Re: Does python hate cathy?
It seems like this is mostly a non-issue. The original code actually works correctly (of course the updated versions that solve the exception problem are probably better). The only thing that is going haywire is the interpreter shutdown process. I think it is going a bit overboard to consider __del__ harmful because it might throw an exception as the program is quitting. It is important to not rely on __del__ too much but there can be some designs where you need to know when something is gone, and you don't know exactly where or when something is deleted. Then again, I can count the number of times I have ever needed __del__ with no fingers (never used it!). Still, quite interesting to explore. -- http://mail.python.org/mailman/listinfo/python-list
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Re: Shortcutting the function call stack
Il Mon, 24 Mar 2008 15:05:38 -0700, Julien ha scritto: ... I'll try to explain a bit more what I'm after, and hopefully that will be clearer. In fact, what I'm trying to do is to hijack (I'm making up the term) a function: def hijacker(arg): if I_feel_its_necessary: hijack_caller_function_and_make_it_return(1) def my_function1(arg): hijacker(something) ... # Continue as normal return 2 def my_function2(arg): ... # Maybe do some processing here hijacker(whatever) ... # Continue as normal return 3 You could simply do something like: def hijacker(arg): if I_feel_its_necessary: return True, 1 else: return False, 0 def my_function1(arg): abort, code = hijiacker(something); if abort: return code ... # Continue as normal return 2 def my_function2(arg): ... # Maybe do some processing here abort, code = hijiacker(whatever); if abort: return code ... # Continue as normal return 3 Although purists may frown upon the double return statement, it is still a much cleaner code than using some magic to abort the caller function. And tou have only to add two lines - always the same - at each function. Ciao - FB -- http://mail.python.org/mailman/listinfo/python-list
Re: eval and unicode
I think your confusion comes from the use of the interactive mode. It is not. The example provided in the original post will also work when you put then into a python source file. PEP 263 doesn't really apply to the interactive mode, hence the behavior in interactive mode is undefined, and may and will change across Python versions. The expression passed to eval() cannot be considered an interactive session. Ideally, interactive mode should assume the terminal's encoding for source code, but that has not been implemented. Again, please read the original messages - many of my examples also work when you put them into a python source file. They have nothing to do with terminals. Laszlo -- http://mail.python.org/mailman/listinfo/python-list
StringIO + unicode
Is there a standard in-memory file interface for reading/writting
unicode stings? Something like StringIO.
E.g. this would be possible:
- create UnicodeStringIO
- write unicode strings into it
- wite data (binary) string of UnicodeStringIO into a file ('wb' mode)
and then later:
- read the same file with codecs.open(filename,r,encoding=utf-8)
Maybe there is no standard class for this and I have to implement it
myself. (?)
Thanks,
Laszlo
--
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Re: eval and unicode
Martin v. Löwis wrote: eval() somehow decoded the passed expression. No question. It did not use 'ascii', nor 'latin2' but something else. Why is that? Why there is a particular encoding hard coded into eval? Which is that encoding? (I could not decide which one, since '\xdb' will be the same in latin1, latin3, latin4 and probably many others.) I think in all your examples, you pass a Unicode string to eval, not a byte string. In that case, it will encode the string as UTF-8, and then parse the resulting byte string. You are definitely wrong: s = 'u' + '\xdb' + '' type(s) # type 'str' eval(s) # u'\xdb' s2 = '# -*- coding: latin2 -*-\n' + s type(s2) # type 'str' eval(s2) # u'\u0170' Would you please read the original messages before sending answers? :-D L -- http://mail.python.org/mailman/listinfo/python-list
importing a csv file as a Numeric array
What's a good way of importing a csv text file of floats into a Numeric array? I tried the csv module and it seems to work well so long as I've ints. Does anyone have any suggestions / snippets that work to import a csv file of floats into a Numeric array? -Rahul -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.2.1 and select()
Il Mon, 24 Mar 2008 17:58:42 -0400, Derek Martin ha scritto: Hi kids! I've got some code that uses select.select() to capture all the output of a subprocess (both stdout and stderr, see below). This code works as expected on a variety of Fedora systems running Python 2.4.0, but on a Debian Sarge system running Python 2.2.1 it's a no-go. I'm thinking this is a bug in that particular version of Python, but I'd like to have confirmation if anyone can provide it. The behavior I see is this: the call to select() returns: [file corresponding to sub-proc's STDOUT] [] [] If and only if the total amount of output is greater than the specified buffer size, then reading on this file hangs indefinitely. For what it's worth, the program whose output I need to capture with this generates about 17k of output to STDERR, and about 1k of output to STDOUT, at essentially random intervals. But I also ran it with a test shell script that generates roughly the same amount of output to each file object, alternating between STDOUT and STDERR, with the same results. Yes, I'm aware that this version of Python is quite old, but I don't have a great deal of control over that (though if this is indeed a python bug, as opposed to a problem with my implementation, it might provide some leverage to get it upgraded)... Thanks in advance for any help you can provide. The code in question (quite short) follows: def capture(cmd): buffsize = 8192 inlist = [] inbuf = errbuf = io = popen2.Popen3(cmd, True, buffsize) inlist.append(io.fromchild) inlist.append(io.childerr) while True: ins, outs, excepts = select.select(inlist, [], []) for i in ins: x = i.read() if not x: inlist.remove(i) else: if i == io.fromchild: inbuf += x if i == io.childerr: errbuf += x if not inlist: break if io.wait(): raise FailedExitStatus, errbuf return (inbuf, errbuf) If anyone would like, I could also provide a shell script and a main program one could use to test this function... From yor description, it would seem that two events occurs: - there are actual data to read, but in amount less than bufsize. - the subsequent read waits (for wathever reason) until a full buffer can be read, and therefore lock your program. Try specifying bufsize=1 or doing read(1). If my guess is correct, you should not see the problem. I'm not sure that either is a good solution for you, since both have performance issues. Anyway, I doubt that the python library does more than wrapping the system call, so if there is a bug it is probably in the software layers under python. Ciao FB -- http://mail.python.org/mailman/listinfo/python-list
Re: StringIO + unicode
Laszlo Nagy wrote:
Is there a standard in-memory file interface for reading/writting
unicode stings? Something like StringIO.
E.g. this would be possible:
- create UnicodeStringIO
- write unicode strings into it
- wite data (binary) string of UnicodeStringIO into a file ('wb' mode)
and then later:
- read the same file with codecs.open(filename,r,encoding=utf-8)
Maybe there is no standard class for this and I have to implement it
myself. (?)
Never tried it, but can't you just combine StringIO + codecs-module, the
latter offers a wrapping-service for streams.
