Debugging python in emacs isn't working.
Hi, Emacs 22.3, python 2.6.4 Put the following into my .emacs: (setq pdb-path 'c:\\python26\\lib\\pdb.py gud-pdb-command-name (symbol-name pdb-path)) (defadvice pdb (before gud-query-cmdline activate) Provide a better default command line when called interactively. (interactive (list (gud-query-cmdline pdb-path (file-name-nondirectory buffer-file-name) So when I'm in a python buffer (I've tried both python.el and python- mode.el) and do M-x pdb I get, say: c:\python26\lib\pdb.py rpytest.py hit ret and get an empty buffer that says Comint: no process. And the status line says: Spawning child process: invalid argument. I've run into spawning child process: invalid argument before but not being an emacs uber-geek I never solved it directly. Hope someone has an idea of what I'm doing wrong. -- http://mail.python.org/mailman/listinfo/python-list
Re: String prefix question
Alan Harris-Reid a...@baselinedata.co.uk writes: From what I can gather from the documentation the b prefix represents a bytes literal Yes. In Python 3 there are two types with similar-looking literal syntax: ‘str’ and ‘bytes’. The types are mutually incompatible (though they can be explicitly converted). URL:http://docs.python.org/3.1/library/stdtypes.html#typesseq URL:http://docs.python.org/3.1/reference/lexical_analysis.html#strings but can anyone explain (in simple english) what this means? It means the difference between “a sequence of bytes” and “a sequence of characters”. The two are not the same, have not ever been the same despite a long history in computing of handwaving the differences, and Python 3 finally makes them unambiguously distinct. A general solution wasn't even feasible for a long time, but now we have Unicode, a mature standard for uniformly representing all the world's writing systems in software. So Python 3 made ‘str’ the Unicode “string of characters” type, and the ‘'foo'’ literal syntax creates objects of this type. The Python 3.1 documentation has a Unicode HOWTO that you should read URL:http://docs.python.org/3.1/howto/unicode.html. -- \ “We must respect the other fellow's religion, but only in the | `\ sense and to the extent that we respect his theory that his | _o__) wife is beautiful and his children smart.” —Henry L. Mencken | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: pythonw.exe under Windows-7 (Won't run for one admin user)
Dennis Lee Bieber wrote: On Fri, 06 Nov 2009 21:19:44 GMT, SD_V897 sd_v...@nosuchmail.com declaimed the following in gmane.comp.python.general: AppPath=C:\Program Files\Utilities\Python Scripting v2.62\pythonw.exe That's an interesting path... Did the install path for Python (from either python.org or activestate) change that much from 2.5.x, or is that a custom install path (and is it the same path for the accounts it works in). Especially as there is no v2.62 to my knowledge... a 2.6.2, OTOH... Now... I did change the upper level directory for mine (E:\; my C: partition is rather packed, and I tend to install a lot of packages from my user account), but the installer named top level was \Python25\pythonw.exe I've added the folder directory to my PATH statement and also tried installing to the root but it doesn't make a difference. The 2.62 should be 2.64 my bad.. SD -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with OS X installation
Thanks all. That did it. -- http://mail.python.org/mailman/listinfo/python-list
Choosing GUI Module for Python
Hi all I just wanted to know which module is best for developing designing interface in python . i have come across some modules which are listed here . please tell your suggestions and comments to choose best one 1. PyGTK 2. PyQT 3. PySide 4. wxPython 5 . TKinter Also i need to know is there any IDE for developing these things . . . -- http://mail.python.org/mailman/listinfo/python-list
Re: Cancelling a python thread (revisited...)
Antoine Pitrou wrote: John Nagle nagle at animats.com writes: I'd argue against general thread cancellation. Inter-thread signals, though, have safety problems no worse than the first-thread only signals we have now. You're allowed to raise an exception in a signal handler, which is effectively thread cancellation. Can you give an example of such cancellation? In any case, this would be a side-effect of the current implementation, not officially supported behaviour. It's not only documented behavior, it's an example in the official documentation. See http://docs.python.org/library/signal.html#example where an exception is raised in a signal handler. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Choosing GUI Module for Python
On Nov 8, 10:49 pm, Antony anthonir...@gmail.com wrote: Hi all I just wanted to know which module is best for developing designing interface in python . i have come across some modules which are listed here . please tell your suggestions and comments to choose best one 1. PyGTK 2. PyQT 3. PySide 4. wxPython 5 . TKinter Also i need to know is there any IDE for developing these things . . . You may want to offer a little more info, like what exactly you are looking to do with such GUI. are your needs for a VW, Corvette, or Mercedes? etc, etc. All these kits have pros and cons, some better for this some for that, yadda yadda -- http://mail.python.org/mailman/listinfo/python-list
Re: Indentation problems
On Nov 8, 1:48 pm, Tim Chase python.l...@tim.thechases.com wrote: I am having problems with indentation some times. When I hit the enter key after if statements or while statemt there are times when the indentation is too much and other times too little. Check for omitted brackets, braces and parenthesis. If you editor uses an auto indent function like even IDLE does then this will be the culprit! -- http://mail.python.org/mailman/listinfo/python-list
Re: Choosing GUI Module for Python
On Nov 9, 11:49 am, r rt8...@gmail.com wrote: On Nov 8, 10:49 pm, Antony anthonir...@gmail.com wrote: Hi all I just wanted to know which module is best for developing designing interface in python . i have come across some modules which are listed here . please tell your suggestions and comments to choose best one 1. PyGTK 2. PyQT 3. PySide 4. wxPython 5 . TKinter Also i need to know is there any IDE for developing these things . . . You may want to offer a little more info, like what exactly you are looking to do with such GUI. are your needs for a VW, Corvette, or Mercedes? etc, etc. All these kits have pros and cons, some better for this some for that, yadda yadda I would like to know about that pros and cons only ... -- http://mail.python.org/mailman/listinfo/python-list
how to close not response win32 IE com interface
hello, these day im making some script that use win32 IE com interface. one of problem is , my internet line is very slow, so sometimes my IE.navigate(http://www.example.com;) not response timely. it looks hang and open status, not complete status. so my IE.navigate function is not correctly working. anyone can help me? in that case ,how to close or restart my script from start. thanks in advance Paul -- View this message in context: http://old.nabble.com/how-to-close-not-response-win32-IE-com-interface-tp26265055p26265055.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
Re: installing library on MAC OS X 10.5.8
Xbiton schrieb: Hi, I'm new to mac and I'm having a lot of problems installing library on mac ox x 10.5.8. I want to install PyXML and although the install procedure - just done like described on the web page of PyXML - That's a 5-years-old XML package. Don't use it. Your python2.5 already features element-tree, which is much nicer to use. Or is there a specific reason you need PyXML? Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Query about doing fortran-esque repeat formatting
Rob Briggs rdbriggs at mun.ca writes: Is there a way to do a repeat formatting command like in Fortran? Rather that doing this: print %s %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f % (parmName[i], tmp[i][1], tmp[i][2], tmp[i][4], tmp[i][6], tmp[i][7], tmp[i][8], tmp[i][9]) There certainly is. You can use python's string concatenation and repeat operators: print %s + %-5.3f * 7 % stuff Glenn -- http://mail.python.org/mailman/listinfo/python-list
Re: how to remove the same words in the paragraph
I think simple regex may come handy,
p=re.compile(r'(.+) .*\1')#note the space
s=p.search(python and i love python)
s.groups()
(' python',)
But that matches for only one double word.Someone else could light up here
to extract all the double words.Then they can be removed from the original
paragraph.
This has multiple problems:
p = re.compile(r'(.+) .*\1')
s = p.search(python one two one two python)
s.groups()
('python',)
s = p.search(python one two one two python one)
s.groups() # guess what happened to the 2nd one...
('python one',)
and even once you have the list of theoretical duplicates (by
changing the regexp to r'\b(\w+)\b.*?\1' perhaps), you still have
to worry about emitting the first instance but not subsequent
instances.
-tkc
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Re: username/password dialog prompt
On Nov 6, 4:40 pm, Cousin Stanley cousinstan...@gmail.com wrote: My Tkinter is very rusty but perhaps you could do it something like this : http://pastebin.com/m5e49da19 I forgot how to get rid of the empty root window that appears, sorry. root.withdraw() # should do it Thanks to you both - exactly what I was looking for. Much appreciated. -- Dan Winsor Soy un poco loco en el coco. -- http://mail.python.org/mailman/listinfo/python-list
Re: Cancelling a python thread (revisited...)
Le Sun, 08 Nov 2009 21:04:06 -0800, John Nagle a écrit : Antoine Pitrou wrote: John Nagle nagle at animats.com writes: I'd argue against general thread cancellation. Inter-thread signals, though, have safety problems no worse than the first-thread only signals we have now. You're allowed to raise an exception in a signal handler, which is effectively thread cancellation. Can you give an example of such cancellation? In any case, this would be a side-effect of the current implementation, not officially supported behaviour. It's not only documented behavior, it's an example in the official documentation. See http://docs.python.org/library/signal.html#example Well, the only supported behaviour is to send signals to the main thread. Besides, it doesn't cancel the thread, it just raises an exception in it, which can be caught and silenced. Just try the following: import signal, time def handler(signum, frame): print 'Signal handler called with signal', signum raise IOError # Set the signal handler and a 5-second alarm signal.signal(signal.SIGALRM, handler) signal.alarm(2) try: time.sleep(10) except IOError: print got IOError! -- http://mail.python.org/mailman/listinfo/python-list
Re: Query about doing fortran-esque repeat formatting
Glenn Hutchings wrote: Rob Briggs rdbriggs at mun.ca writes: Is there a way to do a repeat formatting command like in Fortran? Rather that doing this: print %s %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f % (parmName[i], tmp[i][1], tmp[i][2], tmp[i][4], tmp[i][6], tmp[i][7], tmp[i][8], tmp[i][9]) There certainly is. You can use python's string concatenation and repeat operators: print %s + %-5.3f * 7 % stuff Glenn data = tuple(parmName[i]) + tuple(tmp[i]) print %s + %-5.3f * len(tmp[i]) % data That should do the trick. JM -- http://mail.python.org/mailman/listinfo/python-list
OT: regular expression matching multiple occurrences of one group
How can I make a regular expression that will match every occurrence of a group and return each occurrence as a group match? For example, for a string -c-c-c-c-c, how can I make a regex which will return a group match for each occurrence of -c? -- http://mail.python.org/mailman/listinfo/python-list
Re: Choosing GUI Module for Python
On Nov 9, 2009, at 3:59 AM, Antony wrote: You may want to offer a little more info, like what exactly you are looking to do with such GUI. are your needs for a VW, Corvette, or Mercedes? etc, etc. All these kits have pros and cons, some better for this some for that, yadda yadda I would like to know about that pros and cons only ... What might be a pro for one use case could easily be a con for another. For example, Kit-X may be infinitely configurable to run on everything from 800x600 to 1680x1050 pixel monitors with full viewport control, full zoom, pan, etc. and requires that all those cases be handled with correct configuration. That's great if you're writing an application that requires that. But, if you're writing a Pref Pane for OS X, which will never be any bigger than the pref-pane window and will only run on OS X, that particular kit might be a huge waste of time. The pro of infinite flexibility becomes a huge con for the OS X Pref Pane use-case. S -- http://mail.python.org/mailman/listinfo/python-list
Re: sort values from dictionary of dictionaries python 2.4
J Wolfe wrote:
I would like to sort this dictionary by the values of the inner
dictionary ‘ob’ key.
Python's built-in dictionary is unsorted by design.
mydict =
{’WILW1′: {’fx’: ‘8.1′, ‘obtime’: ‘2009-11-07 06:45:00′, ‘ob’: ‘6.9′},
‘GRRW1′: {’fx’: ‘12.8′, ‘obtime’: ‘2009-11-07 04:15:00′, ‘ob’: ‘6.7′},
‘NASW1′: {’fx’: ‘6.8′, ‘obtime’: ‘2009-11-07 06:30:00′, ‘ob’: ‘7.1′}
}
In this case, this would become:
mysorteddic =
{’NASW1′: {’fx’: ‘6.8′, ‘obtime’: ‘2009-11-07 06:30:00′, ‘ob’: ‘7.1′},
‘WILW1′: {’fx’: ‘8.1′, ‘obtime’: ‘2009-11-07 06:45:00′, ‘ob’: ‘6.9′},
‘GRRW1′: {’fx’: ‘12.8′, ‘obtime’: ‘2009-11-07 04:15:00′, ‘ob’: ‘6.7′}
}
I have had no luck in trying to figure this out. I am restricted to
using python 2.4.3.
