46 am, Sengly sengly.h...@gmail.com wrote:
Hello all,
I would like to calculate a string expression to a float. For example,
I have ('12/5') and I want 2.4 as a result. I tried to use eval but it
only gives me 2 instead of 2.5
Help!!!
Regards,
Sengly
float('12')/float('5')
2.3999
print float('12')/float('5')
2.4
float(12/5)
2.0
print float(12/5)
2.0
--
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wxPython.button.disabled still catching clicks
Hello! (sorry for my english) I have a problem with buttons in wxPython. When button is disabled (by .Disable() or .Enable(False)) it is grayed out but still receive clicks. Eg. i have button that disable itself, runs long action and enable itself: def onClick(self, evt): self.btn.Enable(False) for i in range (1000): print i self.btn.Enable(True) when for loop is running button is greyed out and when i click on it nothing happens but when loop ends another one is started because button remebered thad i click on it when was diabled. My only idea is to reposition button outside frame instead of disabling it but this solution is...not good. thanks for any help. Ive searched groups, google and it looks that only i have this problem :) -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython.button.disabled still catching clicks
On Dec 23, 4:50 am, mynthon mynth...@gmail.com wrote: Hello! (sorry for my english) I have a problem with buttons in wxPython. When button is disabled (by .Disable() or .Enable(False)) it is grayed out but still receive clicks. Eg. i have button that disable itself, runs long action and enable itself: def onClick(self, evt): self.btn.Enable(False) for i in range (1000): print i self.btn.Enable(True) when for loop is running button is greyed out and when i click on it nothing happens but when loop ends another one is started because button remebered thad i click on it when was diabled. My only idea is to reposition button outside frame instead of disabling it but this solution is...not good. thanks for any help. Ive searched groups, google and it looks that only i have this problem :) No, it is very common. During your for loop, the loop is dominating the process completely. Events are just building up in the app's message queue, and don't get handled until after you yield on control. If you need to run a long task, look into threading, the OnIdle method, the 'multiprocessing' module, or pump messages during your long task. -- http://mail.python.org/mailman/listinfo/python-list
print to console without a line break
Hello All, Is it possible to print something to console without a line break? I tried: sys.stdout.write(Testing something ...) // nothing will be printed time.sleep(1) sys.stdout.write(done\n) // now, the whole string will be printed What I want, is to see Testing something ... first. And after 1 second, to see done (with a line break) The only one solution I have found is to call echo -n 'my_string'. But it is not nice. Because I have to escape all special chars in the string manually. Any advice? Best regards -- Qian Xu -- http://mail.python.org/mailman/listinfo/python-list
Re: print to console without a line break
Qian Xu wrote: Hello All, Is it possible to print something to console without a line break? I tried: sys.stdout.write(Testing something ...) // nothing will be printed time.sleep(1) sys.stdout.write(done\n) // now, the whole string will be printed What I want, is to see Testing something ... first. And after 1 second, to see done (with a line break) I have solved the problem by calling sys.stdout.flush() --Qian Xu -- http://mail.python.org/mailman/listinfo/python-list
Re: Very basic question
On Dec 23, 9:49 pm, Sengly sengly.h...@gmail.com wrote:
I can hack it by doing eval('1.0*12/5') but is there any better method?
from __future__ import division
--
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Re: Very basic question
Sengly sengly.h...@gmail.com wrote:
I would like to calculate a string expression to a float. For example,
I have ('12/5') and I want 2.4 as a result. I tried to use eval but it
only gives me 2 instead of 2.5
py from __future__ import division
py print eval('12/5')
2.4
py print eval('12//5')
2
Or switch to 3.0 which gives you this behaviour without the __future__
import.
--
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Frankly I have no feelings towards penguins one way or the other
-- Arthur C. Clarke
her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump
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Re: Very basic question
Sengly wrote:
I can hack it by doing eval('1.0*12/5') but is there any better method?
Where did you get the string? If you generated it, you might as well
make one or both the operands float to begin with. If you got it as
input, calling eval() on it is a world of security hurt.
The right way would be to parse the expression, so you can evaluate it
as you wish.
Security defects aside, just prepending '1.0 *' doesn't work in general,
because the string could be something like '5 + 12 / 5'. If you replace
each '/' that isn't immediately followed by another '/' with '* 1.0 /',
that might work... or maybe someone fill find counter-examples.
Python 3 does what you want. The / operator is float division. The //
operator is still integer division.
--
--Bryan
--
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Re: String Format Error.
Chris Rebert wrote:
On Mon, Dec 22, 2008 at 10:19 PM, Paulo Repreza pxrepr...@gmail.com wrote:
Hi,
I'm a newbie with python and I recently bought Beginning with Python (Which
is a book I recommend) but the problem that I'm facing it's the following:
This is the code:
#!/usr/bin/python2.5
# Filename: str_format.py
age = 25
name = 'foobar'
print('{0} is {1} years old'.format(name, age))
print('Why is {0} playing with that python?'.format(name))
But when I run the script I receive this error:
Traceback (most recent call last):
File str_format.py, line 7, in module
print('{0} is {1} years old'.format(name, age))
AttributeError: 'str' object has no attribute 'format'
It is an error because of the version that I'm using ? Python 2.5.2 (Debian
lenny)
Yes, Python 2.6 or higher is required to use .format() according to
http://docs.python.org/whatsnew/2.6.html
For a replacement that will work in 2.5, see the % sign as an operator
(sometimes called string interpolation).
regards
Steve
--
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Holden Web LLC http://www.holdenweb.com/
--
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Why MyHDL?
Hello: MyHDL is a Python package for using Python as a Hardware Description Language. A new release is upcoming, and on this occasion we have prepared a page about why MyHDL may be useful to you: http://www.myhdl.org/doku.php/why Regards, Jan -- Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com Python as a hardware description language: http://www.myhdl.org -- http://mail.python.org/mailman/listinfo/python-list
Re: Very basic question
Thank you very much everyone. Regards, -- Sengly -- http://mail.python.org/mailman/listinfo/python-list
On Whose Desktop
Thanks to Barry Warsaw the On Your Desktop blog now has a new entry: http://onyourdesktop.blogspot.com/ Who would you like to see profiled next? regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: On Whose Desktop
On Dec 23, 12:06 pm, Steve Holden st...@holdenweb.com wrote: Thanks to Barry Warsaw the On Your Desktop blog now has a new entry: http://onyourdesktop.blogspot.com/ Who would you like to see profiled next? regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ Guido (of course), Brett Cannon, Martin v Loewis, Jim Hugunin, Ted Leung, Dino Viehland (core developer of IronPython), Titus Brown, Ivan Kristic, Mark Shuttleworth, Tim Golden, Michele Simionato, Thomas Heller, Greg Ewing - any and all of these would be great. Any women in Python you could ask - how about Anna Ravenscroft? Conspicuously missing from the ones you have already done is Steve Holden of course... All the best, Michael Foord -- http://www.ironpythoninaction.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: On Whose Desktop
Steve Holden a écrit : Thanks to Barry Warsaw the On Your Desktop blog now has a new entry: http://onyourdesktop.blogspot.com/ Who would you like to see profiled next? The effbot ? regards Steve -- http://mail.python.org/mailman/listinfo/python-list
Re: Why MyHDL?
hello Jan, Jan Decaluwe wrote: Hello: MyHDL is a Python package for using Python as a Hardware Description Language. A new release is upcoming, and on this occasion we have prepared a page about why MyHDL may be useful to you: http://www.myhdl.org/doku.php/why Very Interesting, I'm no expert at all (but as an exercise I'm just now writing an EDIF-v2 to SystemC converter in Python) , I wonder why I only see comparison with VHDL and SystemVerilog, and not with SystemC ? thanks, Stef -- http://mail.python.org/mailman/listinfo/python-list
SuSE11.1 eclipse 64 pydev can't add python path
Hi I can install pydev using the update manager in eclipse for 64 bit from the SuSE 11.1 repo. But I can't configure pydev without crashing it. I can select the interpreter /usr/bin/python and I do see the System PYTHONPATH Forced builtin libs also looks good. But Apply gives me # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x7f2d7abebaed, pid=6544, tid=139832007596368 # # Java VM: IcedTea 64-Bit Server VM (1.7.0-b24 mixed mode linux-amd64) # Problematic frame: # V [libjvm.so+0x21baed] # # An error report file with more information is saved as: # /home/user/hs_err_pid6544.log # # If you would like to submit a bug report, please visit: # http://icedtea.classpath.org/bugzilla # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. That problem happens also with the recent eclipse-cpp-ganymede-SR1-linux-gtk-x86_64.tar.gz What can be the cause for this problem? Do you know a workaround e.g. manually configuring pydev? Does one have pydev or eclipse working on SuSE11.1? cheers Reimar -- http://mail.python.org/mailman/listinfo/python-list
Re: print to console without a line break
On Tue, 23 Dec 2008 11:50:59 +0100, Qian Xu wrote: Hello All, Is it possible to print something to console without a line break? I tried: sys.stdout.write(Testing something ...) // nothing will be printed time.sleep(1) sys.stdout.write(done\n) // now, the whole string will be printed What I want, is to see Testing something ... first. And after 1 second, to see done (with a line break) The only one solution I have found is to call echo -n 'my_string'. But it is not nice. Because I have to escape all special chars in the string manually. Any advice? Best regards -- Qian Xu If you don't mind an extra space, you can use this: print 'Testing something ...', # note the trailing comma -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython.button.disabled still catching clicks
On Dec 23, 11:58 am, Aaron Brady castiro...@gmail.com wrote:
On Dec 23, 4:50 am, mynthon mynth...@gmail.com wrote:
Hello! (sorry for my english)
I have a problem with buttons in wxPython. When button is disabled
(by .Disable() or .Enable(False)) it is grayed out but still receive
clicks.