Diez
--
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Re: Code folder with Emacs
Grant == Grant Edwards [EMAIL PROTECTED] writes: Grant Has anybody figured out how to do code folding of Python source Grant files in emacs? I use outline-minor-mode with the following home baked configuration: ;; Python stuff for outline mode. (defvar py-outline-regexp ^\\([ \t]*\\)\\(def\\|class\\|if\\|elif\\|else\\|while\\|for\\|try\\|except\\|with\\) This variable defines what constitutes a 'headline' to outline mode.) (defun py-outline-level () Report outline level for Python outlining. (save-excursion (end-of-line) (let ((indentation (progn (re-search-backward py-outline-regexp) (match-string-no-properties 1 (if (and ( (length indentation) 0) (string= \t (substring indentation 0 1))) (length indentation) (/ (length indentation) py-indent-offset) (add-hook 'python-mode-hook '(lambda () (outline-minor-mode 1) (setq outline-regexp py-outline-regexp outline-level 'py-outline-level))) Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Breaking the barrier of a broken paradigm... part 1
On Mar 24, 9:39 pm, Ryan Ginstrom [EMAIL PROTECTED] wrote:
On Behalf Of john s.
import os, sys, string, copy, getopt, linecache
from traceback import format_exception
#The file we read in...
fileHandle = /etc/passwd
srcFile = open(fileHandle,'r')
srcList = srcFile.readlines()
#yah, a for loop that iterates through the file of lines
for i in srcList:
strUsr = string.split(i,:)
theUsr = strUsr[0]
usrHome = /expirt/home/,theUsr,/
usrHome = ''.join(usrHome)
How about for starters:
import os
for line in open(/etc/passwd):
user, _pwd = line.split(:)
^- Ok this one here we are taking a string spliting it
into to variables...
user gets one (the first) and _pwd gets to hold the
leftovers?
user_home = os.path.join(/expirt/home, user)
try:
os.makedirs('usrHome' )
except Exception, e:
print e
if os.path.exists(user_home):
^- are(n't) exists and os.path.isadir
interchangable?
*nods in Bryan O. direction*
print User Home dir exists, checking and fixing permissions.
else:
print Do other stuff
Regards,
Ryan Ginstrom
--
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Re: Breaking the barrier of a broken paradigm... part 1
john s. wrote:
#/usr/bin/enviro python
#Purpose - a dropped in useracct/pass file is on a new server to build
a cluster... Alas there are no home #directories.. Let me rip through
the passfile, grab the correct field (or build it) and use it to make
the directory!
import os, sys, string, copy, getopt, linecache
from traceback import format_exception
#The file we read in...
fileHandle = /etc/passwd
srcFile = open(fileHandle,'r')
srcList = srcFile.readlines()
#yah, a for loop that iterates through the file of lines
for i in srcList:
Convention is that the name i is for an integer.
strUsr = string.split(i,:)
theUsr = strUsr[0]
usrHome = /expirt/home/,theUsr,/
usrHome = ''.join(usrHome)
As Ryan noted, os.path is the favored way.
print printing usrHome:,usrHome
print is it a dir?: , os.path.isdir(usrHome)
# try to test if it's a dir... for some reason this mis-behaves...
maybe I'm not thinking about it correctly..
if os.path.isdir(usrHome) != 'False':
That should always evaluate true. False != 'False'. I think you want:
if not os.path.exists(usrHome):
print User Home dir doesn't exist creating.
try:
os.makedirs('usrHome' )
except Exception, e:
print e
I don't think you want to catch the exception there. If creating the dir
fails, the next bits of code should not execute.
print usrHome is: ,usrHome
print theUsr is: ,theUsr
os.system('/usr/bin/chmod 750 ' + usrHome)
os.system('/usr/bin/chown ' + theUsr + ' ' + usrHome)
#OMG, there is directory that happens to already exist! well, due
diligence and love for the queen dictates we #provide due
dilligence, (e.g. wipe our asses properly)
The path could exist but not be a directory.
else:
print User Home dir exist, checking and fixing permissions.
print usrHome is: ,usrHome
print theUsr is: ,theUsr
os.system('/usr/bin/chmod 750 ' + usrHome)
os.system('/usr/bin/chown ' + theUsr + ' ' + usrHome)
#I know that I can't optimize the line below further... or... can I?
sys.exit(Thanks for using pyDirFixr...)
Given the Unixy nature of your code, you probably want to sys.exit(0)
for success and 1 or 2 for failure.
Happy hacking,
--
--Bryan
--
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Re: How to send a var to stdin of an external software
Bryan Olson a écrit :
Benjamin Watine wrote:
[EMAIL PROTECTED] a écrit :
I wrote:
And here's a thread example, based on Benjamin's code:
[...]
Doh! Race condition. Make that:
import subprocess
import thread
import Queue
def readtoq(pipe, q):
q.put(pipe.read())
cat = subprocess.Popen('cat', shell=True, stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
myVar = str(range(100)) # arbitrary test data.
q = Queue.Queue()
thread.start_new_thread(readtoq, (cat.stdout, q))
cat.stdin.write(myVar)
cat.stdin.close()
cat.wait()
myNewVar = q.get()
assert myNewVar == myVar
print len(myNewVar), bytes piped around.
Great, it works, thank you Bryan !
Could you explain me why you use a queue instead of a simple array for
getting the piped var ?
The call to q.get() will block until an item is in the queue.
At that point in the program, we had already waited for cat to
terminate:
cat.wait()
myNewVar = q.get()
But passing cat.wait() does not imply that our own thread has
already read all of cat's output and put it in some destination
object. Data could still be in transit.
My first version, subsequently titled, Doh! Race condition,
worked in all of several runs of its built-in test. Doesn't
make it right.
OK, so if I understand well what you said, using queue allow to be sure
that the data is passed in totality before coninuing with next
instruction. That make sense.
Using thread and queue seems to be very more slow than using files
redirection with bash. I'll see if it make a great load average and/or
I/O time.
Thanks again for your help Bryan.
Ben
--
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Re: Breaking the barrier of a broken paradigm... part 1
On Mar 25, 6:34 am, Bryan Olson [EMAIL PROTECTED] wrote:
john s. wrote:
#/usr/bin/enviro python
#Purpose - a dropped in useracct/pass file is on a new server to build
#a cluster... Alas there are no home directories.. Let me rip through
#the passfile, grab the correct field (or build it) and use it to make
#the directory!
import os, sys, string, copy, getopt, linecache
from traceback import format_exception
#The file we read in...
fileHandle = /etc/passwd
srcFile = open(fileHandle,'r')
srcList = srcFile.readlines()
#yah, a for loop that iterates through the file of lines
for i in srcList:
Convention is that the name i is for an integer.
just a bit of silly walk on my part in the comment field...
strUsr = string.split(i,:)
theUsr = strUsr[0]
usrHome = /expirt/home/,theUsr,/
usrHome = ''.join(usrHome)
As Ryan noted, os.path is the favored way.
print printing usrHome:,usrHome
print is it a dir?: , os.path.isdir(usrHome)
#try to test if it's a dir... for some reason this mis-behaves...
#maybe I'm not thinking about it correctly..
if os.path.isdir(usrHome) != 'False':
That should always evaluate true. False != 'False'. I think you want:
ok... yes I do
if not os.path.exists(usrHome):
print User Home dir doesn't exist creating.
try:
os.makedirs(usrHome)
os.system('/usr/bin/chmod 750 ' + usrHome)
os.system('/usr/bin/chown ' + theUsr + ' ' + usrHome)
except Exception, e:
print e
I don't think you want to catch the exception there. If creating the dir
fails, the next bits of code should not execute.
ok. I see that now.
#OMG, there is directory that happens to already exist! well,
#love for the queen dictates we provide due
#dilligence, (e.g. wipe our asses properly)
The path could exist but not be a directory.
So isadir is slightly better then exists?
It felt like it was not working right...
(probably because I was double testing the exp I see now)
else:
print User Home dir exist, checking and fixing permissions.
sys.exit(Thanks for using pyDirFixr...)
Given the Unixy nature of your code, you probably want to sys.exit(0)
for success and 1 or 2 for failure.
got it. I'm guessing I'm better off with a last line print g'bye
then sys.exit versus trying both at once...
Happy hacking,
--
--Bryan
Thanks Bryan :)
-John
--
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My python interpreter became mad !