Any help would be appreciated!
You may be able to work around that limitation by putting the dict items
into a list and sort that:
for item in sorted(mydict.items(), key=lambda (k, v): float(v[ob]),
reverse=True):
... print item
...
('NASW1', {'fx': '6.8', 'obtime': '2009-11-07 06:30:00', 'ob': '7.1'})
('WILW1', {'fx': '8.1', 'obtime': '2009-11-07 06:45:00', 'ob': '6.9'})
('GRRW1', {'fx': '12.8', 'obtime': '2009-11-07 04:15:00', 'ob': '6.7'})
Peter
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CGI vs mod_python
Hi; I've been told by a server farm that they're having trouble getting my scripts to work because they're written with cgi calls as opposed to mod_python. Is there a basis for their complaint? These pages serve fine on another server. TIA, Victor -- http://mail.python.org/mailman/listinfo/python-list
Re: CGI vs mod_python
On Nov 9, 2009, at 9:32 AM, Victor Subervi wrote: Hi; I've been told by a server farm that they're having trouble getting my scripts to work because they're written with cgi calls as opposed to mod_python. Is there a basis for their complaint? These pages serve fine on another server. Does the server they're working fine on use CGI? Yes, they're different. S -- http://mail.python.org/mailman/listinfo/python-list
Re: Query about doing fortran-esque repeat formatting
Thanks to the chaps who answered, I knew there would be an efficient answer to this. regards, Rob On Mon, 2009-11-09 at 13:31 +0100, Jean-Michel Pichavant wrote: Glenn Hutchings wrote: Rob Briggs rdbriggs at mun.ca writes: Is there a way to do a repeat formatting command like in Fortran? Rather that doing this: print %s %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f %-5.3f % (parmName[i], tmp[i][1], tmp[i][2], tmp[i][4], tmp[i][6], tmp[i][7], tmp[i][8], tmp[i][9]) There certainly is. You can use python's string concatenation and repeat operators: print %s + %-5.3f * 7 % stuff Glenn data = tuple(parmName[i]) + tuple(tmp[i]) print %s + %-5.3f * len(tmp[i]) % data That should do the trick. JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Choosing GUI Module for Python
On 11/8/09 11:49 PM, Antony wrote: Hi all I just wanted to know which module is best for developing designing interface in python . i have come across some modules which are listed here . please tell your suggestions and comments to choose best one 1. PyGTK 2. PyQT 3. PySide 4. wxPython 5 . TKinter Also i need to know is there any IDE for developing these things . . . http://lmgtfy.com/?q=gui+toolkit+for+python -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
Re: CGI vs mod_python
Yes, obviously. But if CGI is enabled, it should work anyway, should it not? V On Mon, Nov 9, 2009 at 9:46 AM, sstein...@gmail.com sstein...@gmail.comwrote: On Nov 9, 2009, at 9:32 AM, Victor Subervi wrote: Hi; I've been told by a server farm that they're having trouble getting my scripts to work because they're written with cgi calls as opposed to mod_python. Is there a basis for their complaint? These pages serve fine on another server. Does the server they're working fine on use CGI? Yes, they're different. S -- http://mail.python.org/mailman/listinfo/python-list
Re: CGI vs mod_python
On Nov 9, 2009, at 10:18 AM, Victor Subervi wrote: Yes, obviously. But if CGI is enabled, it should work anyway, should it not? Depends on what CGI is enabled means. Usually, web servers are not set to just handle cgi scripts from anywhere, but only from specific file system locations. Otherwise, an an anonymous upload could be executed as CGI and wreak havoc. And it should work anyway, should it not is already answered by they're having trouble getting my scripts to work. S -- http://mail.python.org/mailman/listinfo/python-list
[PYTHON] How to set the range for x-axis
Hi Everyone, I have written a script in python to plot a graph. However, the range for the x-axis starts from 0.5 to 1.0. However, I would like to start from 0 to 1. Any pointer to this shall be appreciated. Thanks, Moses -- http://mail.python.org/mailman/listinfo/python-list
Re: [PYTHON] How to set the range for x-axis
On Mon, Nov 9, 2009 at 7:45 AM, Moses jam...@gmail.com wrote: I have written a script in python to plot a graph. However, the range for the x-axis starts from 0.5 to 1.0. However, I would like to start from 0 to 1. Any pointer to this shall be appreciated. Some /very/ basic information such as what plotting library you're using would be necessary to answer your question. What version of Python you're using would also be useful. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: regular expression matching multiple occurrences of one group
pinkisntwell schrieb: How can I make a regular expression that will match every occurrence of a group and return each occurrence as a group match? For example, for a string -c-c-c-c-c, how can I make a regex which will return a group match for each occurrence of -c? Why is this flagged OT? And in python, you can't do that. Groups are based upon the lexical structure of the regexp, and thus have a fixed number of groups. Either use repetitive searches over the input, or postprocess the combined group by e.g. splitting it. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: CGI vs mod_python
Uuuuh. Thanks! V On Mon, Nov 9, 2009 at 10:45 AM, sstein...@gmail.com sstein...@gmail.comwrote: On Nov 9, 2009, at 10:41 AM, Victor Subervi wrote: On Mon, Nov 9, 2009 at 10:29 AM, sstein...@gmail.com sstein...@gmail.comwrote: On Nov 9, 2009, at 10:18 AM, Victor Subervi wrote: Yes, obviously. But if CGI is enabled, it should work anyway, should it not? Depends on what CGI is enabled means. Usually, web servers are not set to just handle cgi scripts from anywhere, but only from specific file system locations. Otherwise, an an anonymous upload could be executed as CGI and wreak havoc. Of course, yes. And it should work anyway, should it not is already answered by they're having trouble getting my scripts to work. They're having _all_sorts_of_trouble_ getting my scripts to work, not just this issue. These scripts worked fine on another server. I don't understand what the problems are, and I'm trying to parameterize. Gotcha. Do you have access to and have you given them the old httpd.conf? That could certainly give them some clues about what's different. Also, there is (on apache 2.x+ anyway) a whole directory tree full of included files that get sucked in as the configuration is getting built so that whole tree would give them everything they would need (if they know how to work from it which they should if they're running a server farm). S -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: regular expression matching multiple occurrences of one group
On Nov 9, 1:53 pm, pinkisntwell pinkisntw...@gmail.com wrote:
How can I make a regular expression that will match every occurrence
of a group and return each occurrence as a group match? For example,
for a string -c-c-c-c-c, how can I make a regex which will return a
group match for each occurrence of -c?
As well as what Diez has said, unless you absolutely want regexp's,
and by the sounds of it I'm guessing you may be after something more
flexible: what about the pyparsing module [1]. It handles your
situation quite nicely.
import pyparsing
parser = pyparsing.ZeroOrMore('-c')
parser.parseString('-c-c-c-c-c-c')
(['-c', '-c', '-c', '-c', '-c', '-c'], {})
hth,
Jon.
[1] http://pyparsing.wikispaces.com/
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Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
Chapter 2 Basic Concepts is about 0.666 completed and 30 pages so far. It's now Python 3.x, and reworked with lots of graphical examples and more explanatory text, plus limited in scope to Basic Concepts (which I previously just had as a first ch 2 section -- but there's rather a lot of concepts!). I think it's wise to invite comments even when it's not 100% completed. First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, not to mention doing worse things. :-) Second, because comments in general can improve the text. Contents: 2.1 Super-basic concept: why programming is not DWIM. 1 2.2 Reported errors.4 2.2.1 Case-sensitity. 4 2.2.2 Syntax / compilation errors.4 2.2.3 Runtime errors / crashes. 5 2.3 A programming exploration tool: turtle graphics.6 2.4 Naming things. 8 2.4.1 Naming actions: routines. 8 2.4.2 Naming data part I: variables. 11 2.4.3 Naming data part II: routine arguments. 13 2.5 Controlling the flow of execution. 14 2.5.1 Repeating actions automatically: loops. 14 2.5.2 Basic comparisions boolean values.16 2.5.3 Interlude I: a function graph program / about types.17 2.5.4 Automated action choices. 21 2.5.5 Value-producing (function-like) routines. 23 2.5.6 Interlude II: a graph with zeroes marked / about program structure. 26 2.5.7 Dynamically nested actions: recursive routines. 28 2.6 Objects. [Not started on this] 31 2.7 Collections.[Not started on this] 31 In Google Docs (both chapters available here): url: http://preview.tinyurl.com/ProgrammingBookP3 Formats: PDF Cheers, - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: [PYTHON] How to set the range for x-axis
Hi Chris, I am using python 2.6 and am using scipy and pylab. See the code below. Cheers. from scipy import * from pylab import * x1 = [0.5,0.6,0.7,0.8,0.9,1.0] x2 = [0,1,2,3,4,5,6,7,8,9,10] plot(x1,y01,linewidth=5.0) show() Thanks. . On Mon, Nov 9, 2009 at 5:49 PM, Chris Rebert c...@rebertia.com wrote: On Mon, Nov 9, 2009 at 7:45 AM, Moses jam...@gmail.com wrote: I have written a script in python to plot a graph. However, the range for the x-axis starts from 0.5 to 1.0. However, I would like to start from 0 to 1. Any pointer to this shall be appreciated. Some /very/ basic information such as what plotting library you're using would be necessary to answer your question. What version of Python you're using would also be useful. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: [PYTHON] How to set the range for x-axis
Hi Chris, The code is from scipy import * from pylab import * x = [0.5,0.6,0.7,0.8,0.9,1.0] y = [2,6,8,10,10,10] plot(x,y,linewidth=5.0) show() and not from scipy import * from pylab import * x1 = [0.5,0.6,0.7,0.8,0.9,1.0] x2 = [0,1,2,3,4,5,6,7,8,9,10] plot(x1,y01,linewidth=5.0) show() Moses On Mon, Nov 9, 2009 at 6:43 PM, Moses jam...@gmail.com wrote: Hi Chris, I am using python 2.6 and am using scipy and pylab. See the code below. Cheers. from scipy import * from pylab import * x1 = [0.5,0.6,0.7,0.8,0.9,1.0] x2 = [0,1,2,3,4,5,6,7,8,9,10] plot(x1,y01,linewidth=5.0) show() Thanks. . On Mon, Nov 9, 2009 at 5:49 PM, Chris Rebert c...@rebertia.com wrote: On Mon, Nov 9, 2009 at 7:45 AM, Moses jam...@gmail.com wrote: I have written a script in python to plot a graph. However, the range for the x-axis starts from 0.5 to 1.0. However, I would like to start from 0 to 1. Any pointer to this shall be appreciated. Some /very/ basic information such as what plotting library you're using would be necessary to answer your question. What version of Python you're using would also be useful. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: String prefix question
Alan Harris-Reid wrote: In the Python.org 3.1 documentation (section 20.4.6), there is a simple “Hello World” WSGI application which includes the following method... def hello_world_app(environ, start_response): status = b'200 OK' # HTTP Status headers = [(b'Content-type', b'text/plain; charset=utf-8')] # HTTP Headers start_response(status, headers) # The returned object is going to be printed return [bHello World] Question - Can anyone tell me why the 'b' prefix is present before each string? The method seems to work equally well with and without the prefix. From what I can gather from the documentation the b prefix represents a bytes literal, but can anyone explain (in simple english) what this means? Many thanks, Alan Another link: http://www.stereoplex.com/two-voices/python-unicode-and-unicodedecodeerror -- http://mail.python.org/mailman/listinfo/python-list
Re: Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
On Nov 9, 4:10 pm, Alf P. Steinbach al...@start.no wrote: Chapter 2 Basic Concepts is about 0.666 completed and 30 pages so far. It's now Python 3.x, and reworked with lots of graphical examples and more explanatory text, plus limited in scope to Basic Concepts (which I previously just had as a first ch 2 section -- but there's rather a lot of concepts!). I think it's wise to invite comments even when it's not 100% completed. First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, not to mention doing worse things. :-) Second, because comments in general can improve the text. Contents: 2.1 Super-basic concept: why programming is not DWIM. 1 2.2 Reported errors. 4 2.2.1 Case-sensitity. 4 2.2.2 Syntax / compilation errors. 4 2.2.3 Runtime errors / crashes. 5 2.3 A programming exploration tool: turtle graphics. 6 2.4 Naming things. 8 2.4.1 Naming actions: routines. 8 2.4.2 Naming data part I: variables. 11 2.4.3 Naming data part II: routine arguments. 13 2.5 Controlling the flow of execution. 14 2.5.1 Repeating actions automatically: loops. 14 2.5.2 Basic comparisions boolean values. 16 2.5.3 Interlude I: a function graph program / about types. 17 2.5.4 Automated action choices. 21 2.5.5 Value-producing (function-like) routines. 23 2.5.6 Interlude II: a graph with zeroes marked / about program structure. 26 2.5.7 Dynamically nested actions: recursive routines. 28 2.6 Objects. [Not started on this] 31 2.7 Collections. [Not started on this] 31 In Google Docs (both chapters available here): url:http://preview.tinyurl.com/ProgrammingBookP3 Formats: PDF Cheers, - Alf Well, you may not like it, but it is perfectly acceptable and indeed promoted to use CONSTANT_VAR_NAMES. You're almost discouraging the use of a well understood and oft-used idiom. I they're a lot of them, you generally have a settings module, that just lists all of the 'constants' (.h files effectively). Technically line_length is a variable...: No - it's a name that binds to an object that happens to be an integer. You've participated in discussions re: this. Similarly 'number_of_apples = number_of_apples + 1' is not an assignment ;) It's nit-picky and I realise you're trying to keep it simple, but as it's meant for new programmers to the Python language, then introduce them to Python's way of variables, they'll thank you for it later... (or run screaming, or start another thread here...) I've never seen/heard != described as different from; what's wrong with not equal to? And why no mention of 'not' (should be mentioned with booleans surely?). That's as far as I've got; might get around to reading more later... Cool tree at the end :) Cheers, Jon -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: regular expression matching multiple occurrences of one group
On Mon, 9 Nov 2009 05:53:00 -0800 (PST), pinkisntwell pinkisntw...@gmail.com
wrote:
How can I make a regular expression that will match every occurrence
of a group and return each occurrence as a group match? For example,
for a string -c-c-c-c-c, how can I make a regex which will return a
group match for each occurrence of -c?