Eg. i have button that disable itself, runs long action and enable
itself:
def onClick(self, evt):
self.btn.Enable(False)
for i in range (1000):
print i
self.btn.Enable(True)
when for loop is running button is greyed out and when i click on it
nothing happens but when loop ends another one is started because
button remebered thad i click on it when was diabled. My only idea
is to reposition button outside frame instead of disabling it but this
solution is...not good.
thanks for any help. Ive searched groups, google and it looks that
only i have this problem :)
No, it is very common. During your for loop, the loop is dominating
the process completely. Events are just building up in the app's
message queue, and don't get handled until after you yield on control.
If you need to run a long task, look into threading, the OnIdle
method, the 'multiprocessing' module, or pump messages during your
long task.
ok, maybe someone will need it. I dont know how it works because i
didnt have time to read docs and i cannot explain everything. I used
google and wxPython demo (in tree: wxpython overview / process and
events / process)
class leftPanel(wx.Panel):
def __init__(self, parent, id):
wx.Panel.__init__(self, parent, id, style=wx.BORDER_SUNKEN)
# here you have to define new process, IDLE event, and
onPRocessEnd event
self.process = None
self.GetParent().Bind(wx.EVT_IDLE, self.onIdle)
self.Bind(wx.EVT_END_PROCESS, self.onProcessEnd)
# create button and bind event to it
self.runScriptBtn = wx.Button(self, -1, 'RUN ME!', (10,220))
self.runScriptBtn.Bind(wx.EVT_BUTTON, self.onClick,
self.runScriptBtn)
def onClick(self, evt):
# disable button
self.runScriptBtn.Enable(False)
# here you have to enter command to run
# previusly i heve here exec('python myScript.py')
# but now it will be a subprocess
cmd = 'python xxx1.py'
#create new process
self.process = wx.Process(self)
# dont know what it is for
self.process.Redirect()
# execute cmd command
pid = wx.Execute(cmd, wx.EXEC_ASYNC, self.process)
def onIdle(self, evt):
# beacuse this method is called only when app enters idle mode
# the line below is nedded to simulate entering idle mode
# dont know how it works but it works
evt.RequestMore(True)
# here is some code to catch subprocess output
if self.process is not None:
stream = self.process.GetInputStream()
if stream.CanRead():
text = stream.read()
print text
def onProcessEnd(self, evt):
# here is some code to catch subprocess output
# when it is destroyed
stream = self.process.GetInputStream()
if stream.CanRead():
text = stream.read()
print text
# dont know it is necessary
self.process.CloseOutput()
# remove (clear) process object
self.process.Destroy()
self.process = None
# show button again
self.runScriptBtn.Enable()
--
http://mail.python.org/mailman/listinfo/python-list
Re: Are python objects thread-safe?
Aaron Brady castiro...@gmail.com wrote: Th.1 Th.2 a=X a=Y a=Z You are saying that if 'a=Z' interrupts 'a=Y' at the wrong time, the destructor for 'X' or 'Y' might not get called. Correct? In serial flow, the destructor for X is called, then Y. No, the destructors will be called, but the destructors can do pretty much anything they want so you can't say the assignment is atomic. This isn't actually a threading issue: you don't need multiple threads to experience werid issues here. If you do strange things in a destructor then you can come up with confusing code even with a single thread. Other nasty things can happen if you use dictionaries from multiple threads. You cannot add or remove a dictionary key while iterating over a dictionary. This isn't normally a big issue, but as soon as you try to share the dictionary between threads you'll have to be careful never to iterate through it. These aren't documented, IIRC. Did you just discover them by trial and error? It is documented, but I can't remember where for Python 2.x. For Python 3, PEP 3106 says: As in Python 2.x, mutating a dict while iterating over it using an iterator has an undefined effect and will in most cases raise a RuntimeError exception. (This is similar to the guarantees made by the Java Collections Framework.) -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: no sign() function ?
Steven D'Aprano ste...@remove.this.cybersource.com.au wrote: But this is just duplicating what timeit already does. Trust me, learn to use it, you won't be sorry. Here's a trick that took me a long time to learn: instead of copying your functions into the setup code of timeit, you can just import them. Thanks for the advise, i made the test using timeit and your very interesting method to import... Now i know how to use timeit simply ;-) New results on 1000 float values randomized from -500.0 to +500.0. Each test is timeit(1000) sign_0 : 0.375 sign_1 : 0.444 (+18%) sign_2 : 0.661 (+76%) sign_3 : 0.498 (+33%) It seems it don't change the relative results between the methods. Using timeit make measure accurate and remove print/range footprints. I also try Arnaud's proposition, it make sign_0 just a little better (-1%) -- Pierre-Alain Dorangehttp://microwar.sourceforge.net/ Ce message est sous licence Creative Commons by-nc-sa-2.0 http://creativecommons.org/licenses/by-nc-sa/2.0/fr/ -- http://mail.python.org/mailman/listinfo/python-list
pseudo terminal usage from Python?
I ran into an interesting problem yesterday. The mpstat(1) command on Solaris formats its output like so: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 42 1 1184 812 265 227 12 44 370 11316 2 0 93 1 25 1 933 4472 203 37 75 120 9025 4 0 91 2 17 0 195 4951 201 41 77 130 5145 1 0 94 34 0 117 882 405 171 34 65 210 4495 2 0 93 I'm only interested in presenting the CPU numbers and user+sys values prefixed by a timestamp. For example, the above might be formatted like so: 07:28:46.373328 0 8 1 9 2 6 3 7 The obvious solution might be something simple like this: mpstat 1 | python mympstat.py where mympstat.py does a trival amount of reformatting. The problem is that mpstat recognizes when its output is a pipe and block buffers it so the Python script sees input in massive blobs, not the second-by-second output you'd see running mpstat 1 by itself. I've been reduced to a much more complicated solution which involves forking mpstat with output to a file, then reading the end of that file every second. A three-line Python script balloons into a one-page script. Yuck. Add to that I'm writing this for an admin who is considering Python as a scripting language. Double Yuck. (But not nyuk nyuk, this is not the Stooges.) I suspect there is some magic I can perform with pseudo terminals (this is on Solaris 10.) The documentation for the pty module contains no examples and I've been so far unable to find any using Google. Any pointers/examples? I will gladly add an example to the pty module docs (I have the power!) once I have a couple working examples (maybe one example each of reading and writing?) Thanks, -- Skip Montanaro - s...@pobox.com - http://smontanaro.dyndns.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: SuSE11.1 eclipse 64 pydev can't add python path
On Tue, Dec 23, 2008 at 7:49 AM, Reimar Bauer r.ba...@fz-juelich.de wrote: Hi I can install pydev using the update manager in eclipse for 64 bit from the SuSE 11.1 repo. But I can't configure pydev without crashing it. I can select the interpreter /usr/bin/python and I do see the System PYTHONPATH Forced builtin libs also looks good. But Apply gives me # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x7f2d7abebaed, pid=6544, tid=139832007596368 # # Java VM: IcedTea 64-Bit Server VM (1.7.0-b24 mixed mode linux-amd64) # Problematic frame: # V [libjvm.so+0x21baed] # # An error report file with more information is saved as: # /home/user/hs_err_pid6544.log # # If you would like to submit a bug report, please visit: # http://icedtea.classpath.org/bugzilla # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. That problem happens also with the recent eclipse-cpp-ganymede-SR1-linux-gtk-x86_64.tar.gz What can be the cause for this problem? Do you know a workaround e.g. manually configuring pydev? Does one have pydev or eclipse working on SuSE11.1? cheers Reimar This isn't a problem with PyDev. This is a known bug in the 64-bit Java, both Sun and OpenJDK. It was fixed in the really recent updates (Sun 6u10 and OpenJDK 6b12, I think), which I guess SuSE doesn't have yet. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
PIL - font kerning
Hey all, anybody know, if there´s a way to specify the kerning of a font, when you draw text with PIL? I´d like to achieve the same effect that you get, when you set a negative kerning in Gimp/Photshop - ie. reduce the spacing between glyphs. Can PIL do that or do I use another lib for that? Thx for any pointers some nice xmas days to U all! carsten -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