Yes, my python interpreter seems to became mad ; or may be it's me ! :)
I'm trying to use re module to match text with regular expression. In a
first time, all works right. But since yesterday, I have a very strange
behaviour :
$ python2.4
Python 2.4.4 (#2, Apr 5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type help, copyright, credits or license for more information.
import re
X-Spam-Flag: YES
X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on w3hosting.org
X-Spam-Level: **
X-Spam-Status: Yes, score=22.2 required=5.0 tests=MISSING_HB_SEP,
MISSING_HEADERS,MISSING_SUBJECT,RAZOR2_CF_RANGE_51_100,
RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,TO_CC_NONE,UNPARSEABLE_RELAY,
URIBL_AB_SURBL,URIBL_JP_SURBL,URIBL_OB_SURBL,URIBL_SBL,URIBL_SC_SURBL,
URIBL_WS_SURBL autolearn=failed version=3.1.7-deb
Traceback (most recent call last):
File stdin, line 1, in ?
File /etc/postfix/re.py, line 19, in ?
m = re.match('(Spam)', mail)
AttributeError: 'module' object has no attribute 'match'
What's the hell ?? I'm just importing the re module. The code showed, is
a previous test code, that seems to be buffered and that make an error.
Each call to re module generate that error.
How can I workaround ? Is there is a way to flush or restart python
interpreter. Is it a bug in python ??
Thanks !
Ben
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Re: My python interpreter became mad !
Benjamin Watine wrote:
Yes, my python interpreter seems to became mad ; or may be it's me ! :)
I'm trying to use re module to match text with regular expression. In a
first time, all works right. But since yesterday, I have a very strange
behaviour :
$ python2.4
Python 2.4.4 (#2, Apr 5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type help, copyright, credits or license for more information.
import re
X-Spam-Flag: YES
X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on w3hosting.org
X-Spam-Level: **
X-Spam-Status: Yes, score=22.2 required=5.0 tests=MISSING_HB_SEP,
MISSING_HEADERS,MISSING_SUBJECT,RAZOR2_CF_RANGE_51_100,
RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,TO_CC_NONE,UNPARSEABLE_RELAY,
URIBL_AB_SURBL,URIBL_JP_SURBL,URIBL_OB_SURBL,URIBL_SBL,URIBL_SC_SURBL,
URIBL_WS_SURBL autolearn=failed version=3.1.7-deb
Traceback (most recent call last):
File stdin, line 1, in ?
File /etc/postfix/re.py, line 19, in ?
m = re.match('(Spam)', mail)
AttributeError: 'module' object has no attribute 'match'
Extremely likely that, in the course of testing some
re technique, you've created a module in this directory
called re.py. When you import re, you're actually
importing your own module.
TJG
--
http://mail.python.org/mailman/listinfo/python-list
Re: My python interpreter became mad !
On Mar 25, 9:05 pm, Benjamin Watine [EMAIL PROTECTED] wrote: I'm trying to use re module to match text with regular expression. In a first time, all works right. But since yesterday, I have a very strange behaviour : The following line in the traceback shows you're not using the default python module: File /etc/postfix/re.py, line 19, in ? Were you using the interpreter in the /etc/postfix directory? The re module there seems to be shadowing the site package. Hope this helps. - alex23 -- http://mail.python.org/mailman/listinfo/python-list
Re: My python interpreter became mad !
On Mar 25, 10:05 pm, Benjamin Watine [EMAIL PROTECTED] wrote:
Yes, my python interpreter seems to became mad ; or may be it's me ! :)
I'm trying to use re module to match text with regular expression. In a
first time, all works right. But since yesterday, I have a very strange
behaviour :
$ python2.4
Python 2.4.4 (#2, Apr 5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type help, copyright, credits or license for more information.
import re
X-Spam-Flag: YES
X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on w3hosting.org
X-Spam-Level: **
X-Spam-Status: Yes, score=22.2 required=5.0 tests=MISSING_HB_SEP,
MISSING_HEADERS,MISSING_SUBJECT,RAZOR2_CF_RANGE_51_100,
RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,TO_CC_NONE,UNPARSEABLE_RELAY,
URIBL_AB_SURBL,URIBL_JP_SURBL,URIBL_OB_SURBL,URIBL_SBL,URIBL_SC_SURBL,
URIBL_WS_SURBL autolearn=failed version=3.1.7-deb
Traceback (most recent call last):
File stdin, line 1, in ?
File /etc/postfix/re.py, line 19, in ?
m = re.match('(Spam)', mail)
AttributeError: 'module' object has no attribute 'match'
What's the hell ?? I'm just importing the re module.
No you're not importing *the* re module. You're importing *an* re
module, the first one that is found. In this case: your own re.py.
Rename it.
--
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Inheritance question
given two classes: class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo.getid() b = self.id return '%d.%d' % (a,b) While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results -- http://mail.python.org/mailman/listinfo/python-list
Outlook 2003 and Python
Good Day. I woul like to ask you if it is possible to make a program in python that move the email messages that I had received in outlook 2003, to a specific folder, accoding to the sender's name: Es: [EMAIL PROTECTED] -- folder Martin. Thanks. Riccardo. -- http://mail.python.org/mailman/listinfo/python-list
Issues with Python + Batch File
Hi All, I've a batch file which invoks a python file. The python code in the file brings up a GUI. The GUI is of a test tool which can execute scripts. I tried using the following 2 sample of code for my batch file: * (1) (2)* D:\opengui.py D:\opengui.py goto:end goto:end :end :end EXIT TASKKILL /IM C:\WINDOWS\system32\cmd.exe Double clicking on the batch file brings up a DOS BOX which opens up the GUI. On Closing the GUI, the DOS BOX both get closed. But if I close the GUI when a test is under execution, the GUI gets closed but the DOS BOX still remains open. I want to some how close the DOS BOX when the GUI is closed. Thanks Regards, Tarun [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Rather than use Foo.bar(), use this syntax to call methods of the super class: super(ParentClass, self).method() -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 10:44 pm, Tzury Bar Yochay [EMAIL PROTECTED] wrote: given two classes: class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo.getid() b = self.id return '%d.%d' % (a,b) While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results Post the code that you actually executed. What you have shown lacks the code to execute it ... but the execution will fail anyway: a = Foo.getid() TypeError: unbound method getid() must be called with Foo instance as first argument (got nothing instead) -- http://mail.python.org/mailman/listinfo/python-list
Time module is not behaving.