Is this a ludicrous question, or is it meant for the python group?
use strict;
use warnings;
my @matches = -c-c-c-c-c =~ /(-c)/g;
print \...@matches\n;
@matches = ();
-c-a-c-c-c =~ /(?:(-c)(?{push @matches, $^N})|.)+/x;
print @matches\n;
-sln
--
http://mail.python.org/mailman/listinfo/python-list
Re: OT: regular expression matching multiple occurrences of one group
pinkisntwell pinkisntw...@gmail.com wrote: How can I make a regular expression that will match every occurrence of a group and return each occurrence as a group match? For example, for a string -c-c-c-c-c, how can I make a regex which will return a group match for each occurrence of -c? Where is the problem? The most straight-forward, simplest approach works just fine: use strict; use warnings; my $s = '-c-c-c-c-c'; my @matched = $s=~/-c/g; print Found . @matched . occurences of '-c':\n; print join \n, @matched; Or did you forget to use the g modifier? jue -- http://mail.python.org/mailman/listinfo/python-list
Re: Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
* Jon Clements: On Nov 9, 4:10 pm, Alf P. Steinbach al...@start.no wrote: Chapter 2 Basic Concepts is about 0.666 completed and 30 pages so far. It's now Python 3.x, and reworked with lots of graphical examples and more explanatory text, plus limited in scope to Basic Concepts (which I previously just had as a first ch 2 section -- but there's rather a lot of concepts!). I think it's wise to invite comments even when it's not 100% completed. First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, not to mention doing worse things. :-) Second, because comments in general can improve the text. Contents: 2.1 Super-basic concept: why programming is not DWIM. 1 2.2 Reported errors.4 2.2.1 Case-sensitity. 4 2.2.2 Syntax / compilation errors.4 2.2.3 Runtime errors / crashes. 5 2.3 A programming exploration tool: turtle graphics.6 2.4 Naming things. 8 2.4.1 Naming actions: routines. 8 2.4.2 Naming data part I: variables. 11 2.4.3 Naming data part II: routine arguments. 13 2.5 Controlling the flow of execution. 14 2.5.1 Repeating actions automatically: loops. 14 2.5.2 Basic comparisions boolean values.16 2.5.3 Interlude I: a function graph program / about types.17 2.5.4 Automated action choices. 21 2.5.5 Value-producing (function-like) routines. 23 2.5.6 Interlude II: a graph with zeroes marked / about program structure. 26 2.5.7 Dynamically nested actions: recursive routines. 28 2.6 Objects. [Not started on this] 31 2.7 Collections.[Not started on this] 31 In Google Docs (both chapters available here): url:http://preview.tinyurl.com/ProgrammingBookP3 Formats: PDF Cheers, - Alf Well, you may not like it, but it is perfectly acceptable and indeed promoted to use CONSTANT_VAR_NAMES. You're almost discouraging the use of a well understood and oft-used idiom. I they're a lot of them, you generally have a settings module, that just lists all of the 'constants' (.h files effectively). Yeah, I thought of that angle so I emphasized 'programs'. As it happens about half or more of the variables in the examples are constants. All uppercase convention for that would be ugly to me. :-) Technically line_length is a variable...: No - it's a name that binds to an object that happens to be an integer. You've participated in discussions re: this. Similarly 'number_of_apples = number_of_apples + 1' is not an assignment ;) Ah, you're kidding. Probably. Anyways, that's the terminology employed by the language reference, and even if it wasn't I'd use it because this is primarily introduction to programming in general, where Python just happens to be the vehicle; thus, language independent terminology preferred (e.g., I use routine instead of C/Python function). It's nit-picky and I realise you're trying to keep it simple, but as it's meant for new programmers to the Python language, then introduce them to Python's way of variables, they'll thank you for it later... (or run screaming, or start another thread here...) Yeah, good point, thanks! But it will have to wait till I get down into details... ;-) I've never seen/heard != described as different from; what's wrong with not equal to? Thanks! And why no mention of 'not' (should be mentioned with booleans surely?). Again, I'll discuss that later. It's just too much to bring up. Most of my work with this has been to pare down to essentials and *remove* stuff I'd written. That's as far as I've got; might get around to reading more later... Cool tree at the end :) Thanks! Cheers, - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
On Nov 9, 2009, at 11:54 AM, Jon Clements wrote: On Nov 9, 4:10 pm, Alf P. Steinbach al...@start.no wrote: First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, Welp, there goes my last excuse. I'm off to write my book: Heart Surgery at Home *** How to Save Thousands and Get Results Just Like in Hospital Chapter 1: Sanitation, Schmanitation: How Clean is Clean Enough? Chapter 2: Surgical Tools vs. Ginsu: How Sharp is Sharp Enough? Chapter 3: Gray's Anatomy and Sharpies: Laying out The Surgery Chapter 4: Before You Start: Charging Your Cell Phone, and Testing 911 Chapter 5: Anesthesia: Jack Daniels or Smirnoffs; How Much is Enough? Chapter 6: The Insanity Defense: Laying the Groundwork with 6 Month Plan That's as far as I've gotten... Amazon best seller list, here I come! S -- http://mail.python.org/mailman/listinfo/python-list
Re: Re: String prefix question
Gerard Flanagan wrote: div class=moz-text-flowedAlan Harris-Reid wrote: In the Python.org 3.1 documentation (section 20.4.6), there is a simple “Hello World” WSGI application which includes the following method... def hello_world_app(environ, start_response): status ='200 OK' # HTTP Status headers =(b'Content-type', b'text/plain; charset=utf-8')] # HTTP Headers start_response(status, headers) # The returned object is going to be printed return [bHello World] Question - Can anyone tell me why the 'b' prefix is present before each string? The method seems to work equally well with and without the prefix. From what I can gather from the documentation the b prefix represents a bytes literal, but can anyone explain (in simple english) what this means? Many thanks, Alan Another link: http://www.stereoplex.com/two-voices/python-unicode-and-unicodedecodeerror /div Gerard - thanks for the link - explains it well. Many thanks, Alan -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
Did you give up on me? V On Sun, Nov 8, 2009 at 12:40 PM, Victor Subervi victorsube...@gmail.comwrote: [r...@13gems angrynates.com]# chcon -R -h unconfined_u:object_r:httpd_sys_content_t global_solutions/* Then I surfed to http://209.216.9.56/global_solutions/index.py [r...@13gems angrynates.com]# tail /var/log/messages Nov 8 04:26:02 13gems syslogd 1.4.1: restart. [r...@13gems angrynates.com]# tail /var/log/httpd/error_log [Sun Nov 08 05:35:10 2009] [notice] Digest: generating secret for digest authentication ... [Sun Nov 08 05:35:10 2009] [notice] Digest: done [Sun Nov 08 05:35:10 2009] [notice] mod_python: Creating 4 session mutexes based on 10 max processes and 0 max threads. [Sun Nov 08 05:35:10 2009] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] File does not exist: /var/www/html/angrynates.com/favicon.ico [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] (2)No such file or directory: exec of '/var/www/html/ angrynates.com/global_solutions/index.py' failed, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] Premature end of script headers: index.py, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] File does not exist: /var/www/html/angrynates.com/favicon.ico [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] (2)No such file or directory: exec of '/var/www/html/ angrynates.com/global_solutions/index.py' failed, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] Premature end of script headers: index.py, referer: http://209.216.9.56/global_solutions/ TIA, V On Sun, Nov 8, 2009 at 12:28 PM, Rami Chowdhury rami.chowdh...@gmail.comwrote: On Sunday 08 November 2009 05:44:31 Victor Subervi wrote: [r...@13gems angrynates.com]# chcon -u unconfined_u -r object_r -t httpd_sys_content_t global_solutions chcon: can't apply partial context to unlabeled file global_solutions Please advise. Try 'chcon -R -h unconfined_u:object_r:httpd_sys_content_t global_solutions/*', which should specify the whole context at once and avoid that error, as well as apply it recursively to all files and subdirectories. Also, to narrow down the error, can you let us have the output of: tail /var/log/messages tail /var/log/httpd/error_log HTH, Rami Rami Chowdhury As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one. -- Godwin's Law 408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD) -- http://mail.python.org/mailman/listinfo/python-list
Re: Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
* sstein...@gmail.com: On Nov 9, 2009, at 11:54 AM, Jon Clements wrote: On Nov 9, 4:10 pm, Alf P. Steinbach al...@start.no wrote: First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, Welp, there goes my last excuse. I'm off to write my book: Heart Surgery at Home *** How to Save Thousands and Get Results Just Like in Hospital Chapter 1: Sanitation, Schmanitation: How Clean is Clean Enough? Chapter 2: Surgical Tools vs. Ginsu: How Sharp is Sharp Enough? Chapter 3: Gray's Anatomy and Sharpies: Laying out The Surgery Chapter 4: Before You Start: Charging Your Cell Phone, and Testing 911 Chapter 5: Anesthesia: Jack Daniels or Smirnoffs; How Much is Enough? Chapter 6: The Insanity Defense: Laying the Groundwork with 6 Month Plan That's as far as I've gotten... Amazon best seller list, here I come! S It helps if you have some experience with surgery on other parts of the body. Cheers hth., - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, Nov 9, 2009 at 12:44 PM, Victor Subervi victorsube...@gmail.com wrote: Did you give up on me? V Please don't top-post. -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, 09 Nov 2009 09:44:24 -0800, Victor Subervi victorsube...@gmail.com wrote: Did you give up on me? V On Sun, Nov 8, 2009 at 12:40 PM, Victor Subervi victorsube...@gmail.comwrote: [r...@13gems angrynates.com]# chcon -R -h unconfined_u:object_r:httpd_sys_content_t global_solutions/* Then I surfed to http://209.216.9.56/global_solutions/index.py [r...@13gems angrynates.com]# tail /var/log/messages Nov 8 04:26:02 13gems syslogd 1.4.1: restart. [r...@13gems angrynates.com]# tail /var/log/httpd/error_log [Sun Nov 08 05:35:10 2009] [notice] Digest: generating secret for digest authentication ... [Sun Nov 08 05:35:10 2009] [notice] Digest: done [Sun Nov 08 05:35:10 2009] [notice] mod_python: Creating 4 session mutexes based on 10 max processes and 0 max threads. [Sun Nov 08 05:35:10 2009] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] File does not exist: /var/www/html/angrynates.com/favicon.ico [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] (2)No such file or directory: exec of '/var/www/html/ angrynates.com/global_solutions/index.py' failed, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 07:29:40 2009] [error] [client 66.248.168.98] Premature end of script headers: index.py, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] File does not exist: /var/www/html/angrynates.com/favicon.ico [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] (2)No such file or directory: exec of '/var/www/html/ angrynates.com/global_solutions/index.py' failed, referer: http://209.216.9.56/global_solutions/ [Sun Nov 08 09:38:44 2009] [error] [client 66.248.168.98] Premature end of script headers: index.py, referer: http://209.216.9.56/global_solutions/ TIA, V On Sun, Nov 8, 2009 at 12:28 PM, Rami Chowdhury rami.chowdh...@gmail.comwrote: On Sunday 08 November 2009 05:44:31 Victor Subervi wrote: [r...@13gems angrynates.com]# chcon -u unconfined_u -r object_r -t httpd_sys_content_t global_solutions chcon: can't apply partial context to unlabeled file global_solutions Please advise. Try 'chcon -R -h unconfined_u:object_r:httpd_sys_content_t global_solutions/*', which should specify the whole context at once and avoid that error, as well as apply it recursively to all files and subdirectories. Also, to narrow down the error, can you let us have the output of: tail /var/log/messages tail /var/log/httpd/error_log OK, after all this I've forgotten what your .py file looked like -- can you post that please? -- Rami Chowdhury Never attribute to malice that which can be attributed to stupidity -- Hanlon's Razor 408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tax Calculator--Tkinter