On Mon, 22 Dec 2008 21:05:22 -0800, r wrote: On Dec 22, 10:09 pm, Ben Kaplan bs...@case.edu wrote: That's just because most of us don't say anything unless we have something useful to say. We prefer to let the experts answer the questions, but we read the threads so we can benefit from them. OK Ben, So you are saying 1.) do not question the gods! Hmmm... when we talk about something we don't know, only trash would come out of our mouth. 2.) speak only when spoken to! He (Ben) does not say anything remotely like that. 3.) do not have an opinion! Again, you're adding sauce, meat, beef, and spices to his statement. Somehow this reminds me of some old and brainwashing religions, Not an OSS project. Just observations Ben. Isn't it you that have been accused of religionizing python by many people in this list? -- http://mail.python.org/mailman/listinfo/python-list
Re: On Whose Desktop
Fuzzyman wrote: On Dec 23, 12:06 pm, Steve Holden st...@holdenweb.com wrote: Thanks to Barry Warsaw the On Your Desktop blog now has a new entry: http://onyourdesktop.blogspot.com/ Who would you like to see profiled next? Guido (of course), Brett Cannon, Martin v Loewis, Jim Hugunin, Ted Leung, Dino Viehland (core developer of IronPython), Titus Brown, Ivan Kristic, Mark Shuttleworth, Tim Golden, Michele Simionato, Thomas Heller, Greg Ewing - any and all of these would be great. Any women in Python you could ask - how about Anna Ravenscroft? Bruno Desthuilliers wrote: The effbot ? s...@pobox.com wrote: Maybe Martin v. Loewis? He contributes so much to Python. I met him once several years ago at a Python conference (or maybe it was still just a workshop then), but beyond seeing his titanic contributions to Python, I know little about the guy. I hope *everyone* knows that Martin was the winner of this year's Frank Willison Award: http://www.python.org/community/awards/frank-willison/#martin-von-l-wis-2008 Great! Keep the suggestions coming, please! regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
* r (Mon, 22 Dec 2008 10:44:32 -0800 (PST)) Steve Holden What makes you assume this is a zero-sum game, and that Python won't survive if any other language becomes popular. Every language borrows from those that came before it. Terms like outright plagiarism don't encourage rational debate, and make you seem like a troll who is more interested in stirring up controversy than actually doing things to help promote the language. This is a war Steve, and i will explain why. Python does not need to compete with perl, lisp, C, basic, etc, etc. WHY, well because python is SO radically different than those languages. Ruby on the other hand, took most from python, the only difference is Ruby's full OO integration.(12.method()). Since Ruby is so similar to python [...] You don't have a single clue about neither Python nor Ruby: 'According to the Ruby FAQ, If you like Perl, you will like Ruby and be right at home with its syntax. [...] If you like Python, you may or may not be put off by the huge difference in design philosophy between Python and Ruby/Perl.'[1] Thorsten [1] http://en.wikipedia.org/wiki/Ruby_(programming_language)#Semantics -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
On Mon, 22 Dec 2008 22:32:17 -0500 Aaron Stepp stepp.aa...@gmail.com wrote: Instead of writing a long list of initializations like so: A = [ ] B = [ ] ... Y = [ ] Z = [ ] I'd like to save space by more elegantly turning this into a loop. If Well, if all you want is a loop: for v in vars: locals()[v] = [] It's hard to tell if that's what you actually need though without deeper analysis of your requirements. -- 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: Python's popularity
On Tue, Dec 23, 2008 at 12:05 AM, r rt8...@gmail.com wrote: On Dec 22, 10:09 pm, Ben Kaplan bs...@case.edu wrote: That's just because most of us don't say anything unless we have something useful to say. We prefer to let the experts answer the questions, but we read the threads so we can benefit from them. OK Ben, So you are saying 1.) do not question the gods! 2.) speak only when spoken to! 3.) do not have an opinion! Somehow this reminds me of some old and brainwashing religions, Not an OSS project. Just observations Ben. You're the one who keeps bringing up the need to spread python. For most people, this is a forum to ask questions and have experts respond to them. Most people who post here aren't looking for your opinion, they want answers. If you know the answer to a question, answer it. If not, read the answers of people who have seen it before. When you post your opinions, you're just creating more noise. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
s...@pobox.com wrote: I ran into an interesting problem yesterday. The mpstat(1) command on Solaris formats its output like so: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 42 1 1184 812 265 227 12 44 370 11316 2 0 93 1 25 1 933 4472 203 37 75 120 9025 4 0 91 2 17 0 195 4951 201 41 77 130 5145 1 0 94 34 0 117 882 405 171 34 65 210 4495 2 0 93 I'm only interested in presenting the CPU numbers and user+sys values prefixed by a timestamp. For example, the above might be formatted like so: 07:28:46.373328 0 8 1 9 2 6 3 7 The obvious solution might be something simple like this: mpstat 1 | python mympstat.py where mympstat.py does a trival amount of reformatting. The problem is that mpstat recognizes when its output is a pipe and block buffers it so the Python script sees input in massive blobs, not the second-by-second output you'd see running mpstat 1 by itself. I've been reduced to a much more complicated solution which involves forking mpstat with output to a file, then reading the end of that file every second. A three-line Python script balloons into a one-page script. Yuck. Add to that I'm writing this for an admin who is considering Python as a scripting language. Double Yuck. (But not nyuk nyuk, this is not the Stooges.) I suspect there is some magic I can perform with pseudo terminals (this is on Solaris 10.) The documentation for the pty module contains no examples and I've been so far unable to find any using Google. Any pointers/examples? I will gladly add an example to the pty module docs (I have the power!) once I have a couple working examples (maybe one example each of reading and writing?) Look at the pexpect module - you can run interactive tasks through that. regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: print to console without a line break
On Tue, 2008-12-23 at 13:18 +, Lie Ryan wrote: On Tue, 23 Dec 2008 11:50:59 +0100, Qian Xu wrote: Hello All, Is it possible to print something to console without a line break? I tried: sys.stdout.write(Testing something ...) // nothing will be printed time.sleep(1) sys.stdout.write(done\n) // now, the whole string will be printed Probably because your stdout is line-buffered. Try: sys.stdout.write(Testing something...) sys.stout.flush() # flush the stdout buffer -- http://mail.python.org/mailman/listinfo/python-list
Re: python3 urlopen(...).read() returns bytes
ajaksu wrote: On Dec 22, 9:05 pm, Christian Heimes li...@cheimes.de wrote: ajaksu schrieb: That said, a decode to declared HTTP header encoding version of urlopen could be useful to give some users the output they want (text from network io) or to make it clear why bytes is the safe way. Yeah, your idea sounds both useful and feasible. A patch is welcome! :) Would monkeypatching what urlopen returns be good enough or should we aim at a cleaner implementation? If you want to do it right ... It should be a clean patch against the py3k svn branch including documentation and a unit test. Don't worry! It's not as hard as it sounds. Besides Python core development is fun. :) Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: no sign() function ?
All algorithm including my own suffer from one mistake. Nobody accounts for NaN (not a number). You have to check for NaNs, too. NaNs have no sign at all. You could also try to do some fancy bit mask operation like ord(struct.pack(d, 0.)[7]) 0x80 0 ord(struct.pack(d, -0.)[7]) 0x80 128 But you have to take care of little endian, big endian and mixd endian IEEE 754 platforms, too. There are also platforms that don't have IEEE 754 floats at all ... Have fun :) Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: print to console without a line break
Albert Hopkins wrote: On Tue, 2008-12-23 at 13:18 +, Lie Ryan wrote: Probably because your stdout is line-buffered. Try: sys.stdout.write(Testing something...) sys.stout.flush() # flush the stdout buffer Thanks. This works for me ^^) -- http://mail.python.org/mailman/listinfo/python-list
Re: print to console without a line break
Lie Ryan wrote: If you don't mind an extra space, you can use this: print 'Testing something ...', # note the trailing comma Thanks. However, the contents will be saved in buffer and will not be shown until print (last piece) sys.stdout.flush() can solve this problem :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
D'Arcy J.M. Cain wrote:
On Mon, 22 Dec 2008 22:32:17 -0500
Aaron Stepp stepp.aa...@gmail.com wrote:
Instead of writing a long list of initializations like so:
A = [ ]
B = [ ]
...
