Wing IDE 4.1.12 released
Hi, Wingware has released version 4.1.12 of Wing IDE, our integrated development environment designed specifically for the Python programming language. Wing IDE provides a professional quality code editor with vi, emacs, and other key bindings, auto-completion, call tips, refactoring, context-aware auto-editing, a powerful graphical debugger, version control, unit testing, search, and many other features. For details see http://wingware.com/ This minor release includes: * Support for Python 2.6 and 2.7 running on cygwin * List SHA1 hashes on the downloads page * Show perspectives key bindings in Load Perspective sub-menu * Fix several color-related regressions * Fix extract refactoring when toplevel source is indented * Return focus to editor after refactoring operations * 6 other bug fixes and minor improvements For a complete change log see http://wingware.com/pub/wingide/4.1.12/CHANGELOG.txt Free trial: http://wingware.com/wingide/trial Downloads: http://wingware.com/downloads Feature matrix: http://wingware.com/wingide/features More information: http://wingware.com/ Sales: http://wingware.com/store/purchase Upgrades: https://wingware.com/store/upgrade Questions? Don't hesitate to email us at sa...@wingware.com. Thanks, -- Stephan Deibel Wingware | Python IDE Advancing Software Development www.wingware.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: An error when i switched from python v2.6.6 = v3.2.3
Τη Σάββατο, 9 Μαρτίου 2013 7:05:08 π.μ. UTC+2, ο χρήστης Steven D'Aprano έγραψε: On Fri, 08 Mar 2013 19:18:50 -0800, Νίκος Γκρ33κ wrote: I agree with you but i wonder why the world would want to dedicate hours for fiddling with my script? Why anyone should mess with my website http://superhost.gr ? What makes you think it would be hours? For somebody who knows what they are doing, it is probably more like minutes. And as for why... - because they think it's funny; - because they get pleasure from vandalising other people's property; - to prove that they can do it; - to punish you for being naive and foolish; - to get control of your webserver, so they can store files on it without your knowledge; - or launch attacks on other people's websites; - or to encrypt your data and charge you money to decrypt it; - or some other reason that I cannot think of. -- Steven I see, didn think of those reason apart form the fact that they cna prove they can do it! But as i have it now more security improved they can't :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On Fri, 08 Mar 2013 22:06:28 -0500, Kene Meniru wrote: Program summary: I have a module called user.py that imports another module called app.py. Functions in app.py are used in user.py to describe 3D objects. These objects are saved in another object described in doc.py. What do you mean, objects are saved in another object? app.py contains a function called view(). When called in user.py, it signals the end of object descriptions. Presently all objects contained in doc.py are exported to either POV-Ray or OpenSCAD file format depending on the argument given to view(). My Issues: I have decided I want to provide a preview of the objects using opengl (pyglet). So I am trying to create another module called appwin.py which the user can launch with user.py as an argument. What happens if the user launches appwin with a different argument? If appwin can only take one, compulsory, argument, then it's silly to require it as an argument. Just have appwin automatically import user.py, and do whatever it needs. When each object is described in user.py, I want the user to be able to switch to appwin.py, provide a signal that makes appwin.py redraw the screen to show any modifications (perhaps with the enter key). This makes no sense to me. Are you saying that appwin opens a text editor that allows the user to edit the user.py source code? I do not want to invest much time with appwin.py now as I am still coding app.py. Right now, appwin.py just subclasses pyglet.window.Window(). I do not want to merge app.py and appwin.py. I want them to be two separate applications because I want to retain the option of either console or many different window interfaces. Making them a single module still retains the option of console or many different window interfaces. The problem then is: How can I run appwin.py which will then execute user.py to create the objects to be saved in doc.py. I don't know. How does user.py create the objects? Suppose it users a function called create. Then you would do this in appwin: import user user.create() Then when view() is encountered to be able to access the objects stored in doc.py in appwin.py? What do you mean by view() is encounted? How would you access the objects stored in doc.py? Suppose you access them using a list called list_of_objects. Then in appwin.py: import doc for obj in doc.list_of_objects: do_something_with(obj) where you have to write the function do_something_with, to do whatever it is you want to do. By the way, calling a module doc which is not for *documentation* is a bad idea. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
RE: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
If the memory usage is continually growing, you have something else that is a problem -- something is holding onto objects. Even if Python is not returning memory to the OS, it should be reusing the memory it has if objects are being freed. -- [] Yes I have verified my python application is reusing the memory (just that it doesn't reduce once it has grown) and my python process doesn't have any issue to run even though it is seen taking up more than 2G in footprint. My problem is capacity planning on the server whereby since my python process doesn't release memory back to the OS, the OS wasn't able to allocate memory when a new process is spawn off. -- http://mail.python.org/mailman/listinfo/python-list
Re: Apparent magic number problem
Colin J. Williams wrote: The program runs correctly under each version, but it runs more slowly under 3.2. This is probably due to the fact that the .pyc file is created for the Python 2.7 execution. When Python 3.2 is run it fails to create a new .pyc file and if the 2.7 .pyc is offered directly a magic number problem is reported. (1) .pyc files are only created if a module is imported (2) The 2.7 .pyc file is put alongside the .py file whereas the 3.2 .pyc is put into the __pycache__ subfolder. No clash can occur. A simple example: $ ls mod.py $ cat mod.py print(hello world) Run it; no pyc is created: $ python2.7 mod.py hello world $ ls mod.py Import it using 2.7: $ python2.7 -c 'import mod' hello world $ ls mod.py mod.pyc Import it using 3.2: $ python3.2 -c 'import mod' hello world $ ls mod.py mod.pyc __pycache__ $ ls __pycache__/ mod.cpython-32.pyc Run the compiled code: $ python2.7 mod.pyc hello world $ python3.2 __pycache__/mod.cpython-32.pyc hello world But I'm with Steven, it's unlikely that the module compilation phase is responsible for a noticeable slowdown. -- http://mail.python.org/mailman/listinfo/python-list
Trelby (was: Any other screenwriters?)
On 2013-03-08 13:07, Rick Dooling wrote: However, most of these programs are apps with closed GUIs, and of course I'm looking for a way to do the same thing with Python and call it from the command-line or from within Vim You should consider taking a look at Trelby. It is free software (GPL2) and written in Python. While it is a GUI program, you can import (txt, fdx, celtx, astx, fountain, fadein) and export (pdf, rtf, fdx, html, foutain, txt), so using vi for editing should just work. I have no practical experience with the program, however. If you try it, you should probably take a snapshot from github, not the latest release 2.2, because it seems, they fixed some installation issues. While I have no experience in screenwriting yet, the program seems to run fine for me on Debian Linux. Find Trelby here: http://www.trelby.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
On 03/09/2013 03:07 AM, Wong Wah Meng-R32813 wrote: Yes I have verified my python application is reusing the memory (just that it doesn't reduce once it has grown) and my python process doesn't have any issue to run even though it is seen taking up more than 2G in footprint. My problem is capacity planning on the server whereby since my python process doesn't release memory back to the OS, the OS wasn't able to allocate memory when a new process is spawn off So is the server running out of disk space? If not, why not increase the swapfile(s) size? That's what's being held onto, not RAM. If you are short on disk space, and therefore cannot afford to increase the swapfile size, then you may want to plan the Python program's execution around that constraint. Discounting the play-program that started this thread, is it possible that your actual app unnecessarily uses lots of space during one phase of execution, and therefore is saddled with that space at other times? For example, are you using a large list to hold a data file when an iterator would do just as well? If that phase of execution cannot be eliminated, but it's a fleeting time, perhaps that part of the execution can be launched from the main app as a separate process. When the process ends, the memory is freed. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
Steven D'Aprano wrote: What do you mean, objects are saved in another object? doc.py has a dictionary. When the user describes a wall, it is passed to the doc object to be saved in the dictionary. What happens if the user launches appwin with a different argument? If appwin can only take one, compulsory, argument, then it's silly to require it as an argument. Just have appwin automatically import user.py, and do whatever it needs. I guess my description does not come across well. I thought user.py sounded like it is, a user created file. It will be named differently for each user to created different types of 3D objects. It does not make sense to expect every user to name their design file the same. So there will have to be a differently named single argument for buildeswin. This makes no sense to me. Are you saying that appwin opens a text editor that allows the user to edit the user.py source code? No. appwin opens an opengl (pyglet.window.Window()) graphics window as I mentioned. I don't know. How does user.py create the objects? Suppose it users a function called create. Then you would do this in appwin: import user user.create() I have tried importing user.py and/or app.py. However there is no single command to call. My program is designed to assist in the building design process. It is a big program and the creation of building components takes quite a few steps. I do not want to support these steps in a graphics window which is why the user uses any text editor they prefer to create user.py. I want appwin.py (which has a graphics window) to be able to access objects stored in doc.py (which has a dictionary) after a command like python user.py so that the objects saved in doc.py after execution can be retrieved and drawn in appwin.py. What do you mean by view() is encounted? This is a command that the user can enter in user.py. app.py will then encounter this command as python parses the file. How would you access the objects stored in doc.py? Suppose you access them using a list called list_of_objects. Then in appwin.py: import doc for obj in doc.list_of_objects: do_something_with(obj) I have tried this but there are no objects found in the dictionary in doc.py. I am guessing that I have to execute appwin.py so that it shares the same namespace with user.py or maybe a way to access that namespace. This is the reason for my question. where you have to write the function do_something_with, to do whatever it is you want to do. -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On Sat, Mar 9, 2013 at 10:05 PM, Kene Meniru kene.men...@illom.org wrote: I have tried importing user.py and/or app.py. However there is no single command to call. I haven't followed the thread in detail, but I gather you're trying to import a file with a variable name? Instead of 'import user', try: user = __import__(foobar) You can then replace the quoted string with whatever you need (note, leave off the .py extension). In your code, it'll be as if you did: import foobar as user but with the flexibility of using whatever run-time-chosen name you need. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On 03/09/2013 06:05 AM, Kene Meniru wrote: (lots of stuff that was more confusing to me than helpful) You use the words launch, encountered, execute, and others in ways that do not make sense to me, or are at least ambiguous. You have an explicitly named user.py, which apparently is *not* generally named that. I could give you lots of random facts and suggestions, and one of the might hit home. For example the __import__() function can import a module that you don't know the name of ahead of time. It's not often the right answer, though, so I hesitate to suggest it. For another example, if you import a module by two different names, or if you import the module that is your starting script, then you can end up with two instances of such a module, with all sorts of negative implications about global data or class attributes stored in that module, or even more subtle problems. For a final example, having a circular import tree can cause problems if any of those imports have any global code (like class initialization, defining constants, etc.). It's generally much better to define a strict hierarchy of who imports whom. But I think instead that it'd be better for you to make a clearer statement about how your code is structured. I'm guessing that all of this is intended to be in one executable -- no child processes, etc. So don't say launch, say import, or function-call, or whatever you are really doing. I'm guessing that you're running this on Python 3.3 under Linux. I'm guessing that user.py is one possible name that a particular user calls his script. And that script is what he runs on the Python commandline. python user.py And that script calls functions in app.py, doc.py, and/or appwin.py. And that currently, you're trying to import user.py from one of your own modules, for purposes of either callback functions or global data access. That's a mistake. When you import your *script* (using __import__() as suggested above) you get a new copy of the script, and new copies of all its global data. I can't even guess how you're intending to mix the commandline stuff of app.py with gui stuff in one or more appwin.py variants. You'll have to be explicit, if it even matters yet. I suggest that rather than responding to these points, you restate your problem, in one place, with coherent detail that eliminates these guesses and replaces them with reality. Start with the environment this is running in, and the commandline typically used to launch the code, and the interdepencies of the various modules. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: An error when i switched from python v2.6.6 = v3.2.3
On 09/03/2013 07:56, Νίκος Γκρ33κ wrote: Τη Σάββατο, 9 Μαρτίου 2013 7:05:08 π.μ. UTC+2, ο χρήστης Steven D'Aprano έγραψε: On Fri, 08 Mar 2013 19:18:50 -0800, Νίκος Γκρ33κ wrote: I agree with you but i wonder why the world would want to dedicate hours for fiddling with my script? Why anyone should mess with my website http://superhost.gr ? What makes you think it would be hours? For somebody who knows what they are doing, it is probably more like minutes. And as for why... - because they think it's funny; - because they get pleasure from vandalising other people's property; - to prove that they can do it; - to punish you for being naive and foolish; - to get control of your webserver, so they can store files on it without your knowledge; - or launch attacks on other people's websites; - or to encrypt your data and charge you money to decrypt it; - or some other reason that I cannot think of. -- Steven I see, didn think of those reason apart form the fact that they cna prove they can do it! But as i have it now more security improved they can't :-) Red flag to a bull. Would you also please read section 2 of this http://wiki.python.org/moin/GoogleGroupsPython to prevent all of your posts having quotean excessive number of quoted blank lines./quote -- Cheers. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: An error when i switched from python v2.6.6 = v3.2.3
Is there a way to see anserws to my posts via ThunderBird that doesn't hve this formatting issue? -- http://mail.python.org/mailman/listinfo/python-list
Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
In general, it is hard for any process to return the memory the OS allocate to it back to the OS, short of exiting the whole process. The only case that this works reliably is when the process allocates a chunk of memory by mmap (which is chosen by libc if it malloc or calloc a large chunk of memory), and that whole chunk is not needed any more. In that case the process can munmap it. Evidently you are not see that in your program. What you allocate might be too small (so libc choose to allocate it using another system call sbrk), or that the allocated memory also hold other objects not freed. If you want to reduce the footprint of a long running program that periodically allocates a large chunk of memory, the easiest solution is to fork a different process to achieve the computations that needs the memory. That way, you can exit the process after you complete the computation, and at that point all memory allocated to it is guaranteed to be freed to the OS. Modules like multiprocessing probably make the idea sufficiently easy to implement. On Sat, Mar 9, 2013 at 4:07 PM, Wong Wah Meng-R32813 r32...@freescale.comwrote: If the memory usage is continually growing, you have something else that is a problem -- something is holding onto objects. Even if Python is not returning memory to the OS, it should be reusing the memory it has if objects are being freed. -- [] Yes I have verified my python application is reusing the memory (just that it doesn't reduce once it has grown) and my python process doesn't have any issue to run even though it is seen taking up more than 2G in footprint. My problem is capacity planning on the server whereby since my python process doesn't release memory back to the OS, the OS wasn't able to allocate memory when a new process is spawn off. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Apparent magic number problem
On 09/03/2013 3:51 AM, Peter Otten wrote:
Colin J. Williams wrote:
The program runs correctly under each version, but it runs more slowly
under 3.2.