Hi I'm just getting myself going again on Python and would appreciate any help. My install of Python seems to have some difficulty loading and using the time module in a script. Strange thing is that if I start another instance of Python I can type in my program manually/interactively and it works. The version of Python I am using is... Python 2.5.1 (r251:54863, Mar 7 2008, 04:10:12) [GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2 Installed on a Ubuntu 7.10 workstation. Here's my little program [EMAIL PROTECTED]:~/tmp$ more time.py import time print time.time() And this is what happens when I run it [EMAIL PROTECTED]:~/tmp$ python time.py Traceback (most recent call last): File time.py, line 1, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable Error in sys.excepthook: Traceback (most recent call last): File /var/lib/python-support/python2.5/apport_python_hook.py, line 38, in apport_excepthook from apport.fileutils import likely_packaged File /var/lib/python-support/python2.5/apport/__init__.py, line 1, in module from apport.report import Report File /var/lib/python-support/python2.5/apport/report.py, line 14, in module import subprocess, tempfile, os.path, urllib, re, pwd, grp, os, sys File /usr/lib/python2.5/urllib.py, line 28, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable Original exception was: Traceback (most recent call last): File time.py, line 1, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable [EMAIL PROTECTED]:~/tmp$ Any hints or tips appreciated. Jeff. -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 2:00 pm, John Machin [EMAIL PROTECTED] wrote: On Mar 25, 10:44 pm, Tzury Bar Yochay [EMAIL PROTECTED] wrote: given two classes: class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo.getid() b = self.id return '%d.%d' % (a,b) While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results Post the code that you actually executed. What you have shown lacks the code to execute it ... but the execution will fail anyway: a = Foo.getid() TypeError: unbound method getid() must be called with Foo instance as first argument (got nothing instead) sorry, it should have been: a = Foo.getid(self) instead of a = Foo.getid() -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Rather than use Foo.bar(), use this syntax to call methods of the super class: super(ParentClass, self).method() Hi Jeff, here is the nw version which cause an error class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(Foo, self).getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() Traceback (most recent call last): File a.py, line 19, in module FooSon().getid() File a.py, line 14, in getid a = super(Foo, self).getid() AttributeError: 'super' object has no attribute 'getid' -- http://mail.python.org/mailman/listinfo/python-list
Re: embedded python in c++ packaging
Sorry for long delay,
I've tried below code (Setting pythonpath environment variable)
and then initialize python interpreter but the embedded python interpreter
did not get the newly assigned PYTHONPATH.
I ve looked at the sys.path in python code (that is run by the embedded
interpreter) and it behaved according to older pythonpath.
Setting environment variable seemed to be correct.
Does py_initialize run in another thread so it starts before setting the
environment var?
// add custom plib.zip archive to pythonpath
if(!::getenv(PYTHONPATH))
{
::putenv(PYTHONPATH=.;.\\plib.zip);
}
else ::putenv(PYTHONPATH=%PYTHONPATH%;.\\plib.zip);
std::cout PYTHONPath Set to: ::getenv(PYTHONPATH) std::endl
And Again: ;
system(echo %PYTHONPATH%);
Py_Initialize();
Regards,
On Fri, Feb 8, 2008 at 2:08 AM, Bronner, Gregory [EMAIL PROTECTED]
wrote:
I've done this the rather old-fashioned way.
Basically, what I do is:
Step 1:
Embed Python:
if(!::getenv(PYTHONHOME))
{
::putenv(PYTHONHOME=Whatever);
}
if(!::getenv(PYTHONPATH))
{
::putenv(PYTHONPATH=.);
}
Py_SetProgramName(leaktester);
Py_InitializeEx(0);
init_memoryhoginterface(); // This initializes your SWIG module
PyRun_SimpleString(print 'HELLO FROM PYTHON'); //--- OR you can do
something else here like run a file
Step 2:
Extend python to talk back to your C++ code.
I use one giant SWIG module (see init function above)
SWIG allows you to finely control what you expose to python, so you don't
wind up exposing the whole C++ API.
--
*From:* Furkan Kuru [mailto:[EMAIL PROTECTED]
*Sent:* Thursday, February 07, 2008 6:06 PM
*To:* python-list@python.org
*Subject:* Re: embedded python in c++ packaging
I do not have access to my development machine right now.
but is it enough adding just a simple line at the top of my main python
file 'sys.path.append(modules.zip)' before importing any other modules?
On 2/7/08, Gabriel Genellina [EMAIL PROTECTED] wrote:
En Thu, 07 Feb 2008 16:18:57 -0200, Joshua Kugler [EMAIL PROTECTED]
escribió:
Furkan Kuru wrote:
I have been developing an application in C++ that embeds Python
interpreter. It takes advantage of too many modules from Python.
When I want to package this application, I need to add too many files
(.pyc) from Python/lib folder together with Python25.dll.
Is there a way to pack these .pyc files to a zip file and redirect
Python25.dll to that zip file?
That is effectively what py2exe does with the modules required by the
main
application. It takes all the required modules and puts them in a
library.zip file. You might take a look at how it does it.
Using py2exe has an additional advantage, it recursively scans all
modules
looking for dependencies.
Once you know the required set of modules, you can bundle them in a .zip
file and add its full path into sys.path (the absolute path including
filename and .zip extension). Python does look into the .zip searching
for
modules.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
--
Furkan Kuru
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Need help with OptionParser
today i've decided to use optionparser instead of GetOpt and unfortunately i've got an error which i cant handle my pice of code: from optparse import OptionParser def main(): usage = usage: %prog [options] parser = OptionParser(usage) parser.add_option(-f, --file, dest=filename, help=executable filename, metavar=FILE) parser.add_option(-b, --bighosts, action=store_true, dest=bighosts, default=False, help=with big hosts [default: %default]) (options, args) = parser.parse_args() if not options.bighosts: print parser.print_usage() if __name__==__main__: main() if i run test3.py without any arguments, i wait for generated help, but i see the following Usage: test3.py [options] None why None? Where are all of my options -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
a = super(Foo, self).getid() should be a = super(FooSon, self).getid() On Tue, Mar 25, 2008 at 2:34 PM, Tzury Bar Yochay [EMAIL PROTECTED] wrote: Rather than use Foo.bar(), use this syntax to call methods of the super class: super(ParentClass, self).method() Hi Jeff, here is the nw version which cause an error class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(Foo, self).getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() Traceback (most recent call last): File a.py, line 19, in module FooSon().getid() File a.py, line 14, in getid a = super(Foo, self).getid() AttributeError: 'super' object has no attribute 'getid' -- http://mail.python.org/mailman/listinfo/python-list -- Furkan Kuru -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
In the derived class init you set self.id to 2 so when you call getid method it just returns self.id which is now 2. you can use another variable name. On Tue, Mar 25, 2008 at 1:44 PM, Tzury Bar Yochay [EMAIL PROTECTED] wrote: given two classes: class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo.getid() b = self.id return '%d.%d' % (a,b) While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results -- http://mail.python.org/mailman/listinfo/python-list -- Furkan Kuru -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help with OptionParser
On 25 мар, 15:42, hellt [EMAIL PROTECTED] wrote: today i've decided to use optionparser instead of GetOpt and unfortunately i've got an error which i cant handle my pice of code: from optparse import OptionParser def main(): usage = usage: %prog [options] parser = OptionParser(usage) parser.add_option(-f, --file, dest=filename, help=executable filename, metavar=FILE) parser.add_option(-b, --bighosts, action=store_true, dest=bighosts, default=False, help=with big hosts [default: %default]) (options, args) = parser.parse_args() if not options.bighosts: print parser.print_usage() if __name__==__main__: main() if i run test3.py without any arguments, i wait for generated help, but i see the following Usage: test3.py [options] None why None? Where are all of my options =) my bad unnecessary print in print parser.print_usage() and print_help() instead print_usage() -- http://mail.python.org/mailman/listinfo/python-list
Re: My python interpreter became mad !
Most probably X-Spam added itself to your path.
you should look at your PATH and PYTHONPATH environment variables.
On Tue, Mar 25, 2008 at 1:40 PM, John Machin [EMAIL PROTECTED] wrote:
On Mar 25, 10:05 pm, Benjamin Watine [EMAIL PROTECTED] wrote:
Yes, my python interpreter seems to became mad ; or may be it's me ! :)
I'm trying to use re module to match text with regular expression. In a
first time, all works right. But since yesterday, I have a very strange
behaviour :
$ python2.4
Python 2.4.4 (#2, Apr 5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type help, copyright, credits or license for more information.
import re
X-Spam-Flag: YES
X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on
w3hosting.org
X-Spam-Level: **
X-Spam-Status: Yes, score=22.2 required=5.0 tests=MISSING_HB_SEP,
MISSING_HEADERS,MISSING_SUBJECT,RAZOR2_CF_RANGE_51_100,
RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,TO_CC_NONE,UNPARSEABLE_RELAY,
URIBL_AB_SURBL,URIBL_JP_SURBL,URIBL_OB_SURBL,URIBL_SBL,URIBL_SC_SURBL,
URIBL_WS_SURBL autolearn=failed version=3.1.7-deb
Traceback (most recent call last):
File stdin, line 1, in ?