Someone Something wrote: from Tkinter import *; Try to avoid this. Better import Tkinter. And don't forget to import Tkconstants too! rate=Frame(root) income=Frame(root) result=Frame(root) Why do you use three frames? You only need one. And you can make your class TaxCalc inherit from Tkinter.Frame ... The thing is, that even if I put 12 in the result text field, get returns an empty string. How can I fix this? I haven't found the reason for that, but this should work. I also added MRABs version of printResult(). import Tkinter, Tkconstants class TaxCalc(Tkinter.Frame): def __init__(self, root): Tkinter.Frame.__init__(self, root) Tkinter.Button(self, text='Enter tax rate', command=self.getRate).pack() self.rate=Tkinter.Entry(self) self.rate.pack() Tkinter.Button(self, text='Enter income', command=self.getIncome).pack() self.income=Tkinter.Entry(self) self.income.pack() Tkinter.Button(self, text='Get result', command=self.printResult).pack() self.result=Tkinter.Entry(self) self.result.pack() self.pack() def getRate(self): print srate: , self.rate.get() def getIncome(self): print sincome: , self.income.get() def printResult(self): try: rate = float(self.rate.get()) income = float(self.income.get()) result = ((100.0 - rate) / 100.0) * income self.result.insert(Tkconstants.END, str(result)) except ValueError: print Clear everything and start again. print Don't fool around with me. root=Tkinter.Tk() MyCalc=TaxCalc(root) root.mainloop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
Of course. Let me start with some updates to httpd.conf, which didn't help
anyway:
VirtualHost *:80
ServerAdmin m...@creative.vi
DocumentRoot /var/www/html/angrynates.com
ServerName angrynates.com
Options +ExecCGI -IncludesNoExec
Directory /var/www/html/angrynates.com/global_solutions
Options +ExecCGI
AllowOverride All
AllowOverride FileInfo
#AddHandler mod_python .py
#PythonHandler mod_python.publisher
#PythonDebug On
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
/Directory
/VirtualHost
Here's index.py:
#!/usr/bin/python
import string
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from template import template
ourFile = string.split(__file__, /)
page = ourFile[len(ourFile) - 1][:-3]
form = cgi.FieldStorage()
w = form.getfirst('w', '1024')
template(page, w)
Here's template.py:
#!/usr/bin/python
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
p = 'template'
def template(page, w):
wn = int(w)/1024
print Content-Type: text/html
print
print '''
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Frameset//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd;
head xmlns=http://www.w3.org/1999/xhtml;
style type='text/css'
.text { font-family: Arial, Helvetica, sans-serif; font-size: 16px;
text-decoration: none; text-align: justify}
/style
titleGlobal Solutions Group/title
meta http-equiv=distribution content=Global /
meta http-equiv=robots content=index all, follow all /
meta name=author content=This web site developed by beno. You may reach
him at his web site [beno.vi], or by dialing 340-773-0687 and asking for
room 102. /
script language=JavaScript type=text/JavaScript
!--
function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; ia.length;
i++)
if (a[i].indexOf(#)!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;aia.length(x=a[i])x.oSrc;i++)
x.src=x.oSrc;
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf(?))0parent.frames.length)
{
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])d.all) x=d.all[n]; for (i=0;!xid.forms.length;i++)
x=d.forms[i][n];
for(i=0;!xd.layersid.layers.length;i++)
x=MM_findObj(n,d.layers[i].document);
if(!x d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array;
for(i=0;i(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc)
x.oSrc=x.src; x.src=a[i+2];}
}
//--
/script
/head
body
onload=MM_preloadImages('images/office-supplies-on.jpg','images/catalog-on.jpg','images/customer-template-on.jpg','images/forms-on.jpg','images/about-on.jpg','images/contact-on.jpg')
script language=JavaScript1.2 src=quickmenu/sample_data.js/script
script language=JavaScript1.2 src=quickmenu/dqm_script.js/script'''
print table width='%s' bgcolor='#ff' cellpadding='0'
cellspacing='0'!-- % (str(wn*1008))
print '--tr!--'
print '--td!--'
print '--img src=images/top.jpg width=%s height=%s alt= /!--'
% (str(wn*1008), str(wn*101))
print '--/td!--'
print '--/trtr!--'
print '--td!--'
print '--table align=left width=%s cellpadding=0
cellspacing=0!--' % (str(wn*1008))
print '--tr!--'
print --tdimg src='images/left.jpg' alt='' width='%s' height='%s'
//td!-- % (str(wn*219), str(wn*21))
print '--tda href=index.py
onMouseOver=MM_swapImage(Home,,images/home-on.jpg,1)
onMouseOut=MM_swapImgRestore()img src=images/home-off.jpg name=Home
id=Home alt=Home width=%s height=%s border=0 //a/td!--' %
(str(wn*80), str(wn*21))
print '--tda href=Office_Supplies.py
onMouseOver=MM_swapImage(office-supplies,,images/office-supplies-on.jpg,1)
onMouseOut=MM_swapImgRestore()img src=images/office-supplies-off.jpg
name=office-supplies id=office-supplies alt=office supplies width=%s
height=%s border=0 //a/td!--' % (str(wn*137), str(wn*21))
print '--tda href=Catalog.py
onMouseOver=MM_swapImage(catalog,,images/catalog-on.jpg,1)
onMouseOut=MM_swapImgRestore()img src=images/catalog-off.jpg
name=catalog id=catalog alt=catalog width=%s height=%s border=0
//a/td!--' % (str(wn*86), str(wn*21))
print '--tda href=Customer_Templates.py
onMouseOver=MM_swapImage(customer-template,,images/customer-template-on.jpg,1)
onMouseOut=MM_swapImgRestore()img src=images/customer-template-off.jpg
name=customer-template id=customer-template alt=customer template
width=%s height=%s border=0 //a/td!--' % (str(wn*145),
str(wn*21))
print '--tda
Re: Choosing GUI Module for Python
On Nov 9, 3:59 am, Antony anthonir...@gmail.com wrote: I would like to know about that pros and cons only ... I'll reiterate what i have said and others have said. WE NEED MORE INFO TO PROPERLY GUIDE YOU!!! Survey: What GUI is right for you? 1. What is your level of GUI programming? (0 1 2 3 4 5) 2. Will you be using this GUI for your own apps or distributing the apps? 3. What is the primary OS that this app will be used on (or any)? 4. What type of app (graphics(2D/3D), texteditor, hello world)? 5. Are themes/customizable look and feel important? *. You mentioned IDE's. That of course will narrow your choice pool substantially. Tkinter: +Is included in Python as a built-in module! +very easy to learn! +adequate docs! -lacks professional appearance -lacks many important widgets http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ wxPython: +larger richer widget set than tk! +better look and feel than tk! +opengl canvas built-in! -not as easy to learn as tk -docs are lacking at best (i really wish this were better!) -not built-in to Python (rightly so, too big!) i won't comment on the others. If you have absolutely no experience try out Tkinter just to a feel for GUI in a hand holding environment. If you are not happy with Tkinter's simplicity then move on to a full featured GUI kit if you need the more advanced stuff. I would say try them all! I would also suggest you learn to code GUI's without an IDE. I think the experience is more rewarding. You should know every bit of code you create personally! -- http://mail.python.org/mailman/listinfo/python-list
Re: Req. comments on first version ch 2 progr. intro (using Python 3.x in Windows)
On Nov 9, 5:22 pm, Alf P. Steinbach al...@start.no wrote: * Jon Clements: On Nov 9, 4:10 pm, Alf P. Steinbach al...@start.no wrote: Chapter 2 Basic Concepts is about 0.666 completed and 30 pages so far. It's now Python 3.x, and reworked with lots of graphical examples and more explanatory text, plus limited in scope to Basic Concepts (which I previously just had as a first ch 2 section -- but there's rather a lot of concepts!). I think it's wise to invite comments even when it's not 100% completed. First, because as opposed to ch 1 there is quite a bit of code here, and since I'm a Python newbie I may be using non-idiomatic constructs, not to mention doing worse things. :-) Second, because comments in general can improve the text. Contents: 2.1 Super-basic concept: why programming is not DWIM. 1 2.2 Reported errors. 4 2.2.1 Case-sensitity. 4 2.2.2 Syntax / compilation errors. 4 2.2.3 Runtime errors / crashes. 5 2.3 A programming exploration tool: turtle graphics. 6 2.4 Naming things. 8 2.4.1 Naming actions: routines. 8 2.4.2 Naming data part I: variables. 11 2.4.3 Naming data part II: routine arguments. 13 2.5 Controlling the flow of execution. 14 2.5.1 Repeating actions automatically: loops. 14 2.5.2 Basic comparisions boolean values. 16 2.5.3 Interlude I: a function graph program / about types. 17 2.5.4 Automated action choices. 21 2.5.5 Value-producing (function-like) routines. 23 2.5.6 Interlude II: a graph with zeroes marked / about program structure. 26 2.5.7 Dynamically nested actions: recursive routines. 28 2.6 Objects. [Not started on this] 31 2.7 Collections. [Not started on this] 31 In Google Docs (both chapters available here): url:http://preview.tinyurl.com/ProgrammingBookP3 Formats: PDF Cheers, - Alf Well, you may not like it, but it is perfectly acceptable and indeed promoted to use CONSTANT_VAR_NAMES. You're almost discouraging the use of a well understood and oft-used idiom. I they're a lot of them, you generally have a settings module, that just lists all of the 'constants' (.h files effectively). Yeah, I thought of that angle so I emphasized 'programs'. As it happens about half or more of the variables in the examples are constants. All uppercase convention for that would be ugly to me. :-) Okies, maybe introducing the fact that lots of 'programs' often have constants, which are quite often settings or whatever and they would use the uppercase notation (and if numerous, in a separate module). Also maybe you can introduce the fundamental idea of a 'namespace', maybe something like: class const: pi = 3.14 name = 'Alf' language = 'Python' or whatever, then reference const.var ? I'm not 100% sure I'm keen on this idea, but it's an option you can consider at least. Introduces a couple of bits that may be discussed later, but I'd be a little scared that people would start thinking 'const.' was something magical. Technically line_length is a variable...: No - it's a name that binds to an object that happens to be an integer. You've participated in discussions re: this. Similarly 'number_of_apples = number_of_apples + 1' is not an assignment ;) Ah, you're kidding. Probably. Anyways, that's the terminology employed by the language reference, and even if it wasn't I'd use it because this is primarily introduction to programming in general, where Python just happens to be the vehicle; thus, language independent terminology preferred (e.g., I use routine instead of C/Python function). It's nit-picky and I realise you're trying to keep it simple, but as it's meant for new programmers to the Python language, then introduce them to Python's way of variables, they'll thank you for it later... (or run screaming, or start another thread here...) Yeah, good point, thanks! But it will have to wait till I get down into details... ;-) Fair enough. It would be nice though to cover stuff like: a = [1,2,3] b = a - b is not a *copy* of a - b is not a *reference* to a - b just happens to be another name for the list object. And stuff about mutable/immutable: it would certainly help with a lot of gotcha's. I've never seen/heard != described as different from; what's wrong with not equal to? Thanks! And why no mention of 'not' (should be mentioned with booleans surely?). Again, I'll discuss that later. It's just too much to bring up. Most of my work with this has been to pare down to essentials and *remove* stuff I'd written. Well, should you re-write != as not equal to, it wouldn't hurt to mention a little later that not False is True and vice versa... That's as far as I've got; might get around to reading more later... Cool tree at the end :) Thanks! Cheers, - Alf Cheers, Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, 09 Nov 2009 10:36:31 -0800, Victor Subervi
victorsube...@gmail.com wrote:
Of course. Let me start with some updates to httpd.conf, which didn't
help
anyway:
VirtualHost *:80
ServerAdmin m...@creative.vi
DocumentRoot /var/www/html/angrynates.com
ServerName angrynates.com
Options +ExecCGI -IncludesNoExec
Directory /var/www/html/angrynates.com/global_solutions
Options +ExecCGI
AllowOverride All
AllowOverride FileInfo
#AddHandler mod_python .py
#PythonHandler mod_python.publisher
#PythonDebug On
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
/Directory
/VirtualHost
Here's index.py:
#!/usr/bin/python
import string
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from template import template
ourFile = string.split(__file__, /)
page = ourFile[len(ourFile) - 1][:-3]
form = cgi.FieldStorage()
w = form.getfirst('w', '1024')
template(page, w)
Can you try running index.py from the command-line, and let me know if
that works?