This is probably due to the fact that the .pyc file is created for the
Python 2.7 execution.
When Python 3.2 is run it fails to create a new .pyc file and if the 2.7
.pyc is offered directly a magic number problem is reported.
(1) .pyc files are only created if a module is imported
(2) The 2.7 .pyc file is put alongside the .py file whereas the 3.2 .pyc is
put into the __pycache__ subfolder. No clash can occur.
A simple example:
$ ls
mod.py
$ cat mod.py
print(hello world)
Run it; no pyc is created:
$ python2.7 mod.py
hello world
$ ls
mod.py
Import it using 2.7:
$ python2.7 -c 'import mod'
hello world
$ ls
mod.py mod.pyc
Import it using 3.2:
$ python3.2 -c 'import mod'
hello world
$ ls
mod.py mod.pyc __pycache__
$ ls __pycache__/
mod.cpython-32.pyc
Run the compiled code:
$ python2.7 mod.pyc
hello world
$ python3.2 __pycache__/mod.cpython-32.pyc
hello world
But I'm with Steven, it's unlikely that the module compilation phase is
responsible for a noticeable slowdown.
Thanks to Steven and Peter for their responses.
My main problem appears to be with:
Profile with Python 2.7
11 25.7362.340 25.7362.340
{numpy.linalg.lapack_lite.dgesv}
Profile with Python 3.2
11 152.111 13.828 152.111 13.828 {built-in method dgesv}
In other words, the Python 3.2 linear equation solve takes longer than
with Python 2.7. I'll pursue this with the numpy folk.
There also appears to be a problem with the generation of the .pyc.
Please see the example below:
rem temp.bat
dir *.pyc
del *.pyc
C:\python32\python.exe profiler.py Intel P4 2.8GHz 2MB Ram 221 GB Free
Disk cjw prof3.txt
dir *.pyc
This is executed with: tmp.bat tmp.lst
profiler.py contains:
#---
# Name:profiler.py
# Purpose:
#
# Author: cjw
#
# Created: 17/02/2013
# Copyright: (c) cjw 2013
# Licence: your licence
#---
import cProfile as p, pstats as s, sys
def main():
v= sys.version
statsFile= 'FPSStats' + v[0] + v[2] + '.txt'
p.run('import testFPSpeed; testFPSpeed.main()',
statsFile)
t= s.Stats(statsFile)
t.strip_dirs().sort_stats('cumulative').print_stats(40)
pass
if __name__ == '__main__':
main()
tmp.lst contains:
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspirem temp.bat
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidel *.pyc
C:\Documents and Settings\cjw.P4A\My
Documents\devpy\raspiC:\python32\python.exe profiler.py Intel P4 2.8GHz
2MB Ram 221 GB Free Disk cjw 1prof3.txt
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspirem temp.bat
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidel *.pyc
C:\Documents and Settings\cjw.P4A\My
Documents\devpy\raspiC:\python32\python.exe profiler.py Intel P4 2.8GHz
2MB Ram 221 GB Free Disk cjw 1prof3.txt
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
tmp.lst contains:
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspirem temp.bat
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidel *.pyc
C:\Documents and Settings\cjw.P4A\My
Documents\devpy\raspiC:\python32\python.exe profiler.py Intel P4 2.8GHz
2MB Ram 221 GB Free Disk cjw 1prof3.txt
C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspidir *.pyc
Volume in drive C has no label.
Volume Serial Number is D001-FAC4
Directory of C:\Documents and Settings\cjw.P4A\My Documents\devpy\raspi
From this we see that no .pys was reported for testFPSpeed.py.
However, looking at the directory itself. the .pyc is in fact created.
Thus, the .pyc is, if necessary, generated upon the import of a .py and
so this does not explain the time difference between 2.7 and 3.2.
Re: An error when i switched from python v2.6.6 = v3.2.3
On Mar 9, 7:16 pm, Νίκος Γκρ33κ nikos.gr...@gmail.com wrote: Is there a way to see anserws to my posts via ThunderBird that doesn't hve this formatting issue? I had posted a suggestion to get back to 'old google groups' here. Usually if you (can) switch to the old these problems vanish http://mail.python.org/pipermail/python-list/2012-October/633460.html [According to Alex it seems you may have to actively select the new before you can select the old] -- http://mail.python.org/mailman/listinfo/python-list
http://stackoverflow.com/questions/15311450/my-chat-client-freezes-up-after-beginning-threads
I made a better chat client following help from people: They told me that if I didn't want to be blocked on .recv when waiting for messages, I would need to use threads, classes, functions, and queues to do so. So I followed some help a specific person gave me where I created a thread from a class and then defined a function that was supposed to read incoming messages and print them. I also created a function that allows you to enter stuff to be sent off. Thing is, when I run the program. Nothing happens. Can somebody help point out what is wrong? (I've asked questions and researched for 3 days, without getting anywhere, so I did try) from socket import * import threading import json import select print(Client Version 3) HOST = input(Connect to: ) PORT = int(input(On port: )) # Create Socket s = socket(AF_INET,SOCK_STREAM) s.connect((HOST,PORT)) print(Connected to: ,HOST,) #---Need 2 threads for handling incoming and outgoing messages-- # 1: Create out_buffer: Buffer = [] rlist,wlist,xlist = select.select([s],Buffer,[]) class Incoming(threading.Thread): # made a function a thread def Incoming_messages(): while True: for i in rlist: data = i.recv(1024) if data: print(data.decode()) # Now for outgoing data. def Outgoing(): while True: user_input=(Your message: ) if user_input is True: Buffer += [user_input.encode()] for i in wlist: s.sendall(Buffer) Buffer = [] Thanks for taking a look, thanks also to Tony The Lion for suggesting this If the code isnt done right, here's a link to view it, and download: View: http://i1267.photobucket.com/albums/jj554/owatch/PPP_zps4beb891b.png Download: http://www.mediafire.com/?u51a9b5axfffoxl -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
OK. Sorry to have caused all the confusion. Let me try this again. To use my program the user needs a script file I will call user.py. Functions from my program must be imported into this file with something like from myapp import *. myapp.py is a module in my program that has all the functions that the user needs to describe building components. There is also a main controller object that is imported into myapp.py module called app. When python parses user.py module, the functions the user has provided creates building components which are then saved in a dictionary located in an object called doc that is part of my program. The user is free to use the functions in myapp.py to describe building components. When this process is complete or when the user wants to view their work-in-progress, they have to place a function called view() on the last line in user.py. This function currently exports the components into POV-Ray or OpenSCAD format. These are CAD programs that read script files to render or create images of the described artifacts. So this means that to view their work the user needs to run python on user.py to export the building and then run POV-Ray or OpenSCAD on the exported file to see the building. I want to make it possible for the user to preview the building components without having to use the external rendering programs. I can currently have the app object provide this preview but it means that the user will have to process user.py with python then exit the graphic window each time they need to see changes. So the solution I am looking for is to have a graphic window open that watches user.py for changes. If there is a change the graphic window updates the rendition of the created components without further intervention by the user. However this means that the graphic must somehow run python to parse user.py and then be able to access the objects stored in doc so that the coordinates can be used to update the view. This is where I am having difficulty. I hope this is clearer. -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
read and write the same text file
read and write the same text file
Open a text file ,read the content ,then make some change on it ,then write it
back to the file ,now the modified text should only has the modified content
but not the initial content ,so can we implement this by only set the mode
parameter with open() function ?if yes ,what the parameter should be ?if no
,can we implement this by only one with statement ?
I implement this with 2 with statement as the following
replace_pattern = re.compile(r.+?,re.DOTALL)
def text_process(file):
with open(file,'r') as f:
text = f.read()
with open(file,'w') as f:
f.write(replace_pattern.sub('',text))
--
http://mail.python.org/mailman/listinfo/python-list
Re: read and write the same text file
In article c41028f7-e457-4a2b-99f4-c473eaadd...@googlegroups.com,
iMath redstone-c...@163.com wrote:
read and write the same text file
Open a text file ,read the content ,then make some change on it ,then write
it back to the file ,now the modified text should only has the modified
content but not the initial content ,so can we implement this by only set the
mode parameter with open() function ?if yes ,what the parameter should be ?if
no ,can we implement this by only one with statement ?
I implement this with 2 with statement as the following
replace_pattern = re.compile(r.+?,re.DOTALL)
def text_process(file):
with open(file,'r') as f:
text = f.read()
with open(file,'w') as f:
f.write(replace_pattern.sub('',text))
At a minimum, you need to close the file after you read it and before
you re-open it for writing.