File /etc/postfix/re.py, line 19, in ?
m = re.match('(Spam)', mail)
AttributeError: 'module' object has no attribute 'match'
What's the hell ?? I'm just importing the re module.
No you're not importing *the* re module. You're importing *an* re
module, the first one that is found. In this case: your own re.py.
Rename it.
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--
Furkan Kuru
--
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Re: Need help with OptionParser
On Tue, 25 Mar 2008 05:42:03 -0700, hellt wrote: [snip] usage = usage: %prog [options] parser = OptionParser(usage) parser.add_option(-f, --file, dest=filename, help=executable filename, metavar=FILE) parser.add_option(-b, --bighosts, action=store_true, dest=bighosts, default=False, help=with big hosts [default: %default]) (options, args) = parser.parse_args() if not options.bighosts: print parser.print_usage() FWIW you should perhaps give a special error message rather than the generic help (something like you need to specify bighosts, see --help for details). If possible, you should use `args` rather than an option (they are, well, optional). But if your program takes a lot of mandatory arguments, using options in order to mix them at will might be fine. HTH, -- http://mail.python.org/mailman/listinfo/python-list
sendmail should throw an exception but does not
I need to know if an email was refused for whatever reason, it makes no difference. The email is sent to an email address that does not exist in a foreign domain. I can see in the postfix log that the email was sent and bounced with the error code 550. The problem is that sendmail should throw an exception but it does not. And the returned dictionary is empty as if the email was accepted. d = smtpserver.sendmail(sender, recipient, m.as_string()) I guess that the error code returned by the destination mail server is not is not forwarded to the client by my mail server. Regards, Clodoaldo Pinto Neto -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading new mail from outlook
SPJ wrote: I am trying to create new tickets in the ticketing system using python. When I receive new email from a particular address, I have to trigger the python script and parse the mail in required format. The main hurdle here is, how to invoke the script on arrival of new mail? I checked the outlook settings and found that it supports only microsoft VB script and Jscript. Is there any other way? I mean, if I make a daemon, how will it be notified of new mail? Is there any python module that does this? I am not sure if this is the right place to ask this, since it is also a microsoft related question. But any help is appreciated. Outlook does have some events in its automation interface (which you can handle from within Python by using win32com.client.DispatchWithEvents) but if an immediate response weren't critical it's probably slightly easier to schedule a job to interrogate the mailbox every so often and harvest any new emails. Depends on your particular need. TJG -- http://mail.python.org/mailman/listinfo/python-list
Re: My python interpreter became mad !
John Machin a écrit :
On Mar 25, 10:05 pm, Benjamin Watine [EMAIL PROTECTED] wrote:
Yes, my python interpreter seems to became mad ; or may be it's me ! :)
I'm trying to use re module to match text with regular expression. In a
first time, all works right. But since yesterday, I have a very strange
behaviour :
$ python2.4
Python 2.4.4 (#2, Apr 5 2007, 20:11:18)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type help, copyright, credits or license for more information.
import re
X-Spam-Flag: YES
X-Spam-Checker-Version: SpamAssassin 3.1.7-deb (2006-10-05) on w3hosting.org
X-Spam-Level: **
X-Spam-Status: Yes, score=22.2 required=5.0 tests=MISSING_HB_SEP,
MISSING_HEADERS,MISSING_SUBJECT,RAZOR2_CF_RANGE_51_100,
RAZOR2_CF_RANGE_E8_51_100,RAZOR2_CHECK,TO_CC_NONE,UNPARSEABLE_RELAY,
URIBL_AB_SURBL,URIBL_JP_SURBL,URIBL_OB_SURBL,URIBL_SBL,URIBL_SC_SURBL,
URIBL_WS_SURBL autolearn=failed version=3.1.7-deb
Traceback (most recent call last):
File stdin, line 1, in ?
File /etc/postfix/re.py, line 19, in ?
m = re.match('(Spam)', mail)
AttributeError: 'module' object has no attribute 'match'
What's the hell ?? I'm just importing the re module.
No you're not importing *the* re module. You're importing *an* re
module, the first one that is found. In this case: your own re.py.
Rename it.
Oh... yes, that's it ; I have a file named re.py !
Ouch, sorry for this stupid question, and thank you for this evident
answer. I didn't knew that it was possible to import a module this way...
Thank you for the fast answer !
Ben
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Re: sendmail should throw an exception but does not
Clodoaldo napisał(a): I need to know if an email was refused for whatever reason, it makes no difference. The email is sent to an email address that does not exist in a foreign domain. I can see in the postfix log that the email was sent and bounced with the error code 550. The problem is that sendmail should throw an exception but it does not. And the returned dictionary is empty as if the email was accepted. d = smtpserver.sendmail(sender, recipient, m.as_string()) I guess that the error code returned by the destination mail server is not is not forwarded to the client by my mail server. Your local smtpd accepted the message for delivery, so everythong seems to be OK. Following communication takes place between mail servers, so your program has no possibility to know anything went wrong. -- Jarek Zgoda Skype: jzgoda | GTalk: [EMAIL PROTECTED] | voice: +48228430101 We read Knuth so you don't have to. (Tim Peters) -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 11:44 am, Tzury Bar Yochay [EMAIL PROTECTED] wrote: While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results Is this what you want? class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo().getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() '1.2' Best wishes, Anthony -- http://mail.python.org/mailman/listinfo/python-list
Re: sendmail should throw an exception but does not
On Tue, 25 Mar 2008 06:39:57 -0700 (PDT) Clodoaldo [EMAIL PROTECTED] wrote: I need to know if an email was refused for whatever reason, it makes no difference. The email is sent to an email address that does not exist in a foreign domain. I can see in the postfix log that the email was sent and bounced with the error code 550. That's the sendmail daemon, not your program. The problem is that sendmail should throw an exception but it does not. And the returned dictionary is empty as if the email was accepted. d = smtpserver.sendmail(sender, recipient, m.as_string()) What this does is connect to your sendmail server and submit the email for sending. The server accepts the email and queues it up as asked. No error here. I guess that the error code returned by the destination mail server is not is not forwarded to the client by my mail server. It can't. By the time it finds out that there is a problem you have already closed the connection to the sendmail server. To do what you want you have to connect to the remote server yourself. This is a more complicated operation and there are still problems. First of all, your ISP may not allow you to connect to remote mail servers. Second, some [broken] mail servers will accept your email and only check and bounce after you have disconnected. I'm not sure what you are trying to do but you may want to consider using an Error-to: header that points to an email robot and manage bounces asynchronously. -- D'Arcy J.M. Cain [EMAIL PROTECTED] | Democracy is three wolves http://www.druid.net/darcy/| and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. -- http://mail.python.org/mailman/listinfo/python-list
Re: About reading Python code
On 2008-03-18, sturlamolden [EMAIL PROTECTED] wrote: First, I recommend that you write readable code! Don't use Python as if you're entering the obfuscated C contest. Two particularly important points: * Comments are always helpful to the reader. It would be nice if this was the case! I once saw a preogram where a line of code like this: foo++; Would be annotated with a comment like this: // /* */ /* Increment foo*/ /* */ // This comment was worse than useless, because it (and others like it) took up space that distracted from the information-containing parts of the code. -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 4:03 pm, Anthony [EMAIL PROTECTED] wrote: On Mar 25, 11:44 am, Tzury Bar Yochay [EMAIL PROTECTED] wrote: While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results Is this what you want? class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo().getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() '1.2' Best wishes, Anthony I wish it was that simple but 'a = Foo().getid()' is actually creating a new instance of Foo whereas I want the data of the Foo instanced by __init__ of FooSon(). what I am actually trying to do is to build a set of classes which handle different type of binary messages coming from the network. a base message which handles its basic data parts (src, dst, etc.) and extending it per message type. thus I looked for a way to get the child calling super for parsing the super's prats and then having the child parsing its additional details. -- http://mail.python.org/mailman/listinfo/python-list
any good g.a.'s?