Y = [ ]
Z = [ ]
I'd like to save space by more elegantly turning this into a loop. If
Well, if all you want is a loop:
for v in vars:
locals()[v] = []
Note that this isn't guaranteed to work. While locals() will return a
dict containing the names and values from the local namespace, you won't
affect the local namespace by assigning values to the appropriate keys:
def f():
... a = hello
... locals()[a] = goodbye
... print a
...
f()
hello
If you look at the function's code you will see that the local a is
accessed using the LOAD_FAST and STORE_FAST opcodes, which take
advantage of the knowledge that the name is local - the interpreter
analyzed the function body looking for assignments to non-globals, and
optimizes its treatment of such names.
dis.dis(f)
2 0 LOAD_CONST 1 ('hello')
3 STORE_FAST 0 (a)
3 6 LOAD_CONST 2 ('goodbye')
9 LOAD_GLOBAL 0 (locals)
12 CALL_FUNCTION0
15 LOAD_CONST 3 ('a')
18 STORE_SUBSCR
4 19 LOAD_FAST0 (a)
22 PRINT_ITEM
23 PRINT_NEWLINE
24 LOAD_CONST 0 (None)
27 RETURN_VALUE
It's hard to tell if that's what you actually need though without
deeper analysis of your requirements.
I think it's unlikely that the OP really does need to create names
dynamically, and should look at using either a dict indexed by the
letters of self.__abet, or a list indexed from 0 to 24 instead. But you
*are* correct about the need for a little more information ;-)
regards
Steve
--
Steve Holden+1 571 484 6266 +1 800 494 3119
Holden Web LLC http://www.holdenweb.com/
--
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Re: pseudo terminal usage from Python?
Steve Look at the pexpect module - you can run interactive tasks Steve through that. Thanks. Worked like a charm. -- Skip Montanaro - s...@pobox.com - http://smontanaro.dyndns.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
import random
from rtcmix import *
from chimes_source import * # Chime.play()
from rhythmblock import * # rhythmBlock.rhythmTwist() and
rhythmBlock.printStuff()
from pitchblock import * # pitchBlock.pitchTwist() and
pitchBlock.printStuff()
from lenEval import * #greaterThan.sovler()
indexrand = random.Random()
indexrand.seed(2)
chime = Chime()
notes = pitchBlock()
rhythm = rhythmBlock()
solve = greaterThan()
class arrayBlock:
def __init__(self, theTempo, start):
self.__A = []
self.__B = []
self.__start = start
self.__tempo = theTempo
def player(self, length, tempo, octave, pan, seed):
tempo = (120, self.__tempo)
for a in range(length):
one = indexrand.randint(0, 3)
two = indexrand.randint(0, 7)
self.__A = self.__A + notes.pitchTwist(one , two)
for b in range(length):
one = indexrand.randint(0, 3)
two = indexrand.randint(0, 7)
self.__B = self.__B + rhythm.rhythmTwist(one , two)
lenA = len(self.__A)
lenB = len(self.__B)
var = solve.solver(lenA, lenB)
for c in range(var):
print self.__A[c]
self.__start = self.__start + tb(self.__B[var])
chime.play(self.__start, self.__A[var], octave, pan,
seed)
This almost does exactly what I want, and is far cleaner than my
previous attempts.
The only problem is that now all my arguments are being passed as zeros!
I assume this has to do with WHEN I'm referencing self.__A and self.__B?
AS
On Dec 23, 2008, at 10:20 AM, Steve Holden wrote:
D'Arcy J.M. Cain wrote:
On Mon, 22 Dec 2008 22:32:17 -0500
Aaron Stepp stepp.aa...@gmail.com wrote:
Instead of writing a long list of initializations like so:
A = [ ]
B = [ ]
...
Y = [ ]
Z = [ ]
I'd like to save space by more elegantly turning this into a
loop. If
Well, if all you want is a loop:
for v in vars:
locals()[v] = []
Note that this isn't guaranteed to work. While locals() will return a
dict containing the names and values from the local namespace, you
won't
affect the local namespace by assigning values to the appropriate
keys:
def f():
... a = hello
... locals()[a] = goodbye
... print a
...
f()
hello
If you look at the function's code you will see that the local a is
accessed using the LOAD_FAST and STORE_FAST opcodes, which take
advantage of the knowledge that the name is local - the interpreter
analyzed the function body looking for assignments to non-globals, and
optimizes its treatment of such names.
dis.dis(f)
2 0 LOAD_CONST 1 ('hello')
3 STORE_FAST 0 (a)
3 6 LOAD_CONST 2 ('goodbye')
9 LOAD_GLOBAL 0 (locals)
12 CALL_FUNCTION0
15 LOAD_CONST 3 ('a')
18 STORE_SUBSCR
4 19 LOAD_FAST0 (a)
22 PRINT_ITEM
23 PRINT_NEWLINE
24 LOAD_CONST 0 (None)
27 RETURN_VALUE
It's hard to tell if that's what you actually need though without
deeper analysis of your requirements.
I think it's unlikely that the OP really does need to create names
dynamically, and should look at using either a dict indexed by the
letters of self.__abet, or a list indexed from 0 to 24 instead. But
you
*are* correct about the need for a little more information ;-)
regards
Steve
--
Steve Holden+1 571 484 6266 +1 800 494 3119
Holden Web LLC http://www.holdenweb.com/
--
http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
r rt8...@gmail.com wrote in news:ae1bb365-7755-4c5f-8166-e704c51a7...@i20g2000prf.googlegro ups.com: Oh Steve... Listen, my words are ment as a wake-up-call to all who still love Python, and i believe you are one of them. Maybe old age has slowed your hand, that's OK, Us youngsters will take the helm. And be serious, do you really think this group is read by hundreds-of- thousands of news readers? I wish it were, but I highly doubt it. Thus spake the artilleryman from Horsell Common! Adrian Cherry -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
On Tue, 23 Dec 2008 10:20:59 -0500 Steve Holden st...@holdenweb.com wrote: D'Arcy J.M. Cain wrote: Well, if all you want is a loop: for v in vars: locals()[v] = [] Note that this isn't guaranteed to work. While locals() will return a dict containing the names and values from the local namespace, you won't affect the local namespace by assigning values to the appropriate keys: def f(): ... a = hello ... locals()[a] = goodbye ... print a This was my test: locals()['x'] = hello x 'hello' locals()['x'] = goodbye x 'goodbye' Just didn't want people to think that I post without testing. In any case, even if that worked as expected I am pretty sure that it is the wrong solution but without knowing more about what the OP is doing it is impossible to know what the right answer is. -- 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: I always wonder ...
On Dec 22, 11:12 pm, ajaksu aja...@gmail.com wrote: On Dec 22, 9:24 pm, r rt8...@gmail.com wrote: You know what i hate more than a troll, a spineless jellyfish who goes around rating peoples post with one star. You are the lowest form of life. You are the same type of person who would key someones car in the parking lot. You do not have the balls to face you enemy. If who made a rating were visible, then i would have respect for you, but since you lurk in the shadows, you are scum. Come out and face me if you dare! I never have rated a post UNLESS i rate it with 5 stars, WHY, you ask, Because my balls are so big i walk around bow-legged! F'in Cowards! That would be me, for at least a dozen of your posts. Glad to know it was more effective than telling you to shut up or calm down. Cnidaria-ly y'rs, Daniel Well that shows that even lads with tiny nads can be brave, any of the other trolls want to expose them selfs? -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
On 2008-12-23, s...@pobox.com s...@pobox.com wrote: I ran into an interesting problem yesterday. The mpstat(1) command on Solaris formats its output like so: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 42 1 1184 812 265 227 12 44 370 11316 2 0 93 1 25 1 933 4472 203 37 75 120 9025 4 0 91 2 17 0 195 4951 201 41 77 130 5145 1 0 94 34 0 117 882 405 171 34 65 210 4495 2 0 93 I'm only interested in presenting the CPU numbers and user+sys values prefixed by a timestamp. For example, the above might be formatted like so: 07:28:46.373328 0 8 1 9 2 6 3 7 The obvious solution might be something simple like this: mpstat 1 | python mympstat.py where mympstat.py does a trival amount of reformatting. The problem is that mpstat recognizes when its output is a pipe and block buffers it so the Python script sees input in massive blobs, not the second-by-second output you'd see running mpstat 1 by itself. Are you sure it's not Python buffering its input? Have you tried python -u mympstat.py? I suspect there is some magic I can perform with pseudo terminals (this is on Solaris 10.) The documentation for the pty module contains no examples and I've been so far unable to find any using Google. I had a Linux pty example running once upon a time. If python -u doesn't work post again, and I'll try to find it. -- Grant Edwards grante Yow! Please come home with at me ... I have Tylenol!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
On Dec 23, 8:21 am, Thorsten Kampe thors...@thorstenkampe.de wrote: * r (Mon, 22 Dec 2008 10:44:32 -0800 (PST)) Steve Holden What makes you assume this is a zero-sum game, and that Python won't survive if any other language becomes popular. Every language borrows from those that came before it. Terms like outright plagiarism don't encourage rational debate, and make you seem like a troll who is more interested in stirring up controversy than actually doing things to help promote the language. This is a war Steve, and i will explain why. Python does not need to compete with perl, lisp, C, basic, etc, etc. WHY, well because python is SO radically different than those languages. Ruby on the other hand, took most from python, the only difference is Ruby's full OO integration.(12.method()). Since Ruby is so similar to python [...] You don't have a single clue about neither Python nor Ruby: 'According to the Ruby FAQ, If you like Perl, you will like Ruby and be right at home with its syntax. [...] If you like Python, you may or may not be put off by the huge difference in design philosophy between Python and Ruby/Perl.'[1] Thorsten [1]http://en.wikipedia.org/wiki/Ruby_(programming_language)#Semantics Thats Thurstan, thank you very much! :) -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
D'Arcy J.M. Cain wrote: On Tue, 23 Dec 2008 10:20:59 -0500 Steve Holden st...@holdenweb.com wrote: D'Arcy J.M. Cain wrote: Well, if all you want is a loop: for v in vars: locals()[v] = [] Note that this isn't guaranteed to work. While locals() will return a dict containing the names and values from the local namespace, you won't affect the local namespace by assigning values to the appropriate keys: def f(): ... a = hello ... locals()[a] = goodbye ... print a This was my test: locals()['x'] = hello x 'hello' locals()['x'] = goodbye x 'goodbye' Just didn't want people to think that I post without testing. In any case, even if that worked as expected I am pretty sure that it is the wrong solution but without knowing more about what the OP is doing it is impossible to know what the right answer is. The thing you overlooked was that the locals of a function are special. The locals of a module are the globals! def lisg(): ... return locals() is globals() ... locals() is globals() True lisg() False regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Hmmm... No, I hadn't considered that. I'll check it out. Thanks... Grant I had a Linux pty example running once upon a time. If python Grant -u doesn't work post again, and I'll try to find it. Would be helpful even if I don't need it for this task, as I've not been able to find any simple examples on the net. (Maybe there's a recipe at ActiveState, but Google didn't pick up anything with the search terms I was using.) Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
On Dec 23, 10:12 am, je.s.t...@hehxduhmp.org wrote: r rt8...@gmail.com wrote: You are the epitimy of an internet troll. A troll tries to hide his identity. Why are you so concerned about your TRUE identity. Are the I've already stated, and you've already proven, that it's pretty trivial to ascertain my true identity, if one actually cares. OTOH, that's *not* the case with you. Who is hiding now? I told you, my name is Thurstan Howell III. Do you want to know my favorite color too? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
On Dec 23, 8:21 am, Thorsten Kampe thors...@thorstenkampe.de wrote: You don't have a single clue about neither Python nor Ruby: 'According to the Ruby FAQ, If you like Perl, you will like Ruby and be right at home with its syntax. [...] If you like Python, you may or may not be put off by the huge difference in design philosophy between Python and Ruby/Perl.'[1] So you read the preface to the tut and that somehow makes you more than a R00b n00b? Come on! -- http://mail.python.org/mailman/listinfo/python-list
Re: no sign() function ?