There's a variety of ways you could achieve the same effect. You might
open the file once, in read-write mode, read the contents, rewind to the
beginning with seek(), then write the new contents. You might also
write the modified data out to a new file, close it, and then rename it.
But, open, read, close, open, write, close is the most straight-forward.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On 03/09/2013 10:34 AM, Kene Meniru wrote: OK. Sorry to have caused all the confusion. Let me try this again. Thank you very much. This is much clearer, though it's not all here. To use my program the user needs a script file I will call user.py. Functions from my program must be imported into this file with something like from myapp import *. And does the user run this script by doing python user.py myapp.py is a module in my program that has all the functions that the user needs to describe building components. There is also a main controller object that is imported into myapp.py module called app. When python parses user.py module, You presumably mean, When Python runs the script user.py the functions the user has provided creates building components which are then saved in a dictionary located in an object called doc that is part of my program. What program is that? Looks to me like you're writing a series of modules, a framework perhaps, that is invoked by the user script. The user is free to use the functions in myapp.py to describe building components. When this process is complete or when the user wants to view their work-in-progress, they have to place a function called view() on the last line in user.py. Don't you mean the code in user.py has to *call* the function app.view() when they're all done with defining the components? That has nothing to do with being the last line. This function currently exports You mean writes files into the file system? the components into POV-Ray or OpenSCAD format. These are CAD programs that read script files to render or create images of the described artifacts. So this means that to view their work the user needs to run python on user.py to export the building and then run POV-Ray or OpenSCAD on the exported file to see the building. At that point, the user.py script has completed, and Python is done, right? I want to make it possible for the user to preview the building components without having to use the external rendering programs. I can currently have the app object provide this preview but it means that the user will have to process user.py with python then exit the graphic window each time they need to see changes. What changes are those? You can't change a script while it's executing. Could you clarify this so I can rethink the following paragraph? So the solution I am looking for is to have a graphic window open that watches user.py for changes. If there is a change the graphic window updates the rendition of the created components without further intervention by the user. However this means that the graphic must somehow run python to parse user.py and then be able to access the objects stored in doc so that the coordinates can be used to update the view. This is where I am having difficulty. I hope this is clearer. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
RFD: comp.sys.raspberry-pi
REQUEST FOR DISCUSSION (RFD) unmoderated group comp.sys.raspberry-pi This is a formal Request for Discussion (RFD) for the creation of the unmoderated newsgroup comp.sys.raspberry-pi. NEWSGROUPS LINE: comp.sys.raspberry-pi Raspberry Pi computers related hardware and software. RATIONALE: * Discussions on this topic have so far been widely and thinly spread on Usenet - e.g. google site:groups.google.com/group/comp raspberry pi * Device has been on sale for over a year (since 29 Feb 2012) * Circa 1 million units sold so far - http://www.wired.com/design/2013/01/raspberry-pi-million-boards/ * The maker's web forum, while it is a web site and not Usenet, currently reports over 299,000 posts and 33,000 threads giving an indication of the levels of interest in discussion - http://www.raspberrypi.org/phpBB3/ * The Raspberry Pi is complex and used by communities having technical issues to discuss * Various third-party add-ons are available * The device has some distinctive features, e.g., * Low cost - base retail prices US$25/35 depending on model * Header for interfacing with external electronics * Can generate 1080p30 High Definition video * For further specs see http://en.wikipedia.org/wiki/Raspberry_Pi * People have been using the device for a variety of unusual purposes - http://www.raspberrypi.org/phpBB3/viewforum.php?f=15 All-in-all there seems to be many reasons why a Usenet group would be well used but to allow the Big 8 Management Board to make an informed decision if you would read and/or post to the proposed newsgroup please indicate your interest by replying on this thread. Followups are set to news.groups.proposals where discussions about the proposal can be carried out. CHARTER: Newsgroup comp.sys.raspberry-pi is for discussion of issues connected with Raspberry Pi computer systems including set up, programming, software, operating systems, interfacing, related hardware and projects. Posters are expected to abide by normal Usenet standards of decorum, and to ignore articles intended to disrupt the group. The usual suspects are prohibited (spam, binaries, direct advertising, etc.) PROCEDURE: For more information on the newsgroup creation process, please see: http://www.big-8.org/dokuwiki/doku.php?id=policies:creation Those who wish to influence the development of this RFD and its final resolution should subscribe to news.groups.proposals and participate in the relevant threads in that newsgroup. This is both a courtesy to groups in which discussion of creating a new group is off-topic as well as the best method of making sure that one's comments or criticisms are heard. All discussion of active proposals should be posted to news.groups.proposals To this end, the followup header of this RFD has been set to news.groups.proposals. If desired by the readership of closely affected groups, the discussion may be crossposted to those groups, but care must be taken to ensure that all discussion appears in news.groups.proposals as well. We urge those who would like to read or post in the proposed newsgroup to make a comment to that effect in this thread; we ask proponents to keep a list of such positive posts with the relevant message ID: Barney Fife, 4jgdnb60fsmzha7znz2dnuvz_rwdn...@sysmatrix.net) Such lists of positive feedback for the proposal may constitute good evidence that the group will be well-used if it is created. DISTRIBUTION: This document has been posted to the following newsgroups: news.announce.newgroups news.groups.proposals comp.lang.forth comp.lang.python comp.os.linux.misc PROPONENT: James Harris james.harris.1Agmail.com (replace A with @ - but please discuss the proposal on Usenet!) CHANGE HISTORY: 2013-03-09 Initial RFD -- http://mail.python.org/mailman/listinfo/python-list
Re: http://stackoverflow.com/questions/15311450/my-chat-client-freezes-up-after-beginning-threads
On 2013.03.09 09:26, Owatch wrote: Thing is, when I run the program. Nothing happens. Can somebody help point out what is wrong? (I've asked questions and researched for 3 days, without getting anywhere, so I did try) You defined a thread, but never created or started it. Also, why did you subclass threading.Thread? You also mentioned queues, but you didn't use them. Not tested, but shows the basics: import threading import queue import socket def process(): while alive: thing = things_to_process.get() # do stuff with the thing here things_to_process.task_done() alive = True host = 'localhost' port = things_to_process = queue.Queue() process_thread = threading.Thread(target=process) process_thread.start() sock = socket.socket() sock.connect((host, port)) while alive: try: data = sock.recv() except Exception: # should probably do different things for different errors in real code alive = False sock.close() process_thread.join() raise else: things_to_process.put(data) -- CPython 3.3.0 | Windows NT 6.2.9200 / FreeBSD 9.1 -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On Saturday, March 9, 2013 9:34:53 AM UTC-6, Kene Meniru wrote: OK. Sorry to have caused all the confusion. Let me try this again. Sounds to me like you should solve this problem in two manners: Interactive Input Create an interactive environment where the user can enter commands directly into the namespace using your API in real time, then when he is ready to see the result of those commands, he can call display command or push a display button and the App will run the appropriate outside programs to show the visualization. Scripts loaded at runtime If you prefer the user to write scripts, and then have your App read these scripts (and create visualizations from the commands within the scripts) then the only difference between step 1 and step 2 is *when* the commands are interpreted. In this case your app will *load* the scripts AFTER they are completely written (this could be done automatically by the app at runtime IF the path to these scripts is known, or could be accomplished by the user picking files in a dialog (Menu-RunScript). I think you are trying to create step 1 without the interactive environment. This is your mistake. Having users work with raw files and then *somehow* watching a raw file for certain display commands (in real time) is folly. Heck, when you edit a file in a text editor you are only seeing a representation of the file from the last time it was saved, and your app could never know when the file data and the file view where synchronized; without an asinine amount of foolish programming of course. If this is not what you want, then i suggest you create a simple representation of your code (or link to the actual code). -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
Dave Angel wrote: On 03/09/2013 10:34 AM, Kene Meniru wrote: To use my program the user needs a script file I will call user.py. Functions from my program must be imported into this file with something like from myapp import *. And does the user run this script by doing python user.py Yes myapp.py is a module in my program that has all the functions that the user needs to describe building components. There is also a main controller object that is imported into myapp.py module called app. When python parses user.py module, You presumably mean, When Python runs the script user.py When the user types and enters at the command line: python user.py the functions the user has provided creates building components which are then saved in a dictionary located in an object called doc that is part of my program. What program is that? Looks to me like you're writing a series of modules, a framework perhaps, that is invoked by the user script. Yes. I am writing many functions and classes in many modules that work together. The user is free to use the functions in myapp.py to describe building components. When this process is complete or when the user wants to view their work-in-progress, they have to place a function called view() on the last line in user.py. Don't you mean the code in user.py has to *call* the function app.view() when they're all done with defining the components? That has nothing to do with being the last line. Well... yes. The function is app.view() but it is not called automatically by the code in user.py. The following is an example of the contents of user.py ### begin user.py # from buildes import * site(Willow_Creek_Ct, 5) Create a site with name and number of boundaries. level(level1, 3000) level(level2, 3000) Create levels with name and height. setLevel(level1) Set the current level to place objects space(Dining, 5) Create a space with 5 sides (walls) linearSide(Dining-S1, 3683, 152, 0) Initialize the first side of space called Dining offset(Dining-S1, (3000, 0, 0)) Install the first side of Dining space called Dining-S1 view(POV) Exports objects to POV-Ray format ### end user.py # This function currently exports You mean writes files into the file system? Yes. the components into POV-Ray or OpenSCAD format. These are CAD programs that read script files to render or create images of the described artifacts. So this means that to view their work the user needs to run python on user.py to export the building and then run POV-Ray or OpenSCAD on the exported file to see the building. At that point, the user.py script has completed, and Python is done, right? Yes I want to make it possible for the user to preview the building components without having to use the external rendering programs. I can currently have the app object provide this preview but it means that the user will have to process user.py with python then exit the graphic window each time they need to see changes. What changes are those? You can't change a script while it's executing. Could you clarify this so I can rethink the following paragraph? Working on the user.py is an iterative process. The user adds new objects or changes the parameters of the objects already there and envokes python user.py each time to see the changes made. Just like using a program like LaTeX. You edit your text file and run LaTeX on the file to see the changes you made. The process continues until you finish the document. So the solution I am looking for is to have a graphic window open that watches user.py for changes. If there is a change the graphic window updates the rendition of the created components without further intervention by the user. However this means that the graphic must somehow run python to parse user.py and then be able to access the objects stored in doc so that the coordinates can be used to update the view. This is where I am having difficulty. -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On 03/09/2013 11:56 AM, Kene Meniru wrote: Dave Angel wrote: On 03/09/2013 10:34 AM, Kene Meniru wrote: To use my program the user needs a script file I will call user.py. Functions from my program must be imported into this file with something like from myapp import *. And does the user run this script by doing python user.py Yes myapp.py is a module in my program that has all the functions that the user needs to describe building components. There is also a main controller object that is imported into myapp.py module called app. When python parses user.py module, You presumably mean, When Python runs the script user.py When the user types and enters at the command line: python user.py the functions the user has provided creates building components which are then saved in a dictionary located in an object called doc that is part of my program. What program is that? Looks to me like you're writing a series of modules, a framework perhaps, that is invoked by the user script. Yes. I am writing many functions and classes in many modules that work together. The user is free to use the functions in myapp.py to describe building components. When this process is complete or when the user wants to view their work-in-progress, they have to place a function called view() on the last line in user.py. Don't you mean the code in user.py has to *call* the function app.view() when they're all done with defining the components? That has nothing to do with being the last line. Well... yes. The function is app.view() but it is not called automatically by the code in user.py. The following is an example of the contents of user.py ### begin user.py # from buildes import * site(Willow_Creek_Ct, 5) Create a site with name and number of boundaries. level(level1, 3000) level(level2, 3000) Create levels with name and height. setLevel(level1) Set the current level to place objects space(Dining, 5) Create a space with 5 sides (walls) linearSide(Dining-S1, 3683, 152, 0) Initialize the first side of space called Dining offset(Dining-S1, (3000, 0, 0)) Install the first side of Dining space called Dining-S1 view(POV) Exports objects to POV-Ray format ### end user.py # This function currently exports You mean writes files into the file system? Yes. the components into POV-Ray or OpenSCAD format. These are CAD programs that read script files to render or create images of the described artifacts. So this means that to view their work the user needs to run python on user.py to export the building and then run POV-Ray or OpenSCAD on the exported file to see the building. At that point, the user.py script has completed, and Python is done, right? Yes I want to make it possible for the user to preview the building components without having to use the external rendering programs. I can currently have the app object provide this preview but it means that the user will have to process user.py with python then exit the graphic window each time they need to see changes. What changes are those? You can't change a script while it's executing. Could you clarify this so I can rethink the following paragraph? Working on the user.py is an iterative process. The user adds new objects or changes the parameters of the objects already there and envokes python user.py each time to see the changes made. Just like using a program like LaTeX. You edit your text file and run LaTeX on the file to see the changes you made. The process continues until you finish the document. So the solution I am looking for is to have a graphic window open that watches user.py for changes. It would then have to be a separate executable. Are you really saying you want this window to keep running after the script ends? And that somehow it notices that the user has rerun the user.py script? Or could it simply be a window created during the user.py run that stays running till it's closed, which ends the script as well? If there is a change the graphic window updates the rendition of the created components without further intervention by the user. Is running the script considered intervention? Or do you mean literally that somebody watches the script for changes (eg. by watching the timestamp)? However this means that the graphic must somehow run python to parse user.py and then be able to access the objects stored in doc so that the coordinates can be used to update the view. This is where I am having difficulty. Either the graphic is in the same process, in which case the script can only be parsed once, or the graphic is in a second process, in which case you're talking some interesting interprocess communication (ipc). That's certainly do-able, but it's way beyond the scope of the kind of programming you've been talking about. But sometimes just using a regular file for transfer is
Re: Running external module and accessing the created objects
Rick Johnson wrote: On Saturday, March 9, 2013 9:34:53 AM UTC-6, Kene Meniru wrote: Interactive Input Create an interactive environment where the user can enter commands directly into the namespace using your API in real time, then when he is ready to see the result of those commands, he can call display command or push a display button and the App will run the appropriate outside programs to show the visualization. Scripts loaded at runtime If you prefer the user to write scripts, and then have your App read these scripts (and create visualizations from the commands within the scripts) then the only difference between step 1 and step 2 is *when* the commands are interpreted. In this case your app will *load* the scripts AFTER they are completely written (this could be done automatically by the app at runtime IF the path to these scripts is known, or could be accomplished by the user picking files in a dialog (Menu-RunScript). Please see my last response to Dave Angel. I think it is possible for a program to watch a file. I am not interested in menus which is why I am going this route. I could easily use PyQt to make this but I am not interested in graphical user interfaces. Are you are familiar with LaTeX? That is the system I very much want to emulate. I think you are trying to create step 1 without the interactive environment. This is your mistake. Having users work with raw files and then *somehow* watching a raw file for certain display commands (in real time) is folly. It is possible to watch files for changes without user intervention. If a change is detected (whether by file size or time) the file can be executed as all python modules can be using python FILENAME.py. How is this folly? Heck, when you edit a file in a text editor you are only seeing a representation of the file from the last time it was saved, and your app could never know when the file data and the file view where synchronized; without an asinine amount of foolish programming of course. If this is not what you want, then i suggest you create a simple representation of your code (or link to the actual code). My code is available at http://sourceforge.net/projects/buildes. The documentation is at http://buildes.sourceforge.net/. -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
Dave Angel wrote: So the solution I am looking for is to have a graphic window open that watches user.py for changes. It would then have to be a separate executable. This is my thinking too. Are you really saying you want this window to keep running after the script ends? And that somehow it notices that the user has rerun the user.py script? Or could it simply be a window created during the user.py run that stays running till it's closed, which ends the script as well? Following the idea that it should be a separate executable, the user does not have to run the script by doing python user.py as they would normally do. The window takes this over. It sits there watching for changes to user.py such as change in file size and/or time or if the user hits the enter key while it has focus. My question really is how can the graphics window have access to the objects saved in the dictionary of the doc object after running python user.py. It need to do this to be able to use their coordinates to redraw the view. If there is a change the graphic window updates the rendition of the created components without further intervention by the user. Is running the script considered intervention? Or do you mean literally that somebody watches the script for changes (eg. by watching the timestamp)? I do not understand. What I mean is that this happens automatically. The user no longer needs to do python user.py the graphics window now should do this for the user when changes are detected in user.py by watching timestamp for example. However this means that the graphic must somehow run python to parse user.py and then be able to access the objects stored in doc so that the coordinates can be used to update the view. This is where I am having difficulty. If you really want two processes, then you should consider having the user run the the graphic app, with a commandline parameter of user.py, and have it create the user.py process. The user.py process runs till it has created all the data, then sends it via some ipc to the graphic app. Once sent, it terminates. The graphic app reads the ipc stuff, updates its graphics, then idles, watching for timestamp changes on the user.py file. This sounds interesting. What is ipc. Can you give me an example? -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
Kene Meniru wrote: Dave Angel wrote: If you really want two processes, then you should consider having the user run the the graphic app, with a commandline parameter of user.py, and have it create the user.py process. The user.py process runs till it has created all the data, then sends it via some ipc to the graphic app. Once sent, it terminates. The graphic app reads the ipc stuff, updates its graphics, then idles, watching for timestamp changes on the user.py file. This sounds interesting. What is ipc. Can you give me an example? Actually there is a possible simple solution consistent with the way my program works already. I can just provide another exporter for OpenGL that pyglet.window.Window() subclass will be able to read. So I will provide another parameter for OGL so the user can use view(OGL). When the user.py script is run, all objects in doc are converted and exported to a file that the graphics window is watching. The contents will then be used to update the view. So this means that the user or the graphics window object can run python user.py it no longer matters how. Thanks for your comments. -- Kene :: kemen...@gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Running external module and accessing the created objects
On Saturday, March 9, 2013 11:21:20 AM UTC-6, Kene Meniru wrote: Please see my last response to Dave Angel. I think it is possible for a program to watch a file. I am not interested in menus which is why I am going this route. I could easily use PyQt to make this but I am not interested in graphical user interfaces. Yes, using a non-GUI interface is always much simpler to code than a GUI. I can see the merit in that approach. It is possible to watch files for changes without user intervention. If a change is detected (whether by file size or time) Indeed, but the file data on disc and the file data in the text editor cannot be guaranteed to be exact representations of each other at any random sample of time. the file can be executed as all python modules can be using python FILENAME.py. I understand that Python files can be executed (as we all do). How is this folly? Well i don't have enough information *yet* to decide if your program design is folly, but i can assure you that your explanations of how this program will function are. My problem with your workflow is that it ignores the need to constantly save the edited file data back to disc, because i assume you are using a text editor to edit the .py files. Sure, you could create a behavior of the editor to save the changes after every keystroke, or every newline, or whatever; but you failed to mentioned how any of this will work. My code is available at http://sourceforge.net/projects/buildes. The documentation is at http://buildes.sourceforge.net/. Well GEE-GOLLY-GARSH, thanks for finally posting something we can draw coherency from. May i suggest that next time you post the links in the very first post? I mean, i like playing guess the number as much as the next guy, but geez! -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling J from Python
Den måndagen den 5:e februari 2007 kl. 14:48:49 UTC skrev Gosi: It is quite easy to call J from Python http://groups.google.com/group/J-Programming/browse_thread/thread/5e84b75667f5f64e http://www.jsoftware.com/jwiki/Scripts/qjide -- http://mail.python.org/mailman/listinfo/python-list
Re: Why are timezone aware and naive datetimes not distinct classes?
On Sat, 09 Mar 2013 09:01:17 +1100, Chris Angelico wrote: As I see it, a naive datetime simply does not have a timezone. The distinction between aware and naive isn't whether the .tzinfo member is None, but whether self.utcoffset() returns None (which can occur either if self.tzinfo is None or if self.tzinfo.utcoffset(self) returns None). IOW, an aware time/datetime can be converted to a UTC time/datetime, a naive one can't, although it can still have a timezone which isn't referenced to UTC. The distinction may actually matter for times in the far future, as you can't reliably predict how or when timezone defintions will change. Converting a future datetime to UTC based upon the current timezone rules is at best an estimate. For this reason, appointments should always be kept in local time, so that you don't get errors if the timezone rules (or the timezone) change between the time an appointment is made and the time it occurs. -- http://mail.python.org/mailman/listinfo/python-list
Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
On 2013-03-09, Wong Wah Meng-R32813 r32...@freescale.com wrote: Your entire post is in your signature block. Don't do that. Many people have newsreaders or e-mail clinets configured to hide or ignore signature blocks. Yes I have verified my python application is reusing the memory (just that it doesn't reduce once it has grown) and my python process doesn't have any issue to run even though it is seen taking up more than 2G in footprint. Then there's nothing wrong with Python. My problem is capacity planning on the server whereby since my python process doesn't release memory back to the OS, In Unix there is no way to release heap memory (which is what you're talking about) back to the OS except for terminating the process. the OS wasn't able to allocate memory when a new process is spawn off. You need to either get more memory, change your Python program to use less memory, or have your Python program terminate in order to return memory to the OS. Perhaps you can put the memory hungery portion of your processing into a subprocess that terminates when it's completed its work? -- Grant Edwards grant.b.edwardsYow! Don't hit me!! I'm in at the Twilight Zone!!! gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling J from Python
On 09/03/2013 18:49, gos...@gmail.com wrote: Den måndagen den 5:e februari 2007 kl. 14:48:49 UTC skrev Gosi: It is quite easy to call J from Python http://groups.google.com/group/J-Programming/browse_thread/thread/5e84b75667f5f64e http://www.jsoftware.com/jwiki/Scripts/qjide Got a right slagging six years ago when first posted, what's changed to make it worth evaluating? -- Cheers. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: Why are timezone aware and naive datetimes not distinct classes?
In article pan.2013.03.09.19.14.59.699...@nowhere.com, Nobody nob...@nowhere.com wrote: The distinction may actually matter for times in the far future, as you can't reliably predict how or when timezone defintions will change. Sadly, this is true. For this reason, appointments should always be kept in local time, so that you don't get errors if the timezone rules (or the timezone) change between the time an appointment is made and the time it occurs. Well, sort of. Future scheduled activities (which I assume is what you mean by appointments) should be kept in whatever timezone makes sense for that activity. For example, I'm on NASA's mailing list to receive alerts when the ISS is going to be visible to the naked eye at my location. The last one said: Time: Wed Feb 27 6:17 PM, Visible: 4 min, Max Height: 54 degrees, Appears: W, Disappears: SE If I wanted to put that on my calendar, I really should convert it to UTC and record it that way. If the folks who mess with these things were to suddenly decide to move when DST starts, the space station isn't going to adjust its orbit to accommodate that. Likewise, let's say I make an appointment to have a phone call with somebody in Caliornia (I'm in New York) at some future date. I put on my calendar Call with Joe, 5 PM. Joe puts on his, Call with Roy, 2 PM. The idiots in Albany and/or Sacramento decide to mess with the timezones and one state changes the rules. We're going to miss our phone call. Had we both recorded the arranged time in UTC, we'd get to talk to each other. -- http://mail.python.org/mailman/listinfo/python-list
how to déplace a circle in canvas python?
how to diplace a circle in canvas tkinter python from position to an auther position by a mouse click 'press' 'relase' or by delete the déplicated objects in canvas?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
In article khg1v3$l7q$1...@reader2.panix.com,
Grant Edwards invalid@invalid.invalid wrote:
In Unix there is no way to release heap memory (which is what you're
talking about) back to the OS except for terminating the process.