Any good genetic algorithms involving you-split, i-pick? genetic algorithms involving you-split, i-pick returned 6 results. So, people: -- http://mail.python.org/mailman/listinfo/python-list
Re: Outlook 2003 and Python
cuordileone wrote: Good Day. I woul like to ask you if it is possible to make a program in python that move the email messages that I had received in outlook 2003, to a specific folder, accoding to the sender's name: Es: [EMAIL PROTECTED] -- folder Martin. Thanks. Riccardo. You could, but it is much easier to just use built in tools (from Outlook help): Automatically move messages from a certain person Select a message from the person whose messages you want to automatically move. On the Tools menu, click Organize. In the second bulleted item, click the options you want. To choose a folder, click the arrow next to the Into list. Click Create. Note To create more complex rules for organizing items, you can also use the Rules and Alerts dialog box on the Tools menu. -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: sendmail should throw an exception but does not
2008/3/25, D'Arcy J.M. Cain [EMAIL PROTECTED]: On Tue, 25 Mar 2008 06:39:57 -0700 (PDT) Clodoaldo [EMAIL PROTECTED] wrote: I need to know if an email was refused for whatever reason, it makes no difference. The email is sent to an email address that does not exist in a foreign domain. I can see in the postfix log that the email was sent and bounced with the error code 550. That's the sendmail daemon, not your program. The problem is that sendmail should throw an exception but it does not. And the returned dictionary is empty as if the email was accepted. d = smtpserver.sendmail(sender, recipient, m.as_string()) What this does is connect to your sendmail server and submit the email for sending. The server accepts the email and queues it up as asked. No error here. I guess that the error code returned by the destination mail server is not is not forwarded to the client by my mail server. It can't. By the time it finds out that there is a problem you have already closed the connection to the sendmail server. To do what you want you have to connect to the remote server yourself. This is a more complicated operation and there are still problems. First of all, your ISP may not allow you to connect to remote mail servers. Second, some [broken] mail servers will accept your email and only check and bounce after you have disconnected. I'm not sure what you are trying to do but you may want to consider using an Error-to: header that points to an email robot and manage bounces asynchronously. Thanks for the objective answer. I'm now reconnected to reality. The problem i'm trying to solve is to check if an email address is valid. That email address is used to register in a site. I'm already doing the confirmation email path. The confirmation email prevents someone to register with a forged email but also prevents those who simple don't know exactly what their email is. Yes the email must be typed twice but still people get the email wrong just because they don't know for sure what it is. I can see it clearly when they mistype the correct domain. It happens that atracting those people is expensive and i can't afford to loose them. Thats why i would like to check the email at registration time. Also those who try to register with a forged email would learn that the email must be confirmed and could then issue a correct email. I guess it is not possible or is too complex because i never saw it done. Regards, Clodoaldo Pinto Neto -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading new mail from outlook
Tim Golden wrote: SPJ wrote: I am trying to create new tickets in the ticketing system using python. When I receive new email from a particular address, I have to trigger the python script and parse the mail in required format. The main hurdle here is, how to invoke the script on arrival of new mail? I checked the outlook settings and found that it supports only microsoft VB script and Jscript. Is there any other way? I mean, if I make a daemon, how will it be notified of new mail? Is there any python module that does this? I am not sure if this is the right place to ask this, since it is also a microsoft related question. But any help is appreciated. Outlook does have some events in its automation interface (which you can handle from within Python by using win32com.client.DispatchWithEvents) but if an immediate response weren't critical it's probably slightly easier to schedule a job to interrogate the mailbox every so often and harvest any new emails. Depends on your particular need. TJG Best way I can think of is to get a copy of SpamBayes source code and see how it is done there. Much easier to look at something that already looks at new messages as they arrive in the Inbox than to try to figure it out. http://spambayes.sourceforge.net/windows.html -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: Does python hate cathy?
In article [EMAIL PROTECTED], Patrick Mullen [EMAIL PROTECTED] wrote: Then again, I can count the number of times I have ever needed __del__ with no fingers (never used it!). Still, quite interesting to explore. I used it once, for an object that had a doubly-linked list. The __del__() method walked the list, setting all the elements' prev/next pointers to None to make sure the elements of the list would get garbage-collected. -- -Ed Falk, [EMAIL PROTECTED] http://thespamdiaries.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
dynamically created names / simple problem
Hello all, I'm fairly green to python and programming, so please go gently. The following code for display in secondary: self.(so_active_+display) = wx.CheckBox(self.so_panel, -1, checkbox_2) Errors, because of the apparent nastyness at the beginning. What I'm trying to do is loop through a list and create uniquely named wx widgets based on the list values. Obviously the above doesn't work, and is probably naughty - what's a good approach for achieving this? Many thanks, Jules -- http://mail.python.org/mailman/listinfo/python-list
Re: sendmail should throw an exception but does not
Clodoaldo napisał(a): That email address is used to register in a site. I'm already doing the confirmation email path. The confirmation email prevents someone to register with a forged email but also prevents those who simple don't know exactly what their email is. Yes the email must be typed twice but still people get the email wrong just because they don't know for sure what it is. I can see it clearly when they mistype the correct domain. It happens that atracting those people is expensive and i can't afford to loose them. Thats why i would like to check the email at registration time. Also those who try to register with a forged email would learn that the email must be confirmed and could then issue a correct email. I guess it is not possible or is too complex because i never saw it done. Good guess -- this is not possible until you (or your server) actually send an email. You can send a big THANKYOU to spammers, because their activity caused nearly all mail server admins to disable VRFY command that is supposed to do what you need. -- Jarek Zgoda Skype: jzgoda | GTalk: [EMAIL PROTECTED] | voice: +48228430101 We read Knuth so you don't have to. (Tim Peters) -- http://mail.python.org/mailman/listinfo/python-list
Re: dynamically created names / simple problem
Jules Stevenson wrote: Hello all, I'm fairly green to python and programming, so please go gently. The following code for display in secondary: self.(so_active_+display) = wx.CheckBox(self.so_panel, -1, checkbox_2) Errors, because of the apparent nastyness at the beginning. What I’m trying to do is loop through a list and create uniquely named wx widgets based on the list values. Obviously the above doesn’t work, and is probably naughty – what’s a good approach for achieving this? Hi, What you're looking for is the builtin function setattr: http://docs.python.org/lib/built-in-funcs.html#l2h-66 Your snippet would be written (not tested): for display in secondary: setattr(self, so_active_+display, wx.CheckBox(self.so_panel, -1, checkbox_2)) RB -- http://mail.python.org/mailman/listinfo/python-list
Re: dynamically created names / simple problem
Robert Bossy wrote: Jules Stevenson wrote: Hello all, I'm fairly green to python and programming, so please go gently. The following code for display in secondary: self.(so_active_+display) = wx.CheckBox(self.so_panel, -1, checkbox_2) Errors, because of the apparent nastyness at the beginning. What I’m trying to do is loop through a list and create uniquely named wx widgets based on the list values. Obviously the above doesn’t work, and is probably naughty – what’s a good approach for achieving this? Hi, What you're looking for is the builtin function setattr: http://docs.python.org/lib/built-in-funcs.html#l2h-66 Your snippet would be written (not tested): for display in secondary: setattr(self, so_active_+display, wx.CheckBox(self.so_panel, -1, checkbox_2)) Damn! The indentation didn't came out right, it should be: for display in secondary: setattr(self, so_active_+display, wx.CheckBox(self.so_panel, -1,checkbox_2)) RB -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help calling a proprietary C DLL from Python