Also, as you've already been asked - please start your replies *below* the
text you are replying to. Putting your replies above the last email, or
top-posting makes reading long email threads with lots of text
distracting and frustrating.
--
Rami Chowdhury
Never attribute to malice that which can be attributed to stupidity --
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)
--
http://mail.python.org/mailman/listinfo/python-list
questions regarding stack size use for multi-threaded python programs
Hi, background: we are using python 2.4.3 on CentOS 5.3 with many threads - and our shell's default stack size limit is set to 10240KB (i.e. ~10MB). we noticed that python's Threading module appears to create threads with this value as their stack size (we ran a sample program that creates 10 threads and measured its virtual memory size, then reduced the stack size limit of the shell to 5120KB - and saw that the program's virtual memory size was reduced by ~50MBs). the problem: our program uses numerous threads, and thus the virtual memory size gets to be very large. we would like to reduce the size of the stack to reduce this size. we were looking for information about recommendation for the stack size to use, but found none. questions: 1. is there some rule-of-thumb for the recommended stack size for python programs of various sorts? 2. is there a way for us, at runtime (from inside the code or outside the process), to find how much of a thread's stack we are using (in KB or some other size units)? 3. when we define local objects - do the objects themselves get allocated on the stack - or are they allocated on the heap and only references to them are kept on the stack? 4. would the size of the stacks (which are probably not really allocated by the linux virtual memory sub-system, unless used) have a noticeable performance effect on a python program? same question regarding the use of a large number of threads? thanks, Eyal -- http://mail.python.org/mailman/listinfo/python-list
Re: Re: String prefix question
Benjamin Kaplan wrote:
On Sun, Nov 8, 2009 at 9:38 PM, Alan Harris-Reid
a...@baselinedata.co.uk wrote:
In the Python.org 3.1 documentation (section 20.4.6), there is a simple
Hello World WSGI application which includes the following method...
def hello_world_app(environ, start_response):
status ='200 OK' # HTTP Status
headers =(b'Content-type', b'text/plain; charset=utf-8')] # HTTP Headers
start_response(status, headers)
# The returned object is going to be printed
return [bHello World]
Question - Can anyone tell me why the 'b' prefix is present before each
string? The method seems to work equally well with and without the prefix.
From what I can gather from the documentation the b prefix represents a
bytes literal, but can anyone explain (in simple english) what this means?
Many thanks,
Alan
The rather long version:
read http://www.joelonsoftware.com/articles/Unicode.html
A somewhat shorter summary, along with how Python deals with this:
Once upon a time, someone decided to allocate 1 byte for each
character. Since everything the Americans who made the computers
needed fit into 7 bits, this was alright. And they called this the
American Standard Code for Information Interchange (ASCII). When
computers came along, device manufacturers realized that they had 128
characters that didn't mean anything, so they all made their own
characters to show for the upper 128. And when they started selling
computers internationally, they used the upper 128 to store the
characters they needed for the local language. This had several
problems.
1) Files made by on one computer in one country wouldn't display right
in a computer made by a different manufacturer or for a different
country
2) The 256 characters were enough for most Western languages, but
Chinese and Japanese need a whole lot more.
To solve this problem, Unicode was created. Rather than thinking of
each character as a distinct set of bits, it just assigns a number to
each one (a code point). The bottom 128 characters are the original
ASCII set, and everything else you could think of was added on top of
that - other alphabets, mathematical symbols, music notes, cuneiform,
dominos, mah jong tiles, and more. Unicode is harder to implement than
a simple byte array, but it means strings are universal- every program
will interpret them exactly the same. Unicode strings in python are
the default ('') in Python 3.x and created in 2.x by putting a u in
front of the string declaration (u'')
Unicode, however, is a concept, and concepts can't be mapped to bits
that can be sent through the network or stored on the hard drive. So
instead we deal with strings internally as Unicode and then give them
an encoding when we send them back out. Some encodings, such as UTF-8,
can have multiple bytes per character and, as such, can deal with the
full range of Unicode characters. Other times, programs still expect
the old 8-bit encodings like ISO-8859-1 or the Windows Ansi code
pages. In Python, to declare that the string is a literal set of bytes
and the program should not try and interpret it, you use b'' in Python
3.x, or just declare it normally in Python 2.x ('').
--
What happens in your program:
When you print a Unicode string, Python has to decide what encoding to
use. If you're printing to a terminal, Python looks for the terminal's
encoding and uses that. In the event that it doesn't know what
encoding to use, Python defaults to ASCII because that's compatible
with almost everything. Since the string you're sending to the web
page only contains ASCII characters, the automatic conversion works
fine if you don't specify the b''. Since the resulting page uses UTF-8
(which you declare in the header), which is compatible with ASCII, the
output looks fine. If you try sending a string that has non-ASCII
characters, the program might throw a UnicodeEncodeError because it
doesn't know what bytes to use for those characters. It may be able to
guess, but since I haven't used WSGI directly before, I can't say for
sure.
Thanks Benjamin - great 'history' lesson - explains it well.
Regards,
Alan
--
http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, Nov 9, 2009 at 1:53 PM, Rami Chowdhury rami.chowdh...@gmail.comwrote:
On Mon, 09 Nov 2009 10:36:31 -0800, Victor Subervi
victorsube...@gmail.com wrote:
Of course. Let me start with some updates to httpd.conf, which didn't help
anyway:
VirtualHost *:80
ServerAdmin m...@creative.vi
DocumentRoot /var/www/html/angrynates.com
ServerName angrynates.com
Options +ExecCGI -IncludesNoExec
Directory /var/www/html/angrynates.com/global_solutions
Options +ExecCGI
AllowOverride All
AllowOverride FileInfo
#AddHandler mod_python .py
#PythonHandler mod_python.publisher
#PythonDebug On
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
/Directory
/VirtualHost
Here's index.py:
#!/usr/bin/python
import string
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from template import template
ourFile = string.split(__file__, /)
page = ourFile[len(ourFile) - 1][:-3]
form = cgi.FieldStorage()
w = form.getfirst('w', '1024')
template(page, w)
Can you try running index.py from the command-line, and let me know if that
works?
It runs fine. So I created a test file of the same, chmod and tried it on my
browser. Rendered. So I deleted index.py and recreated it from the command
line, chmod. Rendered! Apparently, somehow in the translation from uploading
it via ftp to moving the files to a new dir, something got screwed up in the
permissions that I can't see! Any idea what the heck that could possibly
be??
TIA,
V
--
http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, 09 Nov 2009 11:24:33 -0800, Victor Subervi
victorsube...@gmail.com wrote:
On Mon, Nov 9, 2009 at 1:53 PM, Rami Chowdhury
rami.chowdh...@gmail.comwrote:
On Mon, 09 Nov 2009 10:36:31 -0800, Victor Subervi
victorsube...@gmail.com wrote:
Of course. Let me start with some updates to httpd.conf, which didn't
help
anyway:
VirtualHost *:80
ServerAdmin m...@creative.vi
DocumentRoot /var/www/html/angrynates.com
ServerName angrynates.com
Options +ExecCGI -IncludesNoExec
Directory /var/www/html/angrynates.com/global_solutions
Options +ExecCGI
AllowOverride All
AllowOverride FileInfo
#AddHandler mod_python .py
#PythonHandler mod_python.publisher
#PythonDebug On
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
/Directory
/VirtualHost
Here's index.py:
#!/usr/bin/python
import string
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from template import template
ourFile = string.split(__file__, /)
page = ourFile[len(ourFile) - 1][:-3]
form = cgi.FieldStorage()
w = form.getfirst('w', '1024')
template(page, w)
Can you try running index.py from the command-line, and let me know if
that
works?
It runs fine. So I created a test file of the same, chmod and tried it
on my
browser. Rendered. So I deleted index.py and recreated it from the
command
line, chmod. Rendered! Apparently, somehow in the translation from
uploading
it via ftp to moving the files to a new dir, something got screwed up in
the
permissions that I can't see! Any idea what the heck that could possibly
be??
TIA,
V
What platform did you upload from? Something as seemingly insignificant as
Windows line-endings can mess up file execution...
--
Rami Chowdhury
Never attribute to malice that which can be attributed to stupidity --
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)
--
http://mail.python.org/mailman/listinfo/python-list
Re: Choosing GUI Module for Python
Having tried most of the options out there, personaly I've settled on two. I use Tkinter for ver simple GUIs such as single dialog boxes or results displays. The advantage of it being built-in to Python outweighs it's limitations. For anything more complex, I go for PyQT every time. QTDesigner is a full drag-and-drop GUI builder that rivals Visual Studio, and PyQT comes with a script to convert QTDesigner XML files into Python code, which you then subclass in your own script and attach your own code to the GUI widgets. There's a longer learning curve than Tkinter, but it's very much worth it for access to QTs mature and rich framework, with excellent professional-class documentation. Sorry, but wxWidgets which I have used doesn't come anywhere close. The main objection to using PyQT untill now was that for commercial development you needed to buy a license (it was free for GPL projects). That's rapidly becoming a non-issue as the core QT framework is now LGPL and Nokia have a project underway to produce PyQT compatible LGPL python bindings under the PySide project. Simon Hibbs -- http://mail.python.org/mailman/listinfo/python-list
Re: [PYTHON] How to set the range for x-axis
On Mon, Nov 9, 2009 at 11:46 AM, Moses jam...@gmail.com wrote: Hi Chris, The code is from scipy import * from pylab import * x = [0.5,0.6,0.7,0.8,0.9,1.0] y = [2,6,8,10,10,10] plot(x,y,linewidth=5.0) show() and not from scipy import * from pylab import * x1 = [0.5,0.6,0.7,0.8,0.9,1.0] x2 = [0,1,2,3,4,5,6,7,8,9,10] plot(x1,y01,linewidth=5.0) show() Don't top-post use: axis([xmin,xmax,ymin,ymax]) See the documentation for details -- http://mail.python.org/mailman/listinfo/python-list
Re: [PYTHON] How to set the range for x-axis
On 2009-11-09 10:43 AM, Moses wrote: Hi Chris, I am using python 2.6 and am using scipy and pylab. See the code below. You will want to ask matplotlib questions on the matplotlib mailing list: https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: Serious Privileges Problem: Please Help
On Mon, Nov 9, 2009 at 2:30 PM, Victor Subervi victorsube...@gmail.comwrote:
On Mon, Nov 9, 2009 at 2:27 PM, Rami Chowdhury
rami.chowdh...@gmail.comwrote:
On Mon, 09 Nov 2009 11:24:33 -0800, Victor Subervi
victorsube...@gmail.com wrote:
On Mon, Nov 9, 2009 at 1:53 PM, Rami Chowdhury rami.chowdh...@gmail.com
wrote:
On Mon, 09 Nov 2009 10:36:31 -0800, Victor Subervi
victorsube...@gmail.com wrote:
Of course. Let me start with some updates to httpd.conf, which didn't
help
anyway:
VirtualHost *:80
ServerAdmin m...@creative.vi
DocumentRoot /var/www/html/angrynates.com
ServerName angrynates.com
Options +ExecCGI -IncludesNoExec
Directory /var/www/html/angrynates.com/global_solutions
Options +ExecCGI
AllowOverride All
AllowOverride FileInfo
#AddHandler mod_python .py
#PythonHandler mod_python.publisher
#PythonDebug On
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
AddHandler cgi-script .cgi .py
Options Includes Indexes SymLinksIfOwnerMatch ExecCGI
IfModule mod_security.c
SecFilterEngine Off
/IfModule
IfModule mod_security2.c
SecRuleEngine Off
/IfModule
/Directory
/VirtualHost
Here's index.py:
#!/usr/bin/python
import string
import cgitb; cgitb.enable()
import cgi
import sys,os
sys.path.append(os.getcwd())
from template import template
ourFile = string.split(__file__, /)
page = ourFile[len(ourFile) - 1][:-3]
form = cgi.FieldStorage()
w = form.getfirst('w', '1024')
template(page, w)
Can you try running index.py from the command-line, and let me know if
that
works?