That's not quite true. The man page for BRK(2) (at least on the Linux
box I happen to have handy) says:
brk() and sbrk() change the location of the program break, which
defines the end of the process's data segment (i.e., the program
break is the first location after the end of the uninitialized data
segment). Increasing the program break has the effect of allocating
memory to the process; decreasing the break deallocates memory.
So, in theory, it's possible. I just ran this C program:
#include unistd.h
#include time.h
int main(int argc, char** argv) {
struct timespec t;
t.tv_sec = 10;
t.tv_nsec = 0;
nanosleep(t, NULL);
sbrk(500 * 1024 * 1024);
nanosleep(t, NULL);
sbrk(-500 * 1024 * 1024);
nanosleep(t, NULL);
}
while watching the process with ps. I could see the process appear and
for the first 10 seconds it had a VSZ of 4156. Then, for the next 10
seconds, the VSZ was 516156, then it went back down to 4156.
$ while sleep 1; do ps augx | grep a.out | grep -v grep; done
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 516156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
roy 6657 0.0 0.0 4156 356 pts/10 S+ 19:56 0:00 ./a.out
In practice, unless you go to extraordinary lengths (i.e. avoid almost
all of the standard C library), the break is going to be managed by
malloc(), and malloc() provides no way to give memory back (insert
handwave here about mmap, and another handwave about various versions of
malloc). But, that's due to the way malloc() manages its arena, not
anything fundamental about how Unix works.
--
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Re: itertools.filterfalse - what is it good for
can anybody point out a situation where you really need itertools.filterfalse() ? Sometimes you get the predicate as a parameter to another function. This way if you want to filter out things you can easily do it. Other language (such as Clojure) have a complement function that removes the need of filterfalse. For example (Python 3): def percent_spam(is_spam, documents): n_spam = sum(1 for _ in filter(is_spam, documents)) n_ham = sum(1 for _ in filterfalse(is_spam, documents)) return float(n_spam) / (n_ham + n_spam) -- http://mail.python.org/mailman/listinfo/python-list
Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
On 2013-03-09, Roy Smith r...@panix.com wrote: In article khg1v3$l7q$1...@reader2.panix.com, Grant Edwards invalid@invalid.invalid wrote: In Unix there is no way to release heap memory (which is what you're talking about) back to the OS except for terminating the process. That's not quite true. The man page for BRK(2) (at least on the Linux box I happen to have handy) says: brk() and sbrk() change the location of the program break, which defines the end of the process's data segment (i.e., the program break is the first location after the end of the uninitialized data segment). Increasing the program break has the effect of allocating memory to the process; decreasing the break deallocates memory. So, in theory, it's possible. Well spotted. I would have bet money (OK, not a lot), that sbrk() only accepted positive increment values. I seem to have conflated what sbrk() will accept and the fact that the C library's malloc/free calls never call sbrk() with a nagative number. [... nicely done demonstraction of negative sbrk() parameter usage ...] In practice, unless you go to extraordinary lengths (i.e. avoid almost all of the standard C library), the break is going to be managed by malloc(), and malloc() provides no way to give memory back (insert handwave here about mmap, and another handwave about various versions of malloc). But, that's due to the way malloc() manages its arena, not anything fundamental about how Unix works. Indeed. What I should have said was that there's no way to return to the OS memory obtained via calls to malloc() et al, and those are the calls that good C programmers (like the maintainers of CPython) use. In theory, you could modify the C library so that calls to free() might return memory to the OS. Sometimes. If you're lucky. The problem is that if there's _one_byte_ of memory in use at the end of the heap region, it doesn't matter if there's an unused 16GB chunk in the middle -- it can't be returned to the OS. -- Grant Edwards grant.b.edwardsYow! Look DEEP into the at OPENINGS!! Do you see any gmail.comELVES or EDSELS ... or a HIGHBALL?? ... -- http://mail.python.org/mailman/listinfo/python-list
Re: how to déplace a circle in canvas python?
On Saturday, March 9, 2013 1:47:43 PM UTC-6, olsr@gmail.com wrote: how to [translate] a circle in canvas tkinter python from [one] position to an [another] position Well translation is by definition: changing an objects position by a mouse click 'press' ['release'] or by delete the [duplicated] objects in canvas?? Here's an idea: how about you learn how to translate a Tkinter canvas object via code BEFORE you try to do it via user input? This is called code evolution along an intelligent linear path, not some random shots in the dark. How do you do this you ask, well i'll give you a hint, follow this yellow brick road for enlightenment. STEP 1 Take a look at the following methods available to the Tkinter canvas widget here: http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/canvas-methods.html Can you find a method that will translate or displace or (insert another synonym here), a canvas object by passing two (x,y) Cartesian coordinates? Once you can accomplish step 1, we can move on to step 2. STEP 2 Solving Step 1 is compulsory! -- http://mail.python.org/mailman/listinfo/python-list
Re: http://stackoverflow.com/questions/15311450/my-chat-client-freezes-up-after-beginning-threads
On Mar 9, 6:35 pm, Andrew Berg bahamutzero8...@gmail.com wrote: On 2013.03.09 09:26, Owatch wrote: Thing is, when I run the program. Nothing happens. Can somebody help point out what is wrong? (I've asked questions and researched for 3 days, without getting anywhere, so I did try) You defined a thread, but never created or started it. Also, why did you subclass threading.Thread? You also mentioned queues, but you didn't use them. Not tested, but shows the basics: import threading import queue import socket def process(): while alive: thing = things_to_process.get() # do stuff with the thing here things_to_process.task_done() alive = True host = 'localhost' port = things_to_process = queue.Queue() process_thread = threading.Thread(target=process) process_thread.start() sock = socket.socket() sock.connect((host, port)) while alive: try: data = sock.recv() except Exception: # should probably do different things for different errors in real code alive = False sock.close() process_thread.join() raise else: things_to_process.put(data) -- CPython 3.3.0 | Windows NT 6.2.9200 / FreeBSD 9.1 Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: This mail never gets delivered. Any ideas why?
mail = form.getvalue('mail')
id what the user types in an html form and click submits. this can be a non
valid email of course i just check if there is a '@' in the mail address.
But will the mail, gets delivered even if mail's value is invalid?
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Re: Set x to to None and del x doesn't release memory in python 2.7.1 (HPUX 11.23, ia64)
In article khg6f3$cfr$1...@reader2.panix.com,
Grant Edwards invalid@invalid.invalid wrote:
What I should have said was that there's no way to return to the OS
memory obtained via calls to malloc() et al.
That's true (for certain values of et al).
and those are the calls that good C programmers (like the
maintainers of CPython) use.
Well, there is mmap, which is exposed via the Python mmap module.
Python doesn't have anything like C++'s placement new, so there's no
way to use that memory to hold generic Python objects, but you can
certainly use mmap to allocate a large chunk of memory, use it, and then
give it back to the OS. For example:
#!/usr/bin/env python
import mmap
import time
time.sleep(5)
f = open('my-500-mbyte-text-file')
data = mmap.mmap(f.fileno(), 0, prot=mmap.PROT_READ)
count = 0
while 1:
line = data.readline()
if not line:
break
count += 1
print count
time.sleep(5)
data.close()
time.sleep(5)
When I run that and watch the process size (like I did with the previous
example), you can see the process grow when mmap() is called, and shrink
again when the segment is closed.
I have to admit, in all the years I've been using Python, this is the
first time I've ever used the mmap module. Even for long running
processes, the automatic memory management that Python provides out of
the box has always been good enough for me. But, it's nice to know mmap
is there if I need to do something unusual.
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pexpect on windows - child process of another child process - quick question
Hi All We have a windows application to install on console mode typing on cygwin shell app.exe -i console On Windows process window, we could see this kicks a process named ia which in turn kicks off ia_launcher to kick off another java.exe process. ie app.exe -- kick off -- ia -- kicks off -- ia_launcher --kicks off -- java.exe We like to use pexpect to interact with the ia_launcher process, which seems to control the stdin/stdout of its own shell window to allow user to enter responses. So far, our research shows most examples are related to use of direct child process, in this case, app.exe process interacting with pexpect. How do we go about using pexpect to talk to app.exe's grandchild's shell window ? We set Don L's expect example where he could set id $spawn_id between direct child processes but it's still to us how we can accomplish our goal. Thanks for your kind help Sincerely -- http://mail.python.org/mailman/listinfo/python-list
Re: Why are timezone aware and naive datetimes not distinct classes?
On Sun, Mar 10, 2013 at 6:14 AM, Nobody nob...@nowhere.com wrote: On Sat, 09 Mar 2013 09:01:17 +1100, Chris Angelico wrote: As I see it, a naive datetime simply does not have a timezone. The distinction between aware and naive isn't whether the .tzinfo member is None, but whether self.utcoffset() returns None (which can occur either if self.tzinfo is None or if self.tzinfo.utcoffset(self) returns None). IOW, an aware time/datetime can be converted to a UTC time/datetime, a naive one can't, although it can still have a timezone which isn't referenced to UTC. I stand corrected. Though the distinction I made in my first paragraph is still valid: an aware datetime represents an instant in time, a naive one is a tagged piece of arbitrary data. On Sun, Mar 10, 2013 at 6:40 AM, Roy Smith r...@panix.com wrote: Future scheduled activities (which I assume is what you mean by appointments) should be kept in whatever timezone makes sense for that activity. Agreed; and in some specific circumstances, it's even possible to fight the whole mess of timezones. My online Dungeons and Dragons group schedules everything on UTC - for example, the server quotes the current time as Sat 22:26, and I have a session at Sun 02:00, so anyone can figure out how long until session without worrying about timezones or Daylight Robbery Time. Of course, that _does_ come at a cost; mainly it's the USA-based players who get confused (which surprises me somewhat, tbh). ChrisA -- http://mail.python.org/mailman/listinfo/python-list
how to get id of a line from his coordonée in tkinter python?
how to get id of a line from his coordonée in tkinter python? -- http://mail.python.org/mailman/listinfo/python-list
Re: Any other screenwriters?
On Friday, March 8, 2013 11:36:05 PM UTC-6, richard...@gmail.com wrote:
Noted. But it seems to be the syntax the screenwriters and
their programmers have settled on for now. It's all
working pretty well. Just no Python or command-line
implementations yet. I didn't post seeking help to make a
new markdown system for screenwriters. That would surely
be out of my league.
Well *everything* will perpetually be out of your league until you start
challenging yourself to learn new things.
Sorry if I was unclear. Sure. I have several programs like
this and yes we use them once production starts, but it's
nice to be able to work in your text editor for as long as
possible. Faster. More versatility.
I agree.
So everybody is looking for a fast way to make PDFs in
screenplay format from simple markdown text.
Well, well.
This is your golden opportunity Rick. You seem to have found a niche problem
that needs solving, but more importantly, you have experience as a screen
writer (and programmer (hobbyist or not)) giving you valuable insight into what
features can improve the workflow of a simple ASCII markdown syntax.
And, lucky for you, making the translation from Ruby to Python does not require
you to become highly proficient with Ruby, NO, once you understand a few key
differences you can start translating code into something usable.