On Mar 25, 2:02 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote: On Mon, 24 Mar 2008 15:21:11 -0700 (PDT), Craig [EMAIL PROTECTED] declaimed the following in comp.lang.python: And this is what I got: VmxGet test - looking for valid record... Before -PriKey = 0x0044F56C,SecKey = 0x0044F534 ci_PriKey = 0x0044F56C, ci_SecKey = 0x0044F534 After -PriKey = 0x0044F56C,SecKey = 0x0044F534 ci_PriKey = 0x0043D49C, ci_SecKey = 0x0043D484 So VmxGet() DID allocate new BSTR structures. It might be interesting to extract the length data that is part of the BSTR and compare. ctypes.string_at(PriKey - 4, 4) #if I recall the arguments vs ctypes.string_at(ci_PriKey - 4, 4) If the second (after conversion to integer) is larger than the former, it could mean that the routine checks what is passed in to ensure enough storage space, and if it won't fit, does the allocation. If it were always going to do an allocation, there would have been no excuse for /reading/ the passed in structure length. -- WulfraedDennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ I changed to the following to followup on the length data: printf (Before -PriKey = 0x%8.8X,SecKey = 0x%8.8X\n, PriKey, SecKey) printf ( ci_PriKey = 0x%8.8X, ci_SecKey = 0x%8.8X\n, ci_PriKey.value, ci_SecKey.value) res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option), byref(c_void_p(SrchKey)), byref(ci_SecKey), byref(ci_PriKey), TypeDef ) printf (After -PriKey = 0x%8.8X,SecKey = 0x%8.8X\n, PriKey, SecKey) printf (ci_PriKey = 0x%8.8X, ci_SecKey = 0x%8.8X\n, ci_PriKey.value, ci_SecKey.value) print ord(string_at(PriKey - 4, 1)), ord(string_at(PriKey - 3, 1)), ord(string_at(PriKey - 2, 1)), ord(string_at(PriKey - 1, 1)) print ord(string_at(ci_PriKey.value - 4, 1)), ord(string_at(ci_PriKey.value - 3, 1)), ord(string_at(ci_PriKey.value - 2, 1)), ord(string_at(ci_PriKey.value - 1, 1)) And, got: Before -PriKey = 0x0028B6FC,SecKey = 0x0028B6C4 ci_PriKey = 0x0028B6FC, ci_SecKey = 0x0028B6C4 After -PriKey = 0x0028B6FC,SecKey = 0x0028B6C4 ci_PriKey = 0x0027D284, ci_SecKey = 0x0027D26C 41 0 0 0 7 0 0 0 Which makes sense for two reasons: 1. It would only return the non-space-filled part of the returned key. 2. At least from VB6, the variable does not even have to be used before the call. I have gone on to design a function for printing the contents as fields in a Structure. def DCOD_Print(): temp = unpack(DecoderRecordFormat, TypeDef.raw) DCOD = DecoderRecord(temp[0], temp[1], temp[2], temp[3], temp[4], temp[5]) printDistID = \x22%s\x22 % DCOD.DistID print YearCode = \x22%s\x22 % DCOD.YearCode print AccountType = \x22%s\x22 % DCOD.AccountType print AccountNumber = \x22%s\x22 % DCOD.AccountNumber print Description = \x22%s\x22 % DCOD.Description printUnused = \x22%s\x22 % DCOD.Unused return class DecoderRecord(Structure): _fields_ = [ (DistID, c_char_p), (YearCode, c_char_p), (AccountType, c_char), (AccountNumber, c_char_p), (Description, c_char_p), (Unused, c_char_p) ] DecoderRecordFormat = 3s4ss32s32s56s Then, a simple: print DCOD_Print() parses the record into its fields, and displays those fields. In other files, some of those fields are VB6 currency types, which have been described as 8-byte integers with an implied 4 decimal places (which I guess would be __int64 or c_longlong and then divide by 10,000, or simply put a decimal point 4 away from the end). Any ideas on how best to process this type of data in Python? -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 1:34 pm, Tzury Bar Yochay [EMAIL PROTECTED] wrote: Rather than use Foo.bar(), use this syntax to call methods of the super class: super(ParentClass, self).method() Hi Jeff, here is the nw version which cause an error class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(Foo, self).getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() Traceback (most recent call last): File a.py, line 19, in module FooSon().getid() File a.py, line 14, in getid a = super(Foo, self).getid() AttributeError: 'super' object has no attribute 'getid' Use the child class when calling super: -- class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(FooSon, self).getid() b = self.id return '%d.%d' % (a,b) print FooSon().getid() -- G. -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading new mail from outlook using Python
Thanks... I could access the folders in outlook express using the COM interface. Now I am stuck with how to read to a file only new mails. Anyone knows how to achieve this? Thanks SPJ --- On Tue, 3/25/08, Pete Stapley [EMAIL PROTECTED] wrote: From: Pete Stapley [EMAIL PROTECTED] Subject: Re: Reading new mail from outlook using Python To: [EMAIL PROTECTED] Cc: python-list@python.org Date: Tuesday, March 25, 2008, 2:58 AM Well on a FreeBSD/Unix system you can use the .forward to pipe the incoming mail for a user to a program. Below is the contents of my .forward that invokes procmail. |/usr/local/bin/procmail -m /path/to/conf/.procmailrc So I imagine you could do something like this in a .forward. |/path/myprogram.py SPJ wrote: Hi, I am trying to create new tickets in the ticketing system using python. When I receive new email from a particular address, I have to trigger the python script and parse the mail in required format. The main hurdle here is, how to invoke the script on arrival of new mail? I checked the outlook settings and found that it supports only microsoft VB script and Jscript. Is there any other way? I mean, if I make a daemon, how will it be notified of new mail? Is there any python module that does this? I am not sure if this is the right place to ask this, since it is also a microsoft related question. But any help is appreciated. Thanks, SPJ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://us.rd.yahoo.com/evt=51733/*http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ%20 Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ -- http://mail.python.org/mailman/listinfo/python-list
Re: Breaking the barrier of a broken paradigm... part 1
This code is SO *CUTE*! I wish there was a font with little hearts to dot the 'i's with, then it would be PERFECT! -- http://mail.python.org/mailman/listinfo/python-list
RE: dynamically created names / simple problem
Brilliant. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 2:31 pm, Tzury Bar Yochay [EMAIL PROTECTED] wrote: I wish it was that simple but 'a = Foo().getid()' is actually creating a new instance of Foo whereas I want the data of the Foo instanced by __init__ of FooSon(). I don't think Foo.__init__(self) creates an instance of the Foo class. If you want FooSon to create an instance of Foo, try: class FooSon(Foo): def __init__(self): self.foo = Foo() self.id = 2 def getid(self): a = self.foo.getid() b = self.id return '%d.%d' % (a,b) FooSon().getid() '1.2' Or change self.id in Foo to something else, e.g., self.id_foo. Does that help? Anthony -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gerard Flanagan wrote: Use the child class when calling super: -- class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(FooSon, self).getid() b = self.id return '%d.%d' % (a,b) print FooSon().getid() -- That still doesn't do what he's trying to do. The problem here is that you only have one instance. self refers to it, so when you set self.id in the super you have set the instance's id to 1. When you set it to 2 after calling the super's __init__ you are now setting the *same* variable to a 2. Basically, you can't do what you are trying to do without using a different variable, or keeping track of a separate instance for the super instead of sub-classing it. Brian - -- - ---[Office 71.7F]--[Outside 33.2F]--[Server 99.5F]--[Coaster 68.7F]--- - ---[ KLAHOWYA WSF (366773110) @ 47 31.2076 -122 27.2249 ]--- Software, Linux, Microcontrollers http://www.brianlane.com AIS Parser SDKhttp://www.aisparser.com Movie Landmarks Search Enginehttp://www.movielandmarks.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (Darwin) Comment: Remember Lexington Green! iD8DBQFH6RwcIftj/pcSws0RArdpAJ9pCMjrkpBarHyQsl6hXEifj52giwCfXfKa Ot/1a+NNOLN5LA4mxBtfpis= =Yacu -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
Creating dynamic objects with dynamic constructor args
I'd like to create objects on the fly from a pointer to the class using: instance = klass() But I need to be able to pass in variables to the __init__ method. I can recover the arguments using the inspect.argspec, but how do I call __init__ with a list of arguments and have them unpacked to the argument list rather than passed as a single object? ie. class T: def __init__(self, foo, bar): self.foo = foo self.bar = bar argspec = inspect.argspec(T.__init__) args = (1, 2) ??? how do you call T(args)? Thanks. Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: Time module is not behaving.