It runs fine. So I created a test file of the same, chmod and tried it on
my
browser. Rendered. So I deleted index.py and recreated it from the
command
line, chmod. Rendered! Apparently, somehow in the translation from
uploading
it via ftp to moving the files to a new dir, something got screwed up in
the
permissions that I can't see! Any idea what the heck that could possibly
be??
TIA,
V
What platform did you upload from? Something as seemingly insignificant as
Windows line-endings can mess up file execution...
OS is Windoze XL. Have we caught the thief? How can I upload from this box
and not have this problem, or undo it at the server? You know, of course, I
don't see this line-ending from the command prompt when I vi it.
TIA,
V
Hold everything. Apparently line-endings got mangled. What I don't
understand is why I didn't see them when I opened the file to edit, and why
they didn't copy and paste when I did that. But dos2unix cleaned up a couple
of files so I presume it will clean up the rest. However, I tried one file,
that reads exactly the same as index.py, and when I surfed to it got a 500
error. Here's what the log said:
[Mon Nov 09 12:30:27 2009] [notice] mod_python: (Re)importing module
'mptest'
[Mon Nov 09 12:30:27 2009] [error] [client 98.189.137.242] PythonHandler
mptest: Traceback (most recent call last):, referer:
http://www.angrynates.com/global_solutions/
[Mon Nov 09 12:30:27 2009] [error] [client 98.189.137.242] PythonHandler
mptest: File /usr/lib64/python2.4/site-packages/mod_python/apache.py,
line 287, in HandlerDispatch\nlog=debug), referer:
http://www.angrynates.com/global_solutions/
[Mon Nov 09 12:30:27 2009] [error] [client 98.189.137.242] PythonHandler
mptest: File /usr/lib64/python2.4/site-packages/mod_python/apache.py,
line 461, in import_module\nf, p, d = imp.find_module(parts[i], path),
referer: http://www.angrynates.com/global_solutions/
[Mon Nov 09 12:30:27 2009] [error] [client 98.189.137.242] PythonHandler
mptest: ImportError: No module named mptest, referer:
http://www.angrynates.com/global_solutions/
Huh? Got no mptest anywhere. Not even using mod_python. Why doesn't it
refer to a specific file in the folder? Any ideas on this one?
TIA,
V
--
Rami Chowdhury
Never attribute to malice that which can be attributed to stupidity --
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to set the range for x-axis
On Nov 9, 8:45 pm, Robert Kern robert.k...@gmail.com wrote: On 2009-11-09 10:43 AM, Moses wrote: Hi Chris, I am using python 2.6 and am using scipy and pylab. See the code below. You will want to ask matplotlib questions on the matplotlib mailing list: https://lists.sourceforge.net/lists/listinfo/matplotlib-users -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco import matplotlib.pyplot as plt plt.xlim(0., 1.) -- http://mail.python.org/mailman/listinfo/python-list
Re: IDLE python shell freezes after running show() of matplotlib
On Oct 28, 11:09 pm, Chris Colbert sccolb...@gmail.com wrote: This is a threading issue that is very common when using gui toolkits with the interactive interpreter. You're better off just using ipython, which already has builtin support for matplotlib when you start it via ipython -pylab On Wed, Oct 28, 2009 at 7:41 PM, OKB (not okblacke) brennospamb...@nobrenspambarn.net wrote: Forrest Sheng Bao wrote: I am having a weird problem on IDLE. After I plot something using show () of matplotlib, the python shell prompt in IDLE just freezes that I cannot enter anything and there is no new prompt show up. I tried ctrl - C and it didn't work. I have to restart IDLE to use it again. My system is Ubuntu Linux 9.04. I used apt-get to install IDLE. I believe this is the intended behavior. Look in matplotlib documentation on the difference between interactive and non-interactive modes. -- --OKB (not okblacke) Brendan Barnwell Do not follow where the path may lead. Go, instead, where there is no path, and leave a trail. --author unknown -- http://mail.python.org/mailman/listinfo/python-list Same problem for me using IDLE 1.2.4, python 2.5.4, and matplotlib 0.99.1.1. Windows XP 32bit. Turning on interactive mode solved the problem with IDLE freezing, however the plot window still comes up empty and frozen. Using iPython now with no problems so far. Hopefully the problem with IDLE gets fixed. -- http://mail.python.org/mailman/listinfo/python-list
Re: Can't Find Module
On Sat, 07 Nov 2009 16:59:29 -, Victor Subervi victorsube...@gmail.com wrote: ImportError: No module named template [snip] I can import this just fine from the python command prompt. So, what gives? Is template.py in your current directory when you run the script from the command line? -- Rhodri James *-* Wildebeest Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
NEWB problem with urllib2
I just installed PyDev into Eclipse using the 'update' method and did the standard installation. I allowed it to Auto Configure itself and ran a Hello World module to make sure I was in the ballpark. I got an starting module up and have run Hello World but now am stuck on getting urlopen to import from urllib2 for the following example. from urllib2 import *# doesn't give me an error ur = urlopen(http://www.daniweb.com/forums/thread161312.html;) # gives me Undefined Variable: urlopen so I tried just import urllib2# Eclipse gives Unresolved Import Is urllib2 not on my path? Isn't urllib2 in the standard installation and shouldn't that automatically be on my path? If not, how can I get it on the path? ThankS!! -- http://mail.python.org/mailman/listinfo/python-list
Re: PiCloud Beta Release
On Thu, Nov 5, 2009 at 3:19 PM, Jacob Shaw shawjac...@gmail.com wrote: On Nov 1, 5:13 pm, Ken Elkabany k...@elkabany.com wrote: Hello, PiCloud has just released a Python library, cloud, which allows you to easily offload the execution of a function to a cluster of servers running on Amazon Web Services. As a beta product, we are currently free to all users who sign up with beta code PYTHONLIST. To register, go tohttp://www.picloud.com Full service description: PiCloud is a cloud-computing platform that integrates into the Python Programming Language. It enables you to leverage the compute power of Amazon Web Services without having to manage, maintain, or configure virtual servers. PiCloud integrates seamlessly into your existing code base through a custom Python library, cloud. To offload the execution of a function to the cloud, all you must do is pass your desired function into the cloud library. PiCloud will then run the function on its high-performance and automatically-scaling cluster. We quickly scale our server capacity, both up and down, to meet your computational needs, and only charge you for the resources you actually consume. Getting on the cloud has never been this easy! PiCloud improves the full cycle of software development and deployment. Functions that are run on PiCloud have their resource usage monitored, performance analyzed, and errors traced; we further aggregate all your functions to give you a bird's eye view of your service. Through these introspective capabilities, PiCloud enables you to develop faster, easier, and smarter. Common use cases for our platform: * Crawling the web * Manipulating images and videos * Generating charts and graphs * Statistical/Mathematical analysis of data sets * Real-time data processing Cheers, Ken Elkabany PiCloud, Inc. Wow, amazing service. I used PiCloud for some scraping work, and my script ran about 10x as fast. Some questions though: 1) I have another project which uses a custom python extension written in C++. Is there a way to use it on PiCloud? 2) I noticed you guys only support python 2.5 and 2.6. Will there be 3.1 support eventually? -- http://mail.python.org/mailman/listinfo/python-list Thanks for the compliments. 1) PiCloud will not automatically transfer libraries that require python C++ extensions. However, in your control panel, you can upload a tarball or synchronize an svn repository that contains your extension's code and we'll automatically compile/install it on our systems. 2) We are currently working on support for python 3.x (we've had requests from a fair number of users), and plan to release a compatible client library in a couple of weeks. Ken -- http://mail.python.org/mailman/listinfo/python-list
Socket programming with NetCom serial-to-ethernet module
Hi, This is my first Python-list post; I hope it's going to the right place. Here's my problem: I've read many tutorials on socket programming, but I can't seem to piece them together for my particular case. I have 3 serial ports, each of which individually connects to a port on a NetCom box, which converts them to TCP/IP ports (see e.g. http://www.serialgear.com/4--Port-Serial-TCP-IP-NETCOM-411.html). But I'll just focus on communicating with 1 serial port right now (assume that I have a 1-port NetCom box). So, the flow pattern goes like this -- ascii string from my Python program via the ethernet card to the NetCom box, which feeds the serial port; this serial port is the input/output to a board that controls a motor. So, I can send an ascii string like MI100\n, which tells that motor to move 100 steps. Currently, I can accomplish this using sockets. But if I instead want to request something from the motor, like it's current position, how do I return this information back to my Python program and still keep the socket alive and listening for say another position request? FYI, the NetCom box works on DHCP. So, I could use 'arp' or another method to actually find it's IP address, and I can connect to it using say port 2000. At this point, it looks as if I would setup a server socket for the NetCom box, and then create a client socket for the motor controller board to talk to the NetCom box (and e.g. give the current position of the motor, upon my request). But the hard part seems to be how to retrieve that information from the controller board, once it responds. For instance, if I were to just use pySerial, I open up a connection to the serial port, then serial.send(ascii) sends the request, and serial.readline() reads the response. I need to know how to implement this basic functionality with sockets, where the sockets remain alive and listening after each request/response, just as pySerial does. Any advice, sockets or not, is helpful and appreciated, and I can elaborate further on the problem, if requested. (Again, I hope this was not a misuse of the list in some way; I apologize, if so). Many thanks. -Ryan -- http://mail.python.org/mailman/listinfo/python-list
Re: Indentation problems
I'm going to make a whole bunch of wild guesses here, since you don't give us a lot to go on. Wild Guess #1: you're using IDLE. On Sun, 08 Nov 2009 19:01:37 -, Ray Holt mrhol...@sbcglobal.net wrote: I am having problems with indentation some times. When I hit the enter key after if statements or while statemt there are times when the indentation is too much Wild Guess #2: you've forgotten to close a bracket of some sort. and other times too little. Wild Guess #3: you've forgotten the colon on the end of the line When I try to manually make sure the indentation is correct and try to print, I ge the error message of invalid syntax or incorrect indentation. Ah. Wild Guess 1a: you're using IDLE in interactive mode. In that case, bear in mind Wild Guesses 2 and 3, but they aren't the whole story. In interactive mode, IDLE executes the code that you type Right Now This Instant And No Messing. When you type a compound statement like if or while, that presents a bit of a problem since the statement isn't really finished until you've typed in all the statements that belong to that if or while. Knowing this, IDLE puts off executing it, and helpfully adds the indentation that it knows you'll need. If you fiddle with that extra space and delete too much of it (easily done here), IDLE will tick you off for getting your indentation wrong. If you hit Return without typing anything else, IDLE will do exactly the same thing since it knows Python requires you to have at least one statement inside the if. Once you've typed that one statement, you can carry on typing more to your hearts content; at this point, IDLE treats a blank line as meaning I'm done. At this point it goes away and executes what you've typed Right Now This Instant And No Messing, and may end up complaining about something you got wrong three lines ago. Can someone help me. Also when I open the edit window instead of the shell the programs tend not to run. Help! Ray Well, no. Unlike the interactive window, typing into the edit window doesn't cause anything to be executed Right Now Etc Etc. It doesn't even cause anything to be executed Sometime Soon Honest Guv'nor. It just saves up what you've done so that it can be run later, assuming you remember to save it to a file. Unlike the interactive window, you can go back and change what you've written earlier to correct a mistake, and re-run the entire script rather than type it in again line by line. To actually run your program you have two alternatives. Either you can use the Run Module entry in the Run menu (F5 on my version: it may be called something slightly different in a slightly different menu with a slightly different shortcut key depending on your operating system and which version of IDLE you're running), or you can pull up a console (command line, terminal, xterm, whatever your OS calls it) and invoke Python on your file directly. If that last bit didn't make any sense to you, don't worry, just leave that particular adventure in computing for another day. -- Rhodri James *-* Wildebeest Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: is None or == None ?