I think the greatest barrier to learning Ruby is that it has too many ways to
achieve the same result[1], which is opposite of Python's philosophy[2]. A few
aspects that can trip you up are:
* White-space is NOT significant
* String literals delimited by using single quote chars
are raw, and string literals delimited by double quote
chars are not.
* Module encapsulation is NOT automatic like in Python,
instead, it must be explicitly declared using module
[code here] end syntax! Another side effect of this is
if you write (what you think is a function) in global
namespace, you are actually writing a method for
Object, and since Object is inherited by almost
everything in Ruby, now ALL those subclasses contain your
new so-called function; Ha! Talk about an introspection
nightmare! So be sure to encapsulate that code fella.
* Ruby uses the if-elsif-else progression, whereas Python
uses if-elif-else. There is also a case statement
available in Ruby.
* Object Oriented Programming
Ruby is more Object oriented than Python (which can be a good thing!), for
instance, no more global function nightmare! Objects have methods and methods
exist where they should!
RUBY: sequence.map{|item| item+1}
PYTHON_1: map(lambda item:item+1, sequence)
# via list comprehension:
PYTHON_2: [item+1 for item in sequence]
# via generator expressions!
PYTHON_3: (item+1 for item in sequence)
Hmm, seems old Tim Toady is like a plague of, well... toads!
Another side effect of Rubys strong OOP is that you can intelligently chain:
sequence.map{|x| x+1}.uniq.sort.length
...if you tried that in Python, it would be a mess only a devoted lisper could
appreciate:
len(set(map(lambda x:x+1, sorted(sequence
o_O ¡Ay, caramba!
* Ruby Blocks can be written many *MANY* ways
Blocks in ruby will most likely use curly braces like this:
sequence.each{|item| do_something_with(item)}
...but they could also legally use the do..end delimiters like this:
sequence.each do |item| do_something_with(item) end
...or even look exactly like Python code!:
for item in sequence
do_something_with(item)
end
Mama-Mia! That's three ways of accomplishing the exact same thing, and the
worse part is, these could even be intermixed in the same script file!
REFERENCES
[1] ThereIsMoreThanOneWayToDoIt (affectionately referred to as: Tim Toady)
http://en.wikipedia.org/wiki/There%27s_more_than_one_way_to_do_it
[2] The Python Zen
http://www.python.org/dev/peps/pep-0020/
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Re: Why are timezone aware and naive datetimes not distinct classes?
On Sat, 09 Mar 2013 14:40:14 -0500, Roy Smith wrote: Future scheduled activities (which I assume is what you mean by appointments) should be kept in whatever timezone makes sense for that activity. For example, I'm on NASA's mailing list to receive alerts when the ISS is going to be visible to the naked eye at my location. The last one said: Time: Wed Feb 27 6:17 PM, Visible: 4 min, Max Height: 54 degrees, Appears: W, Disappears: SE If I wanted to put that on my calendar, I really should convert it to UTC and record it that way. Indeed; that is an appropriate use of UTC. Likewise, let's say I make an appointment to have a phone call with somebody in Caliornia (I'm in New York) at some future date. I put on my calendar Call with Joe, 5 PM. Joe puts on his, Call with Roy, 2 PM. The idiots in Albany and/or Sacramento decide to mess with the timezones and one state changes the rules. We're going to miss our phone call. Had we both recorded the arranged time in UTC, we'd get to talk to each other. Maybe. But if the time was chosen so as not to conflict with other activites, changes to timezone(s) will often result in corresponding changes to schedules, meaning that one or both parties will no longer be available at the original UTC time (or even at any time, if both have busy schedules). Which is why future scheduled activities which require multiple people to physically meet at a specific place and time are normally scheduled in terms of the /de jure/ timezone of that location, as applicable on that date, rather than in UTC or even a named timezone. Similarly, the policies of a corporation which operates in multiple timezones within a single country may dictate times which are common (in HH:MM terms) to all locations but which are interpreted according to each location's /de jure/ timezone (e.g. fast food chains' breakfast menus). -- http://mail.python.org/mailman/listinfo/python-list
Re: how to get id of a line from his coordonée in tkinter python?
On Saturday, March 9, 2013 4:46:40 PM UTC-6, olsr@gmail.com wrote:
how to get id of a line from his coordonée in tkinter python?
Each time you create a canvas item, be it a rectangle, line, circle, or
whatever..., the id of that object is returned as an integer. All you have to
do is save the id into a variable.
rectID = canvas.create_rectangle(...)
Now you can pass that unique id into many of the methods that exist for canvas
items.
canvas.delete(rectID)
canvas.coords(rectID)
canvas.bbox(rectID)
*Sarcastic Sam quipped*: Rick, not everybody can be as smart as you! What if
we forgot to save the return value into a variable? Besides, you cannot expect
us to create a variable to hold *every single* id of *every single* canvas
object; that would be ridiculous!
Indeed it would Sam. Besides, integer tags are not easy to remember, and they
are created by the canvas object (which is out of your control).
But before you throw the computer out the window, be aware that the canvas
allows you to tag each canvas item by passing one or more strings, using the
tags=... argument, into the canvas.create_X(args) methods.
py canvas.create_rectangle(0,0,10,10, fill='red', tags='red_rect')
py canvas.coords('red_rect')
(0,0,10,10)
PS: Hopefully you solved that other issue.
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Re: Pygame mouse cursor load/unload
On Saturday, March 2, 2013 7:56:31 PM UTC-6, Alex Gardner wrote: I am in the process of making a pong game in python using the pygame library. My current problem is that when I move the mouse, it turns off as soon as the mouse stops moving. The way I am doing this is by making the default cursor invisible and using .png files as replacements for the cursor. Perhaps my code would best explain my problem. I will take help in any way that I can. Here are the links that contain my code: Main class: http://pastebin.com/HSQzX6h2 Main file (where the problem lies): http://pastebin.com/67p97RsJ . If the links yield nothing, please let me know (agardner...@gmail.com) I followed your advice, but now I have a drawing problem. I simply tried rewriting the paddle with a black one, but its failing. I would like to pester you fine folks one last time. The code is here: http://pastebin.com/gVPPJYWs I really appreciate your help and am learning from your advice. Thank you so much, Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: Pygame mouse cursor load/unload
On Saturday, March 2, 2013 7:56:31 PM UTC-6, Alex Gardner wrote: I am in the process of making a pong game in python using the pygame library. My current problem is that when I move the mouse, it turns off as soon as the mouse stops moving. The way I am doing this is by making the default cursor invisible and using .png files as replacements for the cursor. Perhaps my code would best explain my problem. I will take help in any way that I can. Here are the links that contain my code: Main class: http://pastebin.com/HSQzX6h2 Main file (where the problem lies): http://pastebin.com/67p97RsJ If the links yield nothing, please let me know (agardner...@gmail.com) I would like to bother you fine folks one last time! There are drawing problems that I am running into. The paddle keeps on moving but it doesn't rewrite the black paddle. This is a problem because the paddle just keeps leaving a green trail. The code is here: http://pastebin.com/gVPPJYWs I feel as though I am missing something... -- http://mail.python.org/mailman/listinfo/python-list
Building importable _tkinter on Windows
If you have tried to build _tkinter on Windows from the cpython repository, and have 'import tkinter' work, please share your experience, successful or not. I and another person have both failed. Following the directions in the devguide (and for one step, PCBuild/readme), I did essentially the following. * download and install TortoiseHG and an svn client (for external.bat) * download and install c++ 2010 express * in directory X, clone the python.org hg repository as cpython * in X/cpython, run Tools/buildbot/external.bat to fetch and compile tcl/tk and other external dependencies. * run visual studio with X/cpython/PCBuild/pcbuild.sln (I just double click on the .sln file. Choose c++ 2010 if other compilers are listed. * build debug version of 3.4 (F7), stored as .../PCBuild/python_d.exe. This also builds in the same directory things like _bz2_d.pyd and _lzma_d.pyd (whose dependencies are also fetched by external.bat) and _tkinter_d.pyd, apparently without error. The last is 43 kb. That is smaller than the others, but reasonable considering that it just forwards calls to tk. My installed 3.3 _tkinter.pyd is 41 kb. * run python_d.exe. sys.path is ['', 'F:\\Python\\dev\\cpython\\PCbuild\\python34_d.zip', 'F:\\Python\\dev\\cpython\\DLLs', 'F:\\Python\\dev\\cpython\\lib', 'F:\\Python\\dev\\cpython\\PCbuild', # where _tkinter, etc are 'F:\\Python\\dev\\cpython', 'F:\\Python\\dev\\cpython\\lib\\site-packages'] import bz2, lzma # these import _bz2 and _lzma import tkinter Traceback (most recent call last): File stdin, line 1, in module File F:\Python\dev\cpython\lib\tkinter\__init__.py, line 36, in module from tkinter import _fix File F:\Python\dev\cpython\lib\tkinter\_fix.py, line 65, in module import _tkinter ImportError: DLL load failed: The specified module could not be found. [83479 refs, 32096 blocks] My two hypotheses: 1. There is something wrong with _tkinter_d.pyd in particular such that it is not recognized as a dll file. To test this, I renamed my installed _tkinter, copied and renamed _tkinter_d, ran installed python 3.3, and got a similar error ImportError: DLL load failed: %1 is not a valid Win32 application. Perhaps this verifies the hypothesis, perhaps it is due to a mismatch between normal builds and debug builds. 2. CPython somehow special-cases the _tkinter import so that it fails in the fresh build environment. This seems dubious, but who knows? Since the Windows buildbots build and test cpython more or less the same way, test/test_tkinter should pick up the same problem -- *if* it is actually run, but because of some problems with the test suite, I am not sure it is, rather than being skipped. Or maybe there is some significant small different in the buildbot process. Does anyone have any idea what else I might do? I expect to eventually post on pydev or the tracker, but I wanted to first try to collect more information here (which I wish more people would do). -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
gmreader - a terminal app for listening to your emails
Gmail message test-to-speech reader I used imaplib along with BeautifulSoup to make this run. It uses system calls to run the tts functions. It's all a work in progress, and if you see a bug, you are welcome to to make a pull request or open an issue. https://github.com/jawerty/gmreader -- http://mail.python.org/mailman/listinfo/python-list
pyqt4 qt license
i want to develop a GUI application that will be sold. i want to use pyqt4. can i download and use the GML version during the development and then buy the commercial verion beofore i distribute the application ? commercial version means LGPL? i think i am comfused so please someone clarify on versions and licences. somewhere i also noticed that there is a qt license ? will i need this also ? Thank you in advance -- http://mail.python.org/mailman/listinfo/python-list
pyqt4 qt license
hello, i want to develop a GUI application that will be sold. i want to use pyqt4. can i download and use the GPL version during the development and then buy the commercial verion beofore i distribute the application ? commercial version means LGPL? i think i am comfused so please someone clarify on versions and licences. somewhere i also noticed that there is a qt license ? will i need this also ? Thank you in advance -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 qt license
On Sat, Mar 9, 2013 at 9:08 PM, pitsa...@gmail.com wrote: hello, i want to develop a GUI application that will be sold. i want to use pyqt4. can i download and use the GPL version during the development and then buy the commercial verion beofore i distribute the application ? commercial version means LGPL? i think i am comfused so please someone clarify on versions and licences. somewhere i also noticed that there is a qt license ? will i need this also ? Thank you in advance -- http://mail.python.org/mailman/listinfo/python-list I am not sure if this is the right place for clarifying Licences issues. But I am sure that you are touching a very sensitive issue about how to mix licenses for commercial products. -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 qt license
On Mar 9, 9:08 pm, pitsa...@gmail.com wrote: hello, i want to develop a GUI application that will be sold. i want to use pyqt4. can i download and use the GPL version during the development and then buy the commercial verion beofore i distribute the application ? Arguably, yes. From pyqt4's website: Yes, you can re-license your application under a commercial license so long as you have purchased appropriate commercial PyQt licenses before you start to sell it. and also: The availability of the LGPL version of Qt means that it is possible to evaluate using that and the GPL version of PyQt while still being able to re-license any code written during an evaluation in a future closed source application. commercial version means LGPL? i think i am comfused so please someone clarify on versions and licences. There is currently no version of PyQT licensed with LGPL. They refer to their commercial license as their commercial license. somewhere i also noticed that there is a qt license ? will i need this also ? Yes. PyQT is a wrapper for Python around QT, so you would need both. QT has, according to the site, both a GPL and LGPL version of their license. You can read up on GPL and LGPL by Googling about it, but in a nutshell, for commercial applications, of the two, LGPL is what you want. Do you know about PySide? It's another wrapper for QT that is licensed as LGPL and is free software. I don't know it's current state of development, though. Last Twitter update was about a year ago. -- http://mail.python.org/mailman/listinfo/python-list
Re: read and write the same text file
On Sat, 09 Mar 2013 10:47:34 -0500, Roy Smith wrote:
In article c41028f7-e457-4a2b-99f4-c473eaadd...@googlegroups.com,
iMath redstone-c...@163.com wrote:
def text_process(file):
with open(file,'r') as f:
text = f.read()
with open(file,'w') as f:
f.write(replace_pattern.sub('',text))
At a minimum, you need to close the file after you read it and before
you re-open it for writing.