On Dec 23, 2:59 pm, Christian Heimes li...@cheimes.de wrote:
All algorithm including my own suffer from one mistake. Nobody accounts
for NaN (not a number). You have to check for NaNs, too. NaNs have no
sign at all.
I think that's not quite true: NaNs have a sign; it's just not
accorded any particular meaning by IEEE 754---in particular,
the standard says nothing about the sign of a NaN result
for most arithmetic operations. However, the sign bit of
a NaN does play its usual role in operations like
copysign, abs, negation. For example, here's a Python
2.6 session on OS X, where the 'default' nan is negative,
in the sense that its sign bit is set:
nan = float('nan')
from math import copysign
copysign(5.0, nan)
-5.0
copysign(5.0, -nan)
5.0
copysign(5.0, abs(nan))
5.0
Mark
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Re: no sign() function ?
On Dec 22, 9:18 am, Christian Heimes li...@cheimes.de wrote: Sure? :) Are you aware that the IEEE 754 standard makes a difference between the floats +0.0 and -0.0? from math import atan2 def sign(x): if x 0 or (x == 0 and atan2(x, -1.) 0.): return 1 else: return -1 Is x ** 0 0. instead of atan2(x, -1.) 0. unreliable across platforms? -- http://mail.python.org/mailman/listinfo/python-list
Get applications to open a given file (Mac and, or Windows)
Under Linux/Unix I use GIO (pygobject) or gnome-vfs-python to get a list of installed applications that can open given file (for example image in graphics software). Is there something that can be used for MS Windows or Mac OS X? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's popularity
Benjamin Kaplin wrote: You're the one who keeps bringing up the need to spread python. For most people, this is a forum to ask questions and have experts respond to them. Most people who post here aren't looking for your opinion, they want answers. If you know the answer to a question, answer it. If not, read the answers of people who have seen it before. When you post your opinions, you're just creating more noise. School time son, This forum is much more than a question answer session, son. Sure people are welcome to ask a Python related question. But this forum is really the main highway of Python development and future. If your a n00b go to the Python forum.org, you will feel more comfy over there. If you have no opinion(Benjamin) thats your perogitive, don't tell me how to live my life, or what I should do when i visit this forum. Do I go to any of your threads and start a ruckus? NO, because if i do not like what you are saying I will just ignore it. Take an example son! Sure i may have went off in thread, by i have kept my thought true to the thread subject. A troll go's from thread to thread posting off subject insults and attacks on other posters... hmmm, i have seen some of those kind in this thread?? Know of who i speak, Bennie? -- http://mail.python.org/mailman/listinfo/python-list
Re: no sign() function ?
On Dec 23, 4:27 pm, ajaksu aja...@gmail.com wrote: Is x ** 0 0. instead of atan2(x, -1.) 0. unreliable across platforms? x**0 doesn't distinguish between x = -0.0 and x = 0.0. I suspect you're confusing -0.0**0.0 with (-0.0)**0.0. Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: On Whose Desktop
On Dec 23, 8:19 am, Steve Holden st...@holdenweb.com wrote: Fuzzyman wrote: On Dec 23, 12:06 pm, Steve Holden st...@holdenweb.com wrote: Thanks to Barry Warsaw the On Your Desktop blog now has a new entry: http://onyourdesktop.blogspot.com/ Who would you like to see profiled next? Guido (of course), Brett Cannon, Martin v Loewis, Jim Hugunin, Ted Leung, Dino Viehland (core developer of IronPython), Titus Brown, Ivan Kristic, Mark Shuttleworth, Tim Golden, Michele Simionato, Thomas Heller, Greg Ewing - any and all of these would be great. Any women in Python you could ask - how about Anna Ravenscroft? Bruno Desthuilliers wrote: The effbot ? s...@pobox.com wrote: Maybe Martin v. Loewis? He contributes so much to Python. I met him once several years ago at a Python conference (or maybe it was still just a workshop then), but beyond seeing his titanic contributions to Python, I know little about the guy. I hope *everyone* knows that Martin was the winner of this year's Frank Willison Award: http://www.python.org/community/awards/frank-willison/#martin-von-l-w... Great! Keep the suggestions coming, please! +1 whose (posessive) -- http://mail.python.org/mailman/listinfo/python-list
Re: On Whose Desktop
Aaron Brady castiro...@gmail.com writes: +1 whose (posessive) -1 posessive :) -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: String Format Error.
Thank You!
On Tue, Dec 23, 2008 at 3:49 AM, Steve Holden st...@holdenweb.com wrote:
Chris Rebert wrote:
On Mon, Dec 22, 2008 at 10:19 PM, Paulo Repreza pxrepr...@gmail.com
wrote:
Hi,
I'm a newbie with python and I recently bought Beginning with Python
(Which
is a book I recommend) but the problem that I'm facing it's the
following:
This is the code:
#!/usr/bin/python2.5
# Filename: str_format.py
age = 25
name = 'foobar'
print('{0} is {1} years old'.format(name, age))
print('Why is {0} playing with that python?'.format(name))
But when I run the script I receive this error:
Traceback (most recent call last):
File str_format.py, line 7, in module
print('{0} is {1} years old'.format(name, age))
AttributeError: 'str' object has no attribute 'format'
It is an error because of the version that I'm using ? Python 2.5.2
(Debian
lenny)
Yes, Python 2.6 or higher is required to use .format() according to
http://docs.python.org/whatsnew/2.6.html
For a replacement that will work in 2.5, see the % sign as an operator
(sometimes called string interpolation).
regards
Steve
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Holden Web LLC http://www.holdenweb.com/
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Re: wxPython.button.disabled still catching clicks
On Dec 23, 7:27 am, mynthon mynth...@gmail.com wrote:
On Dec 23, 11:58 am, Aaron Brady castiro...@gmail.com wrote:
On Dec 23, 4:50 am, mynthon mynth...@gmail.com wrote:
Hello! (sorry for my english)
I have a problem with buttons in wxPython. When button is disabled
(by .Disable() or .Enable(False)) it is grayed out but still receive
clicks.
Eg. i have button that disable itself, runs long action and enable
itself:
def onClick(self, evt):
self.btn.Enable(False)
for i in range (1000):
print i
self.btn.Enable(True)
when for loop is running button is greyed out and when i click on it
nothing happens but when loop ends another one is started because
button remebered thad i click on it when was diabled. My only idea
is to reposition button outside frame instead of disabling it but this
solution is...not good.
thanks for any help. Ive searched groups, google and it looks that
only i have this problem :)
No, it is very common. During your for loop, the loop is dominating
the process completely. Events are just building up in the app's
message queue, and don't get handled until after you yield on control.