On Sun, 08 Nov 2009 19:45:31 -, Terry Reedy tjre...@udel.edu wrote: I believe the use of tagged pointers has been considered and so far rejected by the CPython developers. And no one else that I know of has developed a fork for that. It would seem more feasible with 64 bit pointers where there seem to be spare bits. But CPython will have to support 32 bit machines for several years. I've seen that mistake made twice (IBM 370 architecture (probably 360 too, I'm too young to have used it) and ARM2/ARM3). I'd rather not see it a third time, thank you. -- Rhodri James *-* Wildebeest Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Is it possible to get the Physical memory address of a variable in python?
Hello all, Say I have a python variable: a = hello Is it possible for me to get the physical address of that variable (i.e. where it is in RAM)? I know that id(a) will give me it's memory address, but the address given does not seem to correlate with the physical memory. Is this even possible? Thank you! Ognjen -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to get the Physical memory address of a variable in python?
On Mon, Nov 9, 2009 at 7:47 PM, Ognjen Bezanov ogn...@mailshack.com wrote: Hello all, Say I have a python variable: a = hello Is it possible for me to get the physical address of that variable (i.e. where it is in RAM)? I know that id(a) will give me it's memory address, but the address given does not seem to correlate with the physical memory. Is this even possible? Thank you! Ognjen When you use Python, program in Python and not C. What do you need the memory location of a variable for? Python, like Java and .NET is a higher level language. You're not supposed to worry about things like the physical location in memory. There's probably some ugly hack using ctypes, or just writing the code in C but I don't know enough about Python's C API to know what it is. FWIW, even the id(x) == address of x is only an implementation detail of CPython. Other Python implementations don't use that scheme. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: NEWB problem with urllib2
On Mon, Nov 9, 2009 at 6:29 PM, Penn powderd...@gmail.com wrote: I just installed PyDev into Eclipse using the 'update' method and did the standard installation. I allowed it to Auto Configure itself and ran a Hello World module to make sure I was in the ballpark. I got an starting module up and have run Hello World but now am stuck on getting urlopen to import from urllib2 for the following example. from urllib2 import * # doesn't give me an error ur = urlopen(http://www.daniweb.com/forums/thread161312.html;) # gives me Undefined Variable: urlopen so I tried just import urllib2 # Eclipse gives Unresolved Import Is urllib2 not on my path? Isn't urllib2 in the standard installation and shouldn't that automatically be on my path? If not, how can I get it on the path? ThankS!! This sounds more like a PyDev and/or Eclipse problem than an urllib2 problem. :) One thing you can check: open the raw python interpreter outside of Eclipse and try importing urllib2 there. You might also try the interpreter interface within Eclipse (if it provides one.) HTH -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to get the Physical memory address of a variable in python?
Ognjen Bezanov wrote: Hello all, Say I have a python variable: a = hello Is it possible for me to get the physical address of that variable (i.e. where it is in RAM)? I know that id(a) will give me it's memory address, but the address given does not seem to correlate with the physical memory. Is this even possible? Python doesn't have variables as such. The variable's name is just a key in a dict and the variable's value is the corresponding value for that key (or, to be exact, a reference to the value). A particular value can be referred to by any number of 'variables'. -- http://mail.python.org/mailman/listinfo/python-list
Re: on Namespaces
On Sun, 08 Nov 2009 21:20:23 -, webtourist webtour...@gmail.com wrote: New bie Question: in Zen of Python - what exactly does the last one mean ? - Namespaces are one honking great idea -- let's do more of those! I mean why the emphasis ? Is it like saying put modules into packages in other programming paradigm s ? Like all things zen, 'meaning' as applied to this koan is a shifting concept best considered after deep meditiation on... oh, who am I kidding. If you keep names in separate namespaces, you are less likely to screw up by forgetting that you meant something else by that name 30 lines above. It's less about put modules in packages and more about put code in modules. Corollary: what happens after from somewhere import * is all your own fault. -- Rhodri James *-* Wildebeest Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: NEWB problem with urllib2
Thanks Simon! You are right.. I also believe it is something with Eclipse. I've been working since... the module below runs.. but Eclipse is still showing an error when I reference urlopen with a little red X... saying it is an undefined variable in the IDE.. but not giving me an runtime errors. #URL LIBRARY from urllib2 import * def openfilereadaline(a): f = open(a) print f for line in f: print line.rstrip() f.close() def openWebSite(a): ur = urlopen(a) #open url contents = ur.readlines()#readlines from url file fo = open(test.txt, w)#open test.txt for line in contents: print writing %s to a file %(line,) fo.write(line)#write lines from url file to text file fo.close()#close text file if __name__ == '__main__': openWebSite(http://www.daniweb.com/forums/thread161312.html;) print Hello World -- http://mail.python.org/mailman/listinfo/python-list
Re: Debugging python in emacs isn't working.
On Nov 8, 6:36 pm, menomnon p...@well.com wrote: Hi, Emacs 22.3, python 2.6.4 Put the following into my .emacs: (setq pdb-path 'c:\\python26\\lib\\pdb.py gud-pdb-command-name (symbol-name pdb-path)) (defadvice pdb (before gud-query-cmdline activate) Provide a better default command line when called interactively. (interactive (list (gud-query-cmdline pdb-path (file-name-nondirectory buffer-file-name) So when I'm in a python buffer (I've tried both python.el and python- mode.el) and do M-x pdb I get, say: c:\python26\lib\pdb.py rpytest.py hit ret and get an empty buffer that says Comint: no process. And the status line says: Spawning child process: invalid argument. I've run into spawning child process: invalid argument before but not being an emacs uber-geek I never solved it directly. Hope someone has an idea of what I'm doing wrong. python -i. It's the -i part that's important. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to get the Physical memory address of a variable in python?
Benjamin Kaplan wrote: On Mon, Nov 9, 2009 at 7:47 PM, Ognjen Bezanov ogn...@mailshack.com wrote: Hello all, Say I have a python variable: a = hello Is it possible for me to get the physical address of that variable (i.e. where it is in RAM)? I know that id(a) will give me it's memory address, but the address given does not seem to correlate with the physical memory. Is this even possible? Thank you! Ognjen When you use Python, program in Python and not C. What do you need the memory location of a variable for? Python, like Java and .NET is a higher level language. You're not supposed to worry about things like the physical location in memory. There's probably some ugly hack using ctypes, or just writing the code in C but I don't know enough about Python's C API to know what it is. FWIW, even the id(x) == address of x is only an implementation detail of CPython. Other Python implementations don't use that scheme. Following is for the CPython implementation. As Benjamin says, each implementation can do different things, as long as the documented semantics are preserved. The variable aaa is not at any particular location, and will quite likely move when you define a new variable bbb or ccc in the same scope. aaa is just a dictionary entry after all, in some scope. (Although it may be optimized, for locals, and for slots) aaa is bound to a particular object, and that object won't move. That object has an id() value, and I believe that id value is the address. And when you bind aaa to a different object, there'll be a different id() and address. But unless you're writing a C extension, the actual address is kind of irrelevant, isn't it? DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to get the Physical memory address of a variable in python?
On Nov 9, 4:47 pm, Ognjen Bezanov ogn...@mailshack.com wrote: Hello all, Say I have a python variable: a = hello Is it possible for me to get the physical address of that variable (i.e. where it is in RAM)? I know that id(a) will give me it's memory address, but the address given does not seem to correlate with the physical memory. Is this even possible? I'm going to guess that A. You don't really want physical address but logical address (i.e., the address where you might access the memory with a C pointer), and B. You want the address not of the object itself, but of the data within (that is, you'd want the pointer you receive to point to the ASCII string hello) Python's way to handle cases like this is called buffer protocol, but it only operates at the C-extension level. There is a set of functions in the C API that look like this PyObject_AsReadBuffer(obj,**buffer,*len) Calling this will return the address of the string hello in *buffer. See C API Reference Manual for more details. This function can also be called from ctypes, but I don't remember the exact procedure for modifying input arguments through a pointer. Note: If you really want a PHYSCIAL RAM address you'll have to make some OS-specific system call (I think) with the logical address, probably needing superuser privileges. Obviously this call isn't exposed in Python, because there's no use for it in Python. Unless you're programming DMA transfers or something like that, there's no use for it in C, either. Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
how to create a pip package
Py hont: I have a single file that I need my crew to pip install. When I Google for how to create a pip package I don't hit anything. Of course that info is out there; I can't seem to pick up the trail of breadcrumbs to it. While I'm looking, could someone push the link in here? Purely for posterity? Thanks! -- Phlip http://c2.com/cgi/wiki?ZeekLand -- http://mail.python.org/mailman/listinfo/python-list
Re: sort values from dictionary of dictionaries python 2.4
On Mon, 09 Nov 2009 06:02:09 -0800, J Wolfe wrote: Hi, I would like to sort this dictionary by the values of the inner dictionary ‘ob’ key. You can't sort dictionaries in Python, because they are unordered hash tables. Giving up the ability to store items in order is one of the things which makes them so fast. You have five choices: (1) Create your own implementation of a sortable dictionary, perhaps using a red-black tree or similar. Unless you write it in C, expect it to be massively slower than the built-in dict type. If you write it in C, expect it to be merely slower than the built-in dict type. (2) Write small helper functions that sort the keys from the dict when you need them sorted. Since you (probably) only have a small number of items in each dict, it should be fast. (3) Use a subclass of dict that sorts the items as needed. (4) Give up on using dictionaries for this, and use some other mapping, like a list of (key, value) tuples. Expect it to be massively slower than the built-in dict type. (5) Give up on the need to have them sorted. My advice is to go with #2, 3 or 5. Here's a basic version of 3 to get you started: class SortedDict(dict): # Untested. def items(self): Return items of self in sorted order. L = super(SortedDict, self).items() L.sort() return L You may even find a version with an appropriate licence you can freely use if you google for Python Sorted Dict. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Most efficient way to pre-grow a list?
En Sun, 08 Nov 2009 10:08:35 -0300, gil_johnson
gil_john...@earthlink.net escribió:
On Nov 6, 8:46 pm, gil_johnson gil_john...@earthlink.net wrote:
The problem I was solving was this: I wanted an array of 32-bit
integers to be used as a bit array, and I wanted it initialized with
all bits set, that is, each member of the array had to be set to
4294967295. Of course, you could set your initializer to 0, or any
other 32-bit number.
Originally I found that the doubling method I wrote about before was a
LOT faster than appending the elements one at a time, and tonight I
tried the list = initializer * N method. Running the code below, the
doubling method is still fastest, at least on my system.
Of course, as long as you avoid the 'one at a time' method, we're
talking about fractions of a second, even for arrays that I think are
huge, like the 536,870,912 byte beastie below.
I don't get your same results; one_item*N is faster on my tests. Note that
you're comparing disparate things:
# Doubling method, run time = 0.413938045502
newArray = array.array('I') # 32-bit unsigned
integers
Method 1 creates an array object; this takes roughly 2**29 bytes
# One at a time, run time = 28.5479729176
newArray2 = array.array('I')
for i in range(134217728):# the same size as above
newArray2.append(4294967295)
This creates also an array object, *and* 134 million integer objects in
the meantime.
# List with *, run time = 1.06160402298
newList = [4294967295] * 134217728
And this creates a list object, not an array.
Note that all your 3 methods create global objects and you never delete
them - so the last method is at a disadvantage.