The with statement automatically does that. When the indented block --
in this case, a single line text = f.read() -- completes, f.close() is
automatically called.
Technically, this is a property of file objects, not the with statement.
The with statement merely calls the magic __exit__ method, which for file
objects closes the file.
There's a variety of ways you could achieve the same effect. You might
open the file once, in read-write mode, read the contents, rewind to the
beginning with seek(), then write the new contents. You might also
write the modified data out to a new file, close it, and then rename it.
But, open, read, close, open, write, close is the most straight-forward.
All of those techniques are acceptable for quick and dirty scripts. But
for professional applications, you want something which is resistant to
data loss. The problems happens when you do this:
1. Read file.
2. Modify data.
3. Open file for writing. # This deletes contents of the file!
4. Write data.
5. Flush data to the hard drive.
Notice that there is a brief time frame where the old data is destroyed,
but the new data hasn't been saved to the hard drive yet. This is where
you can get data loss if, say, the power goes off.
So a professional-quality application should do something like this:
1. Read file.
2. Modify data.
3. Open a new file for writing.
4. Write data to this new file.
5. Flush data to the hard drive.
6. Atomically replace the original file with the new file.
Since sensible operating systems promise to be able to replace as a
single atomic step, guaranteed to either fully succeed or not occur at
all, this reduces the risk of data corruption or data loss significantly.
Even if you're using an OS that doesn't guarantee atomic replacement
*cough* Windows *cough* it still decreases the risk of data loss, just
not as much as we would like.
But having said all that, for normal use, a simple read-write cycle is
still pretty safe, and it's *much* simpler to get right.
--
Steven
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Re: pyqt4 qt license
On 03/09/2013 07:08 PM, pitsa...@gmail.com wrote: hello, i want to develop a GUI application that will be sold. i want to use pyqt4. can i download and use the GPL version during the development and then buy the commercial verion beofore i distribute the application ? commercial version means LGPL? i think i am comfused so please someone clarify on versions and licences. Nope. Commerical means you buy a royalty-free license to use their product in a proprietary project. In other words you buy the right to use their code in a way that's compatible with your own code's distribution scheme. somewhere i also noticed that there is a qt license ? will i need this also ? You must be aware of the licenses of each individual part of the stack and honor their terms! This is true of *any* library you use, and code from *any* source. Open source does not mean public domain and you don't automatically have a right to use it in your own project. If you are using open source components in a proprietary project, you might need to consult a lawyer if you are unsure of the use terms you are dealing with or your obligations under those terms under copyright law. You have to follow the appropriate license for Qt (LGPL, so no biggy for you if you don't modify Qt itself), PyQt (GPL only or proprietary royalty-free), Python itself (not a problem since you aren't modifying it and you can redistribute it), and any and all Python libraries you might use. From what I can tell things in the standard library are fine, but watch out for third-party libraries. The licenses are not always compatible with proprietary code. As for PyQt, unless you pay for the proprietary, royalty-free license for PyQT (before or after development), then you have to use the GPL for your project, since those are the terms the free version of PyQt is released under. This is a deliberate choice by the company that makes it to secure a revenue stream. There is an alternative to PyQt, PySide, which is under the LGPL and compatible with a closed-source project. -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 qt license
Please correct me if im wrong.. PySide is LGPL and is free and by using that someone can develop commercial (and non commercial) software, while being able at the same to choose between both close and open Source. PyQT4 Commercial Licence costs more than 300 Euro and by using that someone can develop commercial software while being again able to choose between both close and open Soruce. PyQT4 GPL Licence is free and by using that someone can develop only non-commercial software. What about the source here? Could that be both open and close? Can someone develop a closed source but NON-commercial software, by using PyQT4 GPL license? Τη Κυριακή, 10 Μαρτίου 2013 5:31:21 π.μ. UTC+2, ο χρήστης CM έγραψε: Yes. PyQT is a wrapper for Python around QT, so you would need both. QT has, according to the site, both a GPL and LGPL version of their license. If someone used PySide, he should again use in addition one of those 2 above QT licences? Last question: Could someone just buy the PyQT4 commercial licence and use the LGPL licence of QT in his CLOSED source commercial software? (Which i believe is free :S) Or does LGPL mean that the source should be open? Or i should better ask, Does any of those 2 Licenses cost any money? Or they are free? Forgive me for all these questions im very interested in this topic too. THX 4 your time!! Tellidis your Greek? :) -- http://mail.python.org/mailman/listinfo/python-list
Re: This mail never gets delivered. Any ideas why?
Any ideas why the mail never gets delivered? -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 qt license
D. Xenakis wrote: Can someone develop a closed source but NON-commercial software, by using PyQT4 GPL license? no, by definition of GPL: if you are using a GPL library, you must distribute your software as GPL. (the GPL does not care about commercial / non commercial) http://www.gnu.org/licenses/gpl-faq.html#IfLibraryIsGPL -- ZeD -- http://mail.python.org/mailman/listinfo/python-list
Re: pyqt4 qt license
On 03/09/2013 09:45 PM, Vito De Tullio wrote: D. Xenakis wrote: Can someone develop a closed source but NON-commercial software, by using PyQT4 GPL license? no, by definition of GPL: if you are using a GPL library, you must distribute your software as GPL. (the GPL does not care about commercial / non commercial) http://www.gnu.org/licenses/gpl-faq.html#IfLibraryIsGPL Just to be clear here, the GPL isn't a magical license. It doesn't arbitrarily infect your code and force you to use the GPL on your own code. And no matter what license you use, you can re-license your code later under any terms you wish, since you own the copyright on the code. Here's the vital part: The moment you distribute your code, if you use a GPL library, then unless you also release your code under the GPL also, you are now in a copyright violation situation. You have three options: 1. License your code in a compatible way so that you're following the terms of the open source license the library you are using asks of you. IE release your source code under the terms of the GPL. 2. Remove the GPL'd library and either implement the lost functionality yourself (also know as write your own dang code), or replace the GPL'd library with an equivalent library under a different, compatible license. In the case of PyQt, this could be PySide, or maybe you decide to use a completely different GUI toolkit. 3. Negotiate a proprietary license with the copyright holder (IE buy the proprietary, royalty-free license from PyQt's authors. If you are in a position where you have violated copyright, failure to remedy it in a timely manner can cause you to be financially liable to the copyright holders of the code you are mis-using. Now, if you develop a program using PyQt and distribute it under the terms of the GPL, that does not mean you have to keep your code under the GPL. You can close your source at any time and use, say, PySide instead. But any code you already distributed under the GPL remains in the wild (supposing someone has a copy) under the GPL terms, even if newer versions of your software adopt a new license. -- http://mail.python.org/mailman/listinfo/python-list
Re: This mail never gets delivered. Any ideas why?
On 03/09/2013 02:25 PM, Νίκος Γκρ33κ wrote:
mail = form.getvalue('mail')
id what the user types in an html form and click submits. this can be
a non valid email of course i just check if there is a '@' in the
mail address.
But will the mail, gets delivered even if mail's value is invalid?
Who knows. You haven't specified how you are sending e-mail. Likely, if
an e-mail address is invalid, python still happily hands it off to your
designated mail server or local MTA (mail transfer agent--could be
sendmail). What happens there depends entirely on the policies of the
mail server or MTA you are using.
If python is trying to use sendmail, then probably the process would
just fail and return some sort of error code. But you will need to
check on the documentation of whatever e-mail library you are using in
Python.
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Re: This mail never gets delivered. Any ideas why?
Τη Κυριακή, 10 Μαρτίου 2013 7:07:25 π.μ. UTC+2, ο χρήστης Michael Torrie έγραψε:
On 03/09/2013 02:25 PM, Νίκος Γκρ33κ wrote:
mail = form.getvalue('mail')
id what the user types in an html form and click submits. this can be
a non valid email of course i just check if there is a '@' in the
mail address.
But will the mail, gets delivered even if mail's value is invalid?
Who knows. You haven't specified how you are sending e-mail. Likely, if
an e-mail address is invalid, python still happily hands it off to your
designated mail server or local MTA (mail transfer agent--could be
sendmail). What happens there depends entirely on the policies of the
mail server or MTA you are using.
If python is trying to use sendmail, then probably the process would
just fail and return some sort of error code. But you will need to
check on the documentation of whatever e-mail library you are using in
Python.
I'am using smtplib and i ahve contacted the hostgator administrators and they
say that Sendmail is ebaled for my reseller account.
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Re: This mail never gets delivered. Any ideas why?
On Sat, 09 Mar 2013 20:42:03 -0800, Νίκος Γκρ33κ wrote: Any ideas why the mail never gets delivered? What do the mail logs say? Can you send email using this mail server from Thunderbird, or does it fail there too? My wild guess is that the mail server is properly rejecting mail because you are trying to send to it without an account. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: This mail never gets delivered. Any ideas why?