If you need to run a long task, look into threading, the OnIdle
method, the 'multiprocessing' module, or pump messages during your
long task.
ok, maybe someone will need it. I dont know how it works because i
didnt have time to read docs and i cannot explain everything. I used
google and wxPython demo (in tree: wxpython overview / process and
events / process)
class leftPanel(wx.Panel):
def __init__(self, parent, id):
wx.Panel.__init__(self, parent, id, style=wx.BORDER_SUNKEN)
# here you have to define new process, IDLE event, and
onPRocessEnd event
self.process = None
self.GetParent().Bind(wx.EVT_IDLE, self.onIdle)
self.Bind(wx.EVT_END_PROCESS, self.onProcessEnd)
# create button and bind event to it
self.runScriptBtn = wx.Button(self, -1, 'RUN ME!', (10,220))
self.runScriptBtn.Bind(wx.EVT_BUTTON, self.onClick,
self.runScriptBtn)
def onClick(self, evt):
# disable button
self.runScriptBtn.Enable(False)
# here you have to enter command to run
# previusly i heve here exec('python myScript.py')
# but now it will be a subprocess
cmd = 'python xxx1.py'
#create new process
self.process = wx.Process(self)
# dont know what it is for
self.process.Redirect()
# execute cmd command
pid = wx.Execute(cmd, wx.EXEC_ASYNC, self.process)
def onIdle(self, evt):
# beacuse this method is called only when app enters idle mode
# the line below is nedded to simulate entering idle mode
# dont know how it works but it works
evt.RequestMore(True)
# here is some code to catch subprocess output
if self.process is not None:
stream = self.process.GetInputStream()
if stream.CanRead():
text = stream.read()
print text
def onProcessEnd(self, evt):
# here is some code to catch subprocess output
# when it is destroyed
stream = self.process.GetInputStream()
if stream.CanRead():
text = stream.read()
print text
# dont know it is necessary
self.process.CloseOutput()
# remove (clear) process object
self.process.Destroy()
self.process = None
# show button again
self.runScriptBtn.Enable()
I'm pretty sure there's a better way to do this. If you disable the
button and click on it, you'll notice that it isn't firing events, so
something else is going on here. It seems like the wx.Frame or
wx.Application is queuing the mouse button clicks or something. I
would post to the wxPython mailing list: http://wxpython.org/maillist.php
They'll be better able to address this and they'll probably have a
simpler solution too.
Mike
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Re: Python's popularity
r rt8...@gmail.com wrote: I've already stated, and you've already proven, that it's pretty trivial to ascertain my true identity, if one actually cares. OTOH, that's *not* the case with you. Who is hiding now? I told you, my name is Thurstan Howell III. Do you want to know my favorite color too? Only if it's pythonic. -- Pierre-Alain Dorangehttp://microwar.sourceforge.net/ Ce message est sous licence Creative Commons by-nc-sa-2.0 http://creativecommons.org/licenses/by-nc-sa/2.0/fr/ -- http://mail.python.org/mailman/listinfo/python-list
[Offtopic] Re: I always wonder ...
r rt8...@gmail.com wrote: [...] Well that shows that even lads with tiny nads can be brave, any of the other trolls want to expose them selfs? This thread is offtopic, please just keep silent and let it be closed... -- Pierre-Alain Dorangehttp://microwar.sourceforge.net/ Ce message est sous licence Creative Commons by-nc-sa-2.0 http://creativecommons.org/licenses/by-nc-sa/2.0/fr/ -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
On 2008-12-23, s...@pobox.com s...@pobox.com wrote: Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Hmmm... No, I hadn't considered that. I'll check it out. Thanks... Grant I had a Linux pty example running once upon a time. If python Grant -u doesn't work post again, and I'll try to find it. Would be helpful even if I don't need it for this task, as I've not been able to find any simple examples on the net. (Maybe there's a recipe at ActiveState, but Google didn't pick up anything with the search terms I was using.) I'll try to dig it up. The application for which I was trying to use ptys needed to communication modem control/status line state info between master and slave (as well as parity and word-length settings), so I abandoned ptys when I found they only implement a small subset of the icotl's that are defined for tty devices. I've proposed enhancing the Linux pty driver so that it can actually be used to simulate a serial port, but the proposal has been ignored so far. -- Grant Edwards grante Yow! I'm definitely not at in Omaha! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Nope. -u unbuffers stdout and stderr, not stdin. It really must be mpstat being uncooperative. Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Are python objects thread-safe?
En Tue, 23 Dec 2008 11:30:25 -0200, Duncan Booth duncan.bo...@invalid.invalid escribió: Aaron Brady castiro...@gmail.com wrote: Th.1 Th.2 a=X a=Y a=Z You are saying that if 'a=Z' interrupts 'a=Y' at the wrong time, the destructor for 'X' or 'Y' might not get called. Correct? In serial flow, the destructor for X is called, then Y. No, the destructors will be called, but the destructors can do pretty much anything they want so you can't say the assignment is atomic. This isn't actually a threading issue: you don't need multiple threads to experience werid issues here. If you do strange things in a destructor then you can come up with confusing code even with a single thread. A simple example showing what you said: py class A: ... def __del__(self): ... global a ... a = None ... py a = A() py a = 3 py print a None -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: python3 urlopen(...).read() returns bytes
On Dec 23, 12:51 pm, Christian Heimes li...@cheimes.de wrote: If you want to do it right ... It should be a clean patch against the py3k svn branch Done including documentation This thread is a good start :) and a unit test. Doing this now. Daniel -- http://mail.python.org/mailman/listinfo/python-list
Symposium “Visualization and Human-Computer” wit hin the IRF’2009 Conference – Announce Call for Papers
(Apologies for cross-posting) Symposium on “Visualization and Human-Computer” 3rd International Conference on Integrity, Reliability Failure (IRF’2009) Faculty of Engineering, University of Porto, Porto – PORTUGAL, 20-24 July 2009 http://paginas.fe.up.pt/clme/IRF2009/index.htm (We would appreciate if you could distribute this information by your colleagues and co-workers.) Dear Colleague, Within the 3rd International Conference on Integrity, Reliability Failure (IRF’2009), to be held in FEUP, Porto, Portugal, in July 20-24, 2009, we are organizing the Symposium “Visualization and Human- Computer”. Examples of some topics that will be considered are: Scientific Data Visualization, Spatial Data in Visualization, Data Processing and Analysis, Information Visualization, Visualization Techniques, Large Data Visualization, Image Processing and Analysis, Hardware for Visualization, Human-Computer Interaction, Visual Analytics, Visual Data Mining and Knowledge Discovery, Human Perception, Interface Design, Evaluation and User Studies, Software Development, Grid and High Performance Computing, Applications in Engineering, Biomechanics, Bioinformatics, Bioimaging, Physical, Earth, Space, Environmental and Information Sciences. Due to your research activities in those fields, we would like to invite you to submit your work and participate in the Symposium “Visualization and Human-Computer”. For instructions and submission, please access to the conference website at: http://paginas.fe.up.pt/clme/IRF2009/index.htm Please note that, when submitting your work you should select the Symposium #7 “Visualization and Human-Computer”. Important dates: - February 28, 2009: Deadline for abstract submission; - March 21, 2009: Notification of abstract acceptance; - May 10, 2009: Receipt of Full Papers; - July 20-24, 2009: Conference Events. Kind regards, João Manuel R. S. Tavares (University of Porto, Portugal, tava...@fe.up.pt) Renato Natal Jorge (University of Porto, Portugal, rna...@fe.up.pt) (Symposium organizers) -- http://mail.python.org/mailman/listinfo/python-list
Re: pseudo terminal usage from Python?
On 2008-12-23, s...@pobox.com s...@pobox.com wrote: Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Nope. -u unbuffers stdout and stderr, not stdin. It really must be mpstat being uncooperative. That's not what my python man page says: -u Force stdin, stdout and stderr to be totally unbuffered. On systems where it matters, also put stdin, stdout and stderr in binary mode. That's for 2.5.2, but that's how I remember previous versions working as well. -- Grant Edwards grante Yow! We have DIFFERENT at amounts of HAIR -- visi.com -- http://mail.python.org/mailman/listinfo/python-list
2to3 used in the Shootout
They have translated the Python benchmarks of the Shootout site from
Py2 to Py3 using 2to3:
http://shootout.alioth.debian.org/u32/benchmark.php?test=alllang=python3
It shows some performance bugs of Python3 itself (especially
regarding the binary-trees benchmark, that was unexpected by me), and
two points where 2to3 may be improved, for example after the
translation this gives error:
table=string.maketrans('ACBDGHK\nMNSRUTWVYacbdghkmnsrutwvy',
'TGVHCDM
\nKNSYAAWBRTGVHCDMKNSYAAWBR')):
Gives:
TypeError: maketrans arguments must be bytes objects
Bye,
bearophile
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Re: pseudo terminal usage from Python?
Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Nope. -u unbuffers stdout and stderr, not stdin. It really must be mpstat being uncooperative. Grant That's not what my python man page says: Grant-u Force stdin, stdout and stderr to be totally Grant unbuffered. On systems where it matters, also put Grant stdin, stdout and stderr in binary mode. Grant That's for 2.5.2, but that's how I remember previous versions Grant working as well. I'm still running 2.4.5 at work. It's -u help: -u : unbuffered binary stdout and stderr (also PYTHONUNBUFFERED=x) see man page for details on internal buffering relating to '-u' Was stdin unbuffering maybe added in 2.5? Skip -- http://mail.python.org/mailman/listinfo/python-list
[ANN] Python 2.5.4 (final)
On behalf of the Python development team and the Python community, I'm happy to announce the release of Python 2.5.4 (final). Python 2.5.3 unfortunately contained an incorrect patch that could cause interpreter crashes; the only change in Python 2.5.4 relative to 2.5.4 is the reversal of this patch. 2.5.4 is the last bug fix release of Python 2.5. Future 2.5.x releases will only include security fixes. According to the release notes, about 80 bugs and patches have been addressed since Python 2.5.2, many of them improving the stability of the interpreter, and improving its portability. See the release notes at the website (also available as Misc/NEWS in the source distribution) for details of bugs fixed; most of them prevent interpreter crashes (and now cause proper Python exceptions in cases where the interpreter may have crashed before). For more information on Python 2.5.4, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.5.4 Highlights of the previous major Python releases are available from the Python 2.5 page, at http://www.python.org/2.5/highlights.html Enjoy this release, Martin Martin v. Loewis mar...@v.loewis.de Python Release Manager (on behalf of the entire python-dev team) -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL - font kerning
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote: Hey all, anybody know, if there´s a way to specify the kerning of a font, when you draw text with PIL? I´d like to achieve the same effect that you get, when you set a negative kerning in Gimp/Photshop - ie. reduce the spacing between glyphs. Can PIL do that or do I use another lib for that? Thx for any pointers some nice xmas days to U all! carsten No. PIL can't do that. I suggest combination of cairo/pango/pangocairo (pycairo and pygtk packages). Ivan -- http://mail.python.org/mailman/listinfo/python-list
Re: Are python objects thread-safe?
On Dec 23, 7:30 am, Duncan Booth duncan.bo...@invalid.invalid wrote:
Aaron Brady castiro...@gmail.com wrote:
Th.1 Th.2
a=X
a=Y
a=Z
You are saying that if 'a=Z' interrupts 'a=Y' at the wrong time, the
destructor for 'X' or 'Y' might not get called. Correct? In serial
flow, the destructor for X is called, then Y.
No, the destructors will be called, but the destructors can do pretty much
anything they want so you can't say the assignment is atomic. This isn't
actually a threading issue: you don't need multiple threads to experience
werid issues here. If you do strange things in a destructor then you can
come up with confusing code even with a single thread.
I see. What about
del a
a= Z
Then, can we say 'a=Z' is atomic? At least, it eliminates the
destructor issue you raise.
Other nasty things can happen if you use dictionaries from multiple
threads. You cannot add or remove a dictionary key while iterating over
a dictionary. This isn't normally a big issue, but as soon as you try to
share the dictionary between threads you'll have to be careful never to
iterate through it.
These aren't documented, IIRC. Did you just discover them by trial
and error?
It is documented, but I can't remember where for Python 2.x. For Python 3,
PEP 3106 says: As in Python 2.x, mutating a dict while iterating over it
using an iterator has an undefined effect and will in most cases raise a
RuntimeError exception. (This is similar to the guarantees made by the Java
Collections Framework.)
I infer that d.items() holds the GIL during the entire operation, and
it's safe to put in a thread. It is merely using an iterator that is
unsafe. (Python 3.0 removed d.items(), leaving only the iterator, I
understand.)
I'm looking at the code, and I don't see where the size is safely
checked. That is, can't I sneak in an add and a remove during
iteration, so long as it doesn't catch me?
I'm looking at 'dict_traverse':
while (PyDict_Next(op, i, pk, pv)) {
Py_VISIT(pk);
Py_VISIT(pv);
}
No locks are acquired here, though I might have missed acquiring the
GIL somewhere else.
In the OP's example, he wasn't changing the size of the dict.
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Re: PIL - font kerning
On Dec 23, 11:22 pm, Ivan Illarionov ivan.illario...@gmail.com
wrote:
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote:
Hey all,
anybody know, if there´s a way to specify the kerning of a font, when
you draw text with PIL?
I´d like to achieve the same effect that you get, when you set a
negative kerning in Gimp/Photshop - ie. reduce the spacing between
glyphs.
Can PIL do that or do I use another lib for that?
Thx for any pointers some nice xmas days to U all!
carsten
No. PIL can't do that. I suggest combination of cairo/pango/pangocairo
(pycairo and pygtk packages).
Ivan
I found a little helper function that does what you want (and more)
import cairo
import pango
import pangocairo
def draw_text(surface, context, text, font=sans 14, position=None,
color=None,
box_width=None,
alignment=pango.ALIGN_CENTER,
line_spacing=None, letter_spacing=None,
extra_kerning=None):
if color is None:
color = (0.0, 0.0, 0.0)
context.set_source_rgb(*color)
pc = pangocairo.CairoContext(context)
layout = pc.create_layout()
layout.set_text(text)
layout.set_font_description(pango.FontDescription(font))
if box_width: layout.set_width(box_width)
layout.set_alignment(alignment)
if line_spacing: layout.set_spacing(spacing)
alist = pango.AttrList()
if letter_spacing:
alist.insert(pango.AttrLetterSpacing(letter_spacing, 0, len
(text)))
if extra_kerning:
for pos, kern in extra_kerning.iteritems():
alist.insert(pango.AttrLetterSpacing(kern, pos, pos
+1))
layout.set_attributes(alist)
if position is None:
width, height = surface.get_width(), surface.get_height()
w, h = layout.get_pixel_size()
position = (width/2.0 - w/2.0, height/2.0 - h/2.0)
context.move_to(*position)
pc.show_layout(layout)
And example usage:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
context = cairo.Context(surface)
draw_text(surface, context, 'Hello world!',
font=sans 52, color=(.25,.28,.33),
letter_spacing=-6000,
extra_kerning={0:-9000, 1:-1000, 6:6000, 7:-15000, 8:5000,
9:-7000})
surface.write_to_png(hello.png)
--
Ivan
--
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Re: pseudo terminal usage from Python?
On 2008-12-23, s...@pobox.com s...@pobox.com wrote: Grant Are you sure it's not Python buffering its input? Have you tried Grant python -u mympstat.py? Nope. -u unbuffers stdout and stderr, not stdin. It really must be mpstat being uncooperative. Grant That's not what my python man page says: Grant-u Force stdin, stdout and stderr to be totally Grant unbuffered. On systems where it matters, also put Grant stdin, stdout and stderr in binary mode. Grant That's for 2.5.2, but that's how I remember previous versions Grant working as well. I'm still running 2.4.5 at work. It's -u help: -u : unbuffered binary stdout and stderr (also PYTHONUNBUFFERED=x) see man page for details on internal buffering relating to '-u' Was stdin unbuffering maybe added in 2.5? Let's do some experiments... $ cat echo.py import sys while 1: line = sys.stdin.readline() sys.stdout.write(line) $ (while sleep 1; do date; done) | python2.4 echo.py [I see a line printed once per second.] $ (while sleep 1; do date; done) | python2.5 echo.py [same as 2.4] Is python stdin is line-buffered by default? We'll do a version that doesn't have newlines in the input stream... $ cat echo2.py import sys while 1: sys.stdout.write(sys.stdin.read(1)) $ (while sleep 1; do echo -n $(date); done) | python2.4 echo2.py [wait 10-20 seconds -- no output. When I hit ctrl-C, I see a all the output.] $ (while sleep 1; do echo -n $(date); done) | python2.5 echo2.py [same as 2.4] It appears the by default both 2.4 and 2.5 have line-buffered stdin. Let's try -u... $ (while sleep 1; do echo -n $(date); done) | python2.4 -u echo2.py [I see output once per second.] $ (while sleep 1; do echo -n $(date); done) | python2.5 -u echo2.py [same as 2.4] Under Linux, the '-u' option unbuffers stdin in both 2.4 and 2.5. It just isn't mentioned in the help output or the man page for 2.4. -- Grant Edwards grante Yow! Will the third world at war keep Bosom Buddies visi.comoff the air? -- http://mail.python.org/mailman/listinfo/python-list
Re: Get applications to open a given file (Mac and, or Windows)
On Dec 23, 2008, at 5:29 PM, riklau...@gmail.com wrote: Under Linux/Unix I use GIO (pygobject) or gnome-vfs-python to get a list of installed applications that can open given file (for example image in graphics software). Is there something that can be used for MS Windows or Mac OS X? -- http://mail.python.org/mailman/listinfo/python-list On mac, there are the modules Carbon.Launch and Carbon.LaunchServices Maybe you'll find useful items in the PyObjC framework as well - This sig is dedicated to the advancement of Nuclear Power Tommy Nordgren tommy.nordg...@comhem.se -- http://mail.python.org/mailman/listinfo/python-list
Re: Beep
On Dec 22, 3:16 am, Jeffrey Barish jeff_bar...@earthlink.net wrote:
I use sys.stdout.write('\a') to beep. It works fine on Kubuntu, but not on
two other platforms (one of which is Ubuntu). I presume that the problem
is due to a system configuration issue. Can someone point me in the right
direction? Thanks.