A more fair test would use timeit, and run just one method at a time:
code
# Written in Python 3.x
# use xrange everywhere with Python 2.x
import array
INITIAL_VALUE = 4294967295
LOG2SIZE=25
SIZE = 2**LOG2SIZE
def method1a():
newArray = array.array('I')
newArray.append(INITIAL_VALUE)
for i in range(LOG2SIZE):
newArray.extend(newArray)
assert len(newArray)==SIZE
assert newArray[SIZE-1]==INITIAL_VALUE
def method2a():
newArray = array.array('I')
for i in range(SIZE):
newArray.append(INITIAL_VALUE)
assert len(newArray)==SIZE
assert newArray[SIZE-1]==INITIAL_VALUE
def method3a():
newArray = array.array('I', [INITIAL_VALUE]) * SIZE
assert len(newArray)==SIZE
assert newArray[SIZE-1]==INITIAL_VALUE
def method1l():
newList = [INITIAL_VALUE]
for i in range(LOG2SIZE):
newList.extend(newList)
assert len(newList)==SIZE
assert newList[SIZE-1]==INITIAL_VALUE
def method2l():
newList = []
for i in range(SIZE):
newList.append(INITIAL_VALUE)
assert len(newList)==SIZE
assert newList[SIZE-1]==INITIAL_VALUE
def method3l():
newList = [INITIAL_VALUE] * SIZE
assert len(newList)==SIZE
assert newList[SIZE-1]==INITIAL_VALUE
/code
D:\temppython31 -m timeit -s from arraygrow import method1a method1a()
10 loops, best of 3: 411 msec per loop
D:\temppython31 -m timeit -s from arraygrow import method2a method2a()
...aborted, too long...
D:\temppython31 -m timeit -s from arraygrow import method3a method3a()
10 loops, best of 3: 377 msec per loop
D:\temppython31 -m timeit -s from arraygrow import method1l method1l()
10 loops, best of 3: 628 msec per loop
D:\temppython31 -m timeit -s from arraygrow import method3l method3l()
10 loops, best of 3: 459 msec per loop
So arrays are faster than lists, and in both cases one_item*N outperforms
your doubling algorithm.
Adding one item at a time is -at least- several hundred times slower; I
was not patient enough to wait.
Finally, I just looked into calling C functions, and found
PyMem_Malloc, PyMem_Realloc, PyMem_Free, etc. in the Memory Management
section of the Python/C API Reference Manual. This gives you
uninitialized memory, and should be really fast, but it's 6:45 AM
here, and I don't have the energy to try it.
No, those are for internal use only, you can't use the resulting pointer
in Python code. An array object is a contiguous memory block, so you don't
miss anything.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: on Namespaces
On Sun, 08 Nov 2009 13:20:23 -0800, webtourist wrote: New bie Question: in Zen of Python - what exactly does the last one mean ? - Namespaces are one honking great idea -- let's do more of those! I mean why the emphasis ? Is it like saying put modules into packages in other programming paradigm s ? Modules are namespaces. So are packages. Classes and class instances are namespaces. Even function scopes are namespaces. When you write: n = None def spam(n): print spam * n def ham(n): print ham * n the n inside spam() and ham() and the global n are in different namespaces, and so independent. http://en.wikipedia.org/wiki/Namespace http://docs.python.org/tutorial/classes.html#python-scopes-and-namespaces -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: how to create a pip package
En Tue, 10 Nov 2009 00:48:26 -0300, Phlip phlip2...@gmail.com escribió: I have a single file that I need my crew to pip install. When I Google for how to create a pip package I don't hit anything. Of course that info is out there; I can't seem to pick up the trail of breadcrumbs to it. See http://pip.openplans.org/ You're looking for the freeze command. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: regular expression matching multiple occurrences of one group
En Mon, 09 Nov 2009 12:59:53 -0300, Jon Clements jon...@googlemail.com
escribió:
On Nov 9, 1:53 pm, pinkisntwell pinkisntw...@gmail.com wrote:
How can I make a regular expression that will match every occurrence
of a group and return each occurrence as a group match? For example,
for a string -c-c-c-c-c, how can I make a regex which will return a
group match for each occurrence of -c?
As well as what Diez has said, unless you absolutely want regexp's,
and by the sounds of it I'm guessing you may be after something more
flexible: what about the pyparsing module [1]. It handles your
situation quite nicely.
import pyparsing
parser = pyparsing.ZeroOrMore('-c')
parser.parseString('-c-c-c-c-c-c')
(['-c', '-c', '-c', '-c', '-c', '-c'], {})
Not that I like regexes very much, but findall does exactly that:
py re.findall('-c', '-c-c-c-c-c-c')
['-c', '-c', '-c', '-c', '-c', '-c']
Now, the OP said return each occurrence as a group match:
py for g in re.finditer(-c, '-c-c-c-c-c-c'): print g, g.span(),
g.group()
...
_sre.SRE_Match object at 0x00C096E8 (0, 2) -c
_sre.SRE_Match object at 0x00C09410 (2, 4) -c
_sre.SRE_Match object at 0x00C096E8 (4, 6) -c
_sre.SRE_Match object at 0x00C09410 (6, 8) -c
_sre.SRE_Match object at 0x00C096E8 (8, 10) -c
_sre.SRE_Match object at 0x00C09410 (10, 12) -c
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
[issue6508] expose setresuid
Gregory P. Smith g...@krypto.org added the comment: Attaching an updated patch that includes unittests. I also changed the set functions to take input as long's instead of int's as that is more likely to fit within a uid_t and forced the return values on the get's to fit within a long and used Py_BuildValue() to handle memory errors and such that could happen while allocating the ints and tuple rather than PyTuple_Pack. Remaining work: os module documentation. -- Added file: http://bugs.python.org/file15297/issue6508-gps01.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6508 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7293] test_msvc9compiler test_reg_class failure on new Windows box
Martin v. Löwis mar...@v.loewis.de added the comment: As you now have access to freshly-installed systems: can you propose such a key? -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7293 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7293] test_msvc9compiler test_reg_class failure on new Windows box
David Bolen db3l@gmail.com added the comment: Well, I can at least start by comparing XP and Win7 immediately post-installation. Any suggestions on guidelines to what can be chosen? Does it have to be a DWORD, or a 0/1 value, or under HKCU for a specific reason? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7293 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: There are some related comments in issue #7281. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7281] copysign() with NaN arguments on OpenSolaris
Mark Dickinson dicki...@gmail.com added the comment: Yes, I don't think Python 2.6 had a deliberate workaround. I suspect that it's just that one version of Python happened to use something like 0.0/0.0 to generate NaN, while another used some equivalent of strtod(nan, ...). I also remember noticing at some point that even on a single machine/OS, the sign bit of 0.0/0.0 depends on which version of gcc and which optimization flags are present. So I think we're in agreement that there's no need to change anything here; I'll close this issue. But: I really *would* like to get the short float repr working with suncc! Issue #5792 is already open for this, so discussion should move there. (This is about much more than consistent nan signs: implementing short float repr gives a whole bunch of benefits: correctly rounded float - string conversions (including all float formatting operations), a correctly rounded 'round' function, a prettier float repr, ...). -- resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7281 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7281] copysign() with NaN arguments on OpenSolaris
Mark Dickinson dicki...@gmail.com added the comment: Just to confirm the above: In 2.6, PyFloat_FromString in Objects/floatobject.c ends up using the system strtod to parse nan and -nan (except that if the system strtod fails to recognise nan for some reason then it returns the result of 0.0 * Infinity instead, and in that case disregards the sign). In 2.7 and 3.x, it ends up calling _Py_parse_inf_or_nan in Python/pystrtod.c, and this returns 0.0 * Infinity for nan and -(0.0 * Infinity) for -nan. And depending on compiler flags, 0.0 * Infinity ends up being either +nan (this usually seems to happen when optimization is on, so that the compiler itself evaluates 0.0 * Infinity), or -nan (which happens when there's no optimization and the FPU ends up doing the 0.0 * Infinity multiplication at runtime.) This should explain the results you're seeing. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7281 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Stefan Krah stefan-use...@bytereef.org added the comment: I can confirm that short float repr() is active and all float tests are passed on this combination: Ubuntu64bit - KVM - OpenSolaris32bit/Python3.2/gcc -- nosy: +skrah ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: Stefan Krah mentions in the issue 7281 discussion that suncc supports the C99 fenv functions. I'm not sure how to use these to set the x87 precision, though. (Setting the rounding mode is straightforward.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7276] UnboundLocalError scoping problem with nested functions
Ole Laursen o...@iola.dk added the comment: OK, sorry, I was under the impression that the global binding was still available (I can't find anything to the contrary here http://docs.python.org/reference/simple_stmts.html#assignment-statements ) but it's obviously using a static definition of scope. The error message isn't super helpful, though. :) Would it make sense to add a (non-local tmp is shadowed)? I guess that's easy to detect? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7276 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: I see two alternatives: (1) Use fesetenv. I don't know what the appropriate value to pass would be though, or even whether solaris lets you use fesetenv to control the x87 precision. It seems that its primary purpose is to set flags and traps. (2) Use inline assembly, assuming that suncc supports this. This seems simpler. It's just a matter of figuring out the syntax that suncc expects for asm, and making sure the code is properly tested. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: Looking at: http://docs.sun.com/app/docs/doc/816-5172/fesetenv-3m it seems that fesetenv isn't what we want here. It 'only installs the state of the floating-point status flags represented through its argument'. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: Stefan, is it possible that suncc already accepts the assembler syntax used in Python/pymath.h (py3k or trunk) for the functions _Py_get_387controlword and _Py_set_387controlword? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7282] RLocks leak references when used in raw threads
Antoine Pitrou pit...@free.fr added the comment: An updated patch with test. -- Added file: http://bugs.python.org/file15298/rlock_leak2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7282 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Changes by Mark Dickinson dicki...@gmail.com: -- assignee: - mark.dickinson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7242] Forking in a thread raises RuntimeError
Zsolt Cserna zsolt.cse...@morganstanley.com added the comment: Additional info: I've tested it on solaris 10 / sparc 32-bit, and my test script runs fine on that. Based on my test it seems that this bug does not affect solaris 10. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7242 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Stefan Krah stefan-use...@bytereef.org added the comment: The inline asm compiles, but I don't know how good the GNU inline asm support is with suncc in general. I'm not a heavy user of suncc, I just use it for testing. That said, perhaps fesetprec works, too: http://docs.sun.com/app/docs/doc/816-5172/fesetprec-3m -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: Excellent! From a bit of searching, it looks as though this assembler syntax works on icc as well, which is very good news. Thanks for finding fesetprec as well. It's a shame this isn't standard C. Oh well; maybe for C201X. I think I'd prefer to stick with the inline assembly, since it seems that there's very little to do to make this just work. Next problem: when compiling with suncc, how do I detect (in the configure script) (1) that I'm using suncc, and (2) whether the hardware is x86 or not (preferably excluding the case of x86-64). For gcc, configure.in is using: if test -n `$CC -dM -E - /dev/null | grep i386` to detect whether we're on x86. I guess it's too much to hope for that this works for suncc as well. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: fesetprec and fegetprec are at least semi-standard, it seems. They're recommended in the C99 rationale (see page 121 of http://www.open-std.org/jtc1/sc22/wg14/www/C99RationaleV5.10.pdf ). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Stefan Krah stefan-use...@bytereef.org added the comment: If gcc and suncc are present, ./configure chooses gcc and everything is fine. If only suncc is present, it's detected as cc. These tests should be possible: ste...@opensolaris:~/svn/py3k$ cc -V cc: Sun C 5.9 SunOS_i386 Patch 124868-07 2008/10/07 usage: cc [ options] files. Use 'cc -flags' for details ste...@opensolaris:~/svn/py3k$ if cc -V 21 | grep -q 'SunOS_i386'; then echo yes; fi yes ste...@opensolaris:~/svn/py3k$ uname -a SunOS opensolaris 5.11 snv_101b i86pc i386 i86pc Solaris ste...@opensolaris:~/svn/py3k$ if uname -a | grep -q i386; then echo yes; fi yes -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5792] Enable short float repr() on Solaris/x86
Mark Dickinson dicki...@gmail.com added the comment: Thanks. uname looks like the way to go, then. Is your copy of OpenSolaris running in 32-bit mode or 64-bit mode? Does the mode make a difference to the output of uname, or is uname -p always i386, regardless of the mode? I think the configure test for the inline assembly should go ahead on both x86 and x86-64: it seems likely that a 64-bit OS would be using SSE2 instructions for floating-point (which would make setting and getting the x87 control word unnecessary) instead of the x87 FPU, but I don't know that for sure. Actually, I guess I could just make that configure test unconditional. It'll fail on non-x86 hardware, but that's no big deal. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5792 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