Τη Κυριακή, 10 Μαρτίου 2013 7:56:45 π.μ. UTC+2, ο χρήστης Steven D'Aprano έγραψε: My wild guess is that the mail server is properly rejecting mail because you are trying to send to it without an account. Account 'support(-at-)hostgator.com' exists. It's the recipient mail address which is my personal address fot my web hosting business. In TB yes i can read email via SSL witohut any problem. -- http://mail.python.org/mailman/listinfo/python-list
[issue17388] Providing invalid value to
New submission from Chris Tandiono: Currently, random.sample(population, k) raises a ValueError if k is out of the range of [0, len(population)], inclusive. However, the message says Sample larger than population even when the real problem is that k 0. The attached patch fixes that. The problem exists in all versions of Python that have the random.sample function. I think I should be adding tests for this, but I don't know in what existing file, if any, this test should go into. -- components: Library (Lib) files: random_sample.patch keywords: patch messages: 183808 nosy: Chris.Tandiono priority: normal severity: normal status: open title: Providing invalid value to type: behavior versions: 3rd party, Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5 Added file: http://bugs.python.org/file29354/random_sample.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17388 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17388] Providing invalid value to random.sample can result in incorrect error message
Changes by Chris Tandiono chris.tandi...@gmail.com: -- title: Providing invalid value to - Providing invalid value to random.sample can result in incorrect error message ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17388 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15873] datetime cannot parse ISO 8601 dates and times
Anders Hovmöller added the comment: Éric Araujo: absolutely. Although I think my code can be improved (speed wise, elegance, etc) since I just wrote it quickly a weekend :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15873 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17385] Use deque instead of list the threading.Condition waiter queue
Antoine Pitrou added the comment: I don't think you need slicing if you rewrite the patch in another way, e.g.: for i in range(n): try: waiter = __waiters.popleft() except IndexError: break waiter.release() I think this is safe, since notify() must be called with the lock held: another thread shouldn't be able to mutate the waiters list in the meantime. As for notify_all(), it could be optimized to swap the internal list with an empty one: there's no need to pop the waiters one by one. -- nosy: +neologix ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17385 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17389] Optimize Event.wait()
New submission from Antoine Pitrou: It should be possible to optimize threading.Event.wait() to not acquire the condition when the event is already set. Patch attached. Without patch: $ ./python -m timeit -s import threading; e = threading.Event(); e.set() e.wait() 100 loops, best of 3: 0.466 usec per loop With patch: $ ./python -m timeit -s import threading; e = threading.Event(); e.set() e.wait() 1000 loops, best of 3: 0.19 usec per loop -- components: Library (Lib) files: event_wait.patch keywords: patch messages: 183811 nosy: neologix, pitrou, sbt priority: normal severity: normal stage: patch review status: open title: Optimize Event.wait() type: performance versions: Python 3.4 Added file: http://bugs.python.org/file29355/event_wait.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17389 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17340] Handle malformed cookie
karl added the comment: Yes the new RFC has been written by Adam Barth who wanted to describe things matching the reality of HTTP and servers/browsers issues. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17340 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17299] Test cPickle with real files
Aman Shah added the comment: I have updated the patch for test_cpickle.py . Also, I would like to help out in creating mixins for the 3 but, it would be helpful if you can explain it in a bit more detail. What is the problem in using the existing pickletester.py?? -- Added file: http://bugs.python.org/file29356/test_cpickle_patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17299 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10595] Adding a syslog.conf reader in syslog
Changes by Ankur Ankan ankuran...@gmail.com: -- nosy: +Ankur.Ankan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10595 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Antoine Pitrou added the comment: I don't understand why you must put the socket in non-blocking mode for sendfile(). Also I think the support code (_use_send() / _use_sendfile()) should be factored out somewhere. There could even be a socket.sendfile() method with the appropriate fallbacks? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15518] Provide test coverage for filecmp.dircmp.report methods.
Changes by Ankur Ankan ankuran...@gmail.com: -- nosy: +Ankur.Ankan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15518 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17375] Add docstrings to methods in the threading module
Eli Bendersky added the comment: Raymond - which patch is it? You didn't specify the contributor in the commit. What about the duplicate issue #12768 where someone also worked to supply a patch? Also, you've only committed this to 2.7; why? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17375 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16576] ctypes: structure with bitfields as argument
Roundup Robot added the comment: New changeset 0acd9408b6f1 by Eli Bendersky in branch '3.2': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/0acd9408b6f1 New changeset bfc159f8e4b4 by Eli Bendersky in branch '3.3': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/bfc159f8e4b4 New changeset 502624235c7b by Eli Bendersky in branch 'default': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/502624235c7b -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16576 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16575] ctypes: unions as arguments
Roundup Robot added the comment: New changeset 0acd9408b6f1 by Eli Bendersky in branch '3.2': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/0acd9408b6f1 New changeset bfc159f8e4b4 by Eli Bendersky in branch '3.3': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/bfc159f8e4b4 New changeset 502624235c7b by Eli Bendersky in branch 'default': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/502624235c7b -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16575 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16576] ctypes: structure with bitfields as argument
Roundup Robot added the comment: New changeset eece32440a52 by Eli Bendersky in branch '2.7': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/eece32440a52 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16576 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16575] ctypes: unions as arguments
Roundup Robot added the comment: New changeset eece32440a52 by Eli Bendersky in branch '2.7': Add warning in ctypes documentation for #16575 and #16576 http://hg.python.org/cpython/rev/eece32440a52 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16575 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11367] xml.etree.ElementTree.find(all): docs are wrong
Eli Bendersky added the comment: Henrik, this patch fails to apply to 3.2 applying issue11367_branch32.patch patching file Doc/library/xml.etree.elementtree.rst Hunk #1 FAILED at 411 1 out of 1 hunks FAILED -- saving rejects to file Doc/library/xml.etree.elementtree.rst.rej patching file Lib/xml/etree/ElementTree.py Hunk #1 FAILED at 704 Hunk #2 FAILED at 725 Hunk #3 FAILED at 750 3 out of 3 hunks FAILED -- saving rejects to file Lib/xml/etree/ElementTree.py.rej abort: patch failed to apply I suspect this may be because of line endings. Are you generating the patches on a Windows machine? All patches to Python should be strictly in Unix format (LF for line ending, not CR LF). Can you configure your hg client and / or editor to do this? I haven't touched Windows for some time but IIRC TortoiseHg does the right thing if your file is proper. In other words, perhaps it's the editor's fault. Your editor should not insert Windows line-endings into a Unix-y file (which Doc/library/xml.etree.elementtree.rst is). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11367 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17359] python modules.zip is not documented
Eli Bendersky added the comment: Marc-Andre, Can this issue be closed or are the docs lacking in some way? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17359 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17138] XPath error in xml.etree.ElementTree
Eli Bendersky added the comment:
Gutzwiller, the [position] syntax means the Nth child *of its parent*. Since
you placed the second h1 into p, it's the first child of its parent. So the
library's behavior is correct here. Note:
[e.text for e in xml.findall('.//h1[1]')]
['1', '2']
--
resolution: - invalid
stage: - committed/rejected
status: open - closed
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http://bugs.python.org/issue17138
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[issue15518] Provide test coverage for filecmp.dircmp.report methods.
Eli Bendersky added the comment: Chris Calloway, would you like to pursue this issue further? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15518 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16954] Add docstrings for ElementTree module
Eli Bendersky added the comment: Thanks David, the patch looks good. I will commit it with some slight modifications and touch-ups shortly. The issue of C extension docstrings vs. Python docstrings is an interesting one. It's a shame that help() shows empty strings, and it's a shame to copy-paste. What do other modules do? It may also be worth asking in python-dev or the docs mailing list and hear suggestions from other developers. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16954] Add docstrings for ElementTree module
Roundup Robot added the comment: New changeset f27d7c1eac4d by Eli Bendersky in branch 'default': Issue #16954: Add docstrings for ElementTree http://hg.python.org/cpython/rev/f27d7c1eac4d -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16954 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11367] xml.etree.ElementTree.find(all): docs are wrong
anatoly techtonik added the comment: You can use patch.py utility from http://python-patch.googlecode.com/svn-history/trunk/patch.py to apply patch that doesn't have this CRLF problem. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11367 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Giampaolo Rodola' added the comment: I don't understand why you must put the socket in non-blocking mode for sendfile(). I did that mainly because I'm using select() / poll() and it seems kind of natural to set the socket in non-blocking mode (proftpd does the same). I'm not sure whether it actually makes any difference though (on Linux it works either way, blocking or not). I'm removing the non-blocking mode in the new attached patch. We can take take a look at the buildbots later and see how they behave. Also I think the support code (_use_send() / _use_sendfile()) should be factored out somewhere. Agreed and turned them into methods. There could even be a socket.sendfile() method with the appropriate fallbacks? Perhaps. The only thing which is not clear is how to deal with blocking vs. non-blocking sockets. Also, Windows should also be covered and expose TransmitFile. It's probably better to discuss this elsewhere. -- Added file: http://bugs.python.org/file29357/ftplib-sendfile4.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Antoine Pitrou added the comment: I don't understand why you must put the socket in non-blocking mode for sendfile(). I did that mainly because I'm using select() / poll() and it seems kind of natural to set the socket in non-blocking mode (proftpd does the same). But why do you need to use select() / poll() ? Can't you just call sendfile() right from the start? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17370] PEP should note if it has been superseded
Barry A. Warsaw added the comment: On Mar 09, 2013, at 03:30 AM, Terry J. Reedy wrote: I think you are, in effect, asking for expansion of the 'PEP Header Preamble' section of PEP-0001. I have added some of the PEP editors listed in the PEP as nosy. I will let them decide if this should be discussed elsewhere. Looks like Benjamin just changed Replaced-By with Superseded-By in PEP 1 and Replaced with Superseded as a Status. He also updated a bunch of PEPs with the new headers, including 333. He probably should have discussed this with the other PEP editors beforehand, but in retrospect, it seems fine. I guess that means you're requesting a new header such as 'Related' which would contain a list of PEP numbers? Usually we just put those in the references (and it's perfectly fine to update a PEP after it's final with new references - that's why we have a version control system. :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17370 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Giampaolo Rodola' added the comment: Because otherwise sendfile() fails with EAGAIN many times before sending any actual data. select() / poll() make sure the while loop awakens only when the socket is ready to be written (as opposed to continuously catching EAGAIN and wait for sendfile() to succeed). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17343] Add a version of str.split which returns an iterator
Gregory P. Smith added the comment: It'd perhaps have been better if things like memoryview were never exposed to the user at all as a distinct type and became an internal implementation detail behind PyBytes and PyUnicode objects (they could hold a reference to something else or collapse that down to their own copy on their own terms, up to the particulars of the Python VM). Anyways, the above is getting off topic for this issue. I retract my memoryview suggestion; that belongs in its own issue. An iterating version of str.split is indeed hard to add today IFF we are against a str.itersplit() method name or against an optional keyword only argument that'd cause split(iterator=True)'s return type to potentially be different. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17343 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Antoine Pitrou added the comment: Because otherwise sendfile() fails with EAGAIN many times before sending any actual data. EAGAIN on a blocking fd? Is it documented somewhere? The Linux man page for sendfile() says: EAGAIN Nonblocking I/O has been selected using O_NONBLOCK and the write would block. FreeBSD apparently says something similar: [EAGAIN] The socket is marked for non-blocking I/O and not all data was sent due to the socket buffer being filled. If specified, the number of bytes successfully sent will be returned in *sbytes. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14146] IDLE: source line in editor doesn't highlight when debugging
Roger Serwy added the comment: I think it's a problem on Tk on Windows. The painting of the selection highlight goes away when a window loses focus. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14146 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Giampaolo Rodola' added the comment: I see. Well, what I'm experiencing right now if I remove the select() / poll() call is a sequence of EAGAIN errors alternated by successful sendfile() calls. Either the man page is wrong or I'm missing something. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13564] ftplib and sendfile()
Antoine Pitrou added the comment: I see. Well, what I'm experiencing right now if I remove the select() / poll() call is a sequence of EAGAIN errors alternated by successful sendfile() calls. Either the man page is wrong or I'm missing something. Weird. I guess it would be nice to dig a bit more :-) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13564 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17388] Providing invalid value to random.sample can result in incorrect error message
Changes by Ned Deily n...@acm.org: -- nosy: +mark.dickinson, rhettinger versions: -3rd party, Python 2.6, Python 3.1, Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17388 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17388] Providing invalid value to random.sample can result in incorrect error message
Raymond Hettinger added the comment: This seems like a silly criticism to me. A negative value will almost never be the cause of this exception. That said, I'll tweak the message at some point. -- assignee: - rhettinger priority: normal - low ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17388 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17384] test_logging failures on Windows
Ezio Melotti added the comment: Confirmed, thanks for fixing this! -- stage: needs patch - committed/rejected ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17384 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