--
Jeffrey Barish
gnome-terminal (default terminal on Ubuntu) uses X11 bell for its
beep.
Try 'xset b on' to turn the beep on. See 'man xset' for more options.
Ivan
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Re: [Haskell-cafe] Initializing GHC from Python
I upmodded this on Reddit. Thank you for your work. -- Jason Dusek -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
On Tue, 23 Dec 2008 15:39:52 -, Aaron Stepp stepp.aa...@gmail.com wrote: import random from rtcmix import * from chimes_source import * # Chime.play() from rhythmblock import * # rhythmBlock.rhythmTwist() and rhythmBlock.printStuff() from pitchblock import * # pitchBlock.pitchTwist() and pitchBlock.printStuff() from lenEval import * #greaterThan.sovler() indexrand = random.Random() indexrand.seed(2) chime = Chime() notes = pitchBlock() rhythm = rhythmBlock() solve = greaterThan() class arrayBlock: def __init__(self, theTempo, start): self.__A = [] self.__B = [] self.__start = start self.__tempo = theTempo def player(self, length, tempo, octave, pan, seed): tempo = (120, self.__tempo) for a in range(length): one = indexrand.randint(0, 3) two = indexrand.randint(0, 7) self.__A = self.__A + notes.pitchTwist(one , two) for b in range(length): one = indexrand.randint(0, 3) two = indexrand.randint(0, 7) self.__B = self.__B + rhythm.rhythmTwist(one , two) lenA = len(self.__A) lenB = len(self.__B) var = solve.solver(lenA, lenB) for c in range(var): print self.__A[c] self.__start = self.__start + tb(self.__B[var]) chime.play(self.__start, self.__A[var], octave, pan, seed) This almost does exactly what I want, and is far cleaner than my previous attempts. The only problem is that now all my arguments are being passed as zeros! Which all your arguments? There are an awful lot there; what *exactly* do you mean? I assume this has to do with WHEN I'm referencing self.__A and self.__B? If you mean __A and __B are full of zeroes, then you should suspect your notes.pitchTwist() and rhythm.rhythmTwist() methods of returning zeroes. -- Rhodri James *-* Wildebeeste Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: python3 urlopen(...).read() returns bytes
On Dec 23, 12:51 pm, Christian Heimes li...@cheimes.de wrote: If you want to do it right ... It should be a clean patch against the py3k svn branch including documentation and a unit test. Got all three at http://bugs.python.org/issue4733 . Probably got all three wrong too, so any feedback is very welcome :) I think a neat improvement, besides better docs, names, code, etc., would be to implement Carl Bank's idea of checking Content-Encoding. Oh, and there's a 'print(Using default charset '%s' % response.charset)' in there that seemed educational when I wrote it, but now sounds lame :) Glenn, can you test the patch[1] there? Thanks for the encouragement, Chris! I hope we don't regret it :D Daniel [1]http://bugs.python.org/file12437/urlopen_text.diff -- http://mail.python.org/mailman/listinfo/python-list
Re: [ANN] Python 2.5.4 (final)
Martin v. Löwis wrote: For more information on Python 2.5.4, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.5.4 http://www.python.org/download/releases/2.5.4/ -- http://mail.python.org/mailman/listinfo/python-list
Re: 2to3 used in the Shootout
bearophileh...@lycos.com wrote:
They have translated the Python benchmarks of the Shootout site from
Py2 to Py3 using 2to3:
http://shootout.alioth.debian.org/u32/benchmark.php?test=alllang=python3
It shows some performance bugs of Python3 itself (especially
regarding the binary-trees benchmark, that was unexpected by me), and
two points where 2to3 may be improved, for example after the
translation this gives error:
table=string.maketrans('ACBDGHK\nMNSRUTWVYacbdghkmnsrutwvy',
'TGVHCDM
\nKNSYAAWBRTGVHCDMKNSYAAWBR')):
Gives:
TypeError: maketrans arguments must be bytes objects
Perhaps you could file a tracker item.
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Re: SuSE11.1 eclipse 64 pydev can't add python path
Hi, Reimar Bauer wrote: I can install pydev using the update manager in eclipse for 64 bit from the SuSE 11.1 repo. But I can't configure pydev without crashing it. I can select the interpreter /usr/bin/python and I do see the System PYTHONPATH Forced builtin libs also looks good. But Apply gives me # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x7f2d7abebaed, pid=6544, tid=139832007596368 # # Java VM: IcedTea 64-Bit Server VM (1.7.0-b24 mixed mode linux-amd64) # Problematic frame: # V [libjvm.so+0x21baed] # # An error report file with more information is saved as: # /home/user/hs_err_pid6544.log # # If you would like to submit a bug report, please visit: # http://icedtea.classpath.org/bugzilla # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. unfortunately I can't help but reproduce the problem. My eclipse was already configured when I updated openSuSE 11.0 to 11.1 so it is not *that* bad for me (only when I install new eggs and want pydev to take notice of them). The question is who is responsible for this... java? pydev? (suse?) If you open a ticket in a bugtracker, please post the url here and I will add myself, too Best regards, Nikolas Tautenhahn -- http://mail.python.org/mailman/listinfo/python-list
Re: 2to3 used in the Shootout
On Dec 23, 11:51 am, bearophileh...@lycos.com wrote:
They have translated the Python benchmarks of the Shootout site from
Py2 to Py3 using 2to3:
http://shootout.alioth.debian.org/u32/benchmark.php?test=all〈=pyt...
So please re-write those programs to remove problems created by
automatic translation and better take advantage of Python 3
functionality...
http://shootout.alioth.debian.org/u32/faq.php#play
It shows some performance bugs of Python3 itself (especially
regarding the binary-trees benchmark, that was unexpected by me), and
two points where 2to3 may be improved, for example after the
translation this gives error:
table=string.maketrans('ACBDGHK\nMNSRUTWVYacbdghkmnsrutwvy',
'TGVHCDM
\nKNSYAAWBRTGVHCDMKNSYAAWBR')):
Gives:
TypeError: maketrans arguments must be bytes objects
Bye,
bearophile
--
http://mail.python.org/mailman/listinfo/python-list
Re: no sign() function ?
On Dec 23, 2:45 pm, Mark Dickinson dicki...@gmail.com wrote: On Dec 23, 4:27 pm, ajaksu aja...@gmail.com wrote: Is x ** 0 0. instead of atan2(x, -1.) 0. unreliable across platforms? x**0 doesn't distinguish between x = -0.0 and x = 0.0. I suspect you're confusing -0.0**0.0 with (-0.0)**0.0. Yes, fooled me :) Thanks for the heads-up! Daniel -- http://mail.python.org/mailman/listinfo/python-list
Re: SuSE11.1 eclipse 64 pydev can't add python path
On Tue, Dec 23, 2008 at 5:08 PM, Nikolas Tautenhahn virt...@gmx.de wrote: Hi, Reimar Bauer wrote: I can install pydev using the update manager in eclipse for 64 bit from the SuSE 11.1 repo. But I can't configure pydev without crashing it. I can select the interpreter /usr/bin/python and I do see the System PYTHONPATH Forced builtin libs also looks good. But Apply gives me # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x7f2d7abebaed, pid=6544, tid=139832007596368 # # Java VM: IcedTea 64-Bit Server VM (1.7.0-b24 mixed mode linux-amd64) # Problematic frame: # V [libjvm.so+0x21baed] # # An error report file with more information is saved as: # /home/user/hs_err_pid6544.log # # If you would like to submit a bug report, please visit: # http://icedtea.classpath.org/bugzilla # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. unfortunately I can't help but reproduce the problem. My eclipse was already configured when I updated openSuSE 11.0 to 11.1 so it is not *that* bad for me (only when I install new eggs and want pydev to take notice of them). The question is who is responsible for this... java? pydev? (suse?) If it was a PyDev problem, you'd see either a Python or a Java error message. This is a known bug in the HotSpot VM on Linux 64. It affects both the Sun and OpenJDK versions of Java. It was fixed in the newer builds. If you open a ticket in a bugtracker, please post the url here and I will add myself, too Best regards, Nikolas Tautenhahn -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