jjlofaro wrote: Hi I'm just getting myself going again on Python and would appreciate any help. My install of Python seems to have some difficulty loading and using the time module in a script. Strange thing is that if I start another instance of Python I can type in my program manually/interactively and it works. The version of Python I am using is... * Python 2.5.1 (r251:54863, Mar 7 2008, 04:10:12) [GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2* Installed on a Ubuntu 7.10 workstation. Here's my little program [EMAIL PROTECTED]:~/tmp$ more time.py import time * Right there is the problem. Your program, named time.py, is hiding the Python supplied module. So that import of time is finding and re-importing itself. Rename your script to something that won't shadow a Python library module. Gary Herron *print time.time()* And this is what happens when I run it [EMAIL PROTECTED]:~/tmp$ python time.py Traceback (most recent call last): File time.py, line 1, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable Error in sys.excepthook: Traceback (most recent call last): File /var/lib/python-support/python2.5/apport_python_hook.py, line 38, in apport_excepthook from apport.fileutils import likely_packaged File /var/lib/python-support/python2.5/apport/__init__.py, line 1, in module from apport.report import Report File /var/lib/python-support/python2.5/apport/report.py, line 14, in module import subprocess, tempfile, os.path, urllib, re, pwd, grp, os, sys File /usr/lib/python2.5/urllib.py, line 28, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable Original exception was: Traceback (most recent call last): File time.py, line 1, in module import time File /home/jeff/tmp/time.py, line 2, in module print time.time() TypeError: 'module' object is not callable [EMAIL PROTECTED]:~/tmp$ * Any hints or tips appreciated. Jeff. -- http://mail.python.org/mailman/listinfo/python-list
Re: any good g.a.'s?
Any good genetic algorithms involving you-split, i-pick? I've always heard it as you divide, I decide... That said, I'm not sure how that applies in a GA world. It's been a while since I've done any coding with GAs, but I don't recall any facets related to the You Divide, I Decide problem. It sounds like a simple optimization of equality, which would be a normal use of a GA. This would apply for both the division and the decision, depending on which side the GA is (the you or the I) or two diff. GAs can be on either side of the process. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: StringIO + unicode
En Tue, 25 Mar 2008 06:26:04 -0300, Laszlo Nagy [EMAIL PROTECTED]
escribió:
Is there a standard in-memory file interface for reading/writting
unicode stings? Something like StringIO.
E.g. this would be possible:
- create UnicodeStringIO
- write unicode strings into it
- wite data (binary) string of UnicodeStringIO into a file ('wb' mode)
No. Files contain bytes, not characters; you have to encode the Unicode
object when writing to a file (or StringIO object).
As Diez suggested, use the codecs classes:
py import codecs
py from StringIO import StringIO
py orig_file = StringIO()
py wrapped_file = codecs.getwriter('hex')(orig_file)
py wrapped_file.write(Hello world!)
py wrapped_file.getvalue()
48656c6c6f20776f726c6421
See http://docs.python.org/lib/stream-writer-objects.html
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: Reading new mail from outlook using Python
SPJ wrote: Thanks... I could access the folders in outlook express using the COM interface. Now I am stuck with how to read to a file only new mails. Well, this Google query: http://www.google.co.uk/search?hl=enq=OUTLOOK.application+unread+messages seems to indicate some useful hits. (But perhaps you knew that?) TJG -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating dynamic objects with dynamic constructor args
you can call a function with arglist like this: def dummy(a, b, c): print a + b, c args = [1, 2, hello] dummy(*args) On Tue, Mar 25, 2008 at 5:38 PM, [EMAIL PROTECTED] wrote: I'd like to create objects on the fly from a pointer to the class using: instance = klass() But I need to be able to pass in variables to the __init__ method. I can recover the arguments using the inspect.argspec, but how do I call __init__ with a list of arguments and have them unpacked to the argument list rather than passed as a single object? ie. class T: def __init__(self, foo, bar): self.foo = foo self.bar = bar argspec = inspect.argspec(T.__init__) args = (1, 2) ??? how do you call T(args)? Thanks. Greg -- http://mail.python.org/mailman/listinfo/python-list -- Furkan Kuru -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Tzury Bar Yochay [EMAIL PROTECTED] writes: given two classes: class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = Foo.getid() b = self.id return '%d.%d' % (a,b) Try this: class Foo(object): def __init__(self): self.__id = 1 def getid(self): return self.__id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.__id = 2 def getid(self): a = Foo.getid(self) b = self.__id return '%d.%d' % (a,b) FooSon().getid() '1.2' While my intention is to get 1.2 I get 2.2 I would like to know what would be the right way to yield the expected results Either use the above private fields, or emulate them yourself by renaming self.id to self.foo_id or self.foo_son_id, and exposing those in the class. Or you can have a class-specific dict in each instance, and so on. -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Brian Lane [EMAIL PROTECTED] writes: Basically, you can't do what you are trying to do without using a different variable, ...or abusing the __foo private identifier trick. -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Anthony wrote: On Mar 25, 2:31 pm, Tzury Bar Yochay [EMAIL PROTECTED] wrote: I wish it was that simple but 'a = Foo().getid()' is actually creating a new instance of Foo whereas I want the data of the Foo instanced by __init__ of FooSon(). I don't think Foo.__init__(self) creates an instance of the Foo class. If you want FooSon to create an instance of Foo, try: You wrote: a = Foo().getid() Which indeed creates a *new* Foo-instance. So it's of no use to the OP. Of course Foo.method(self) calls that method without creating a new instance, which is the behavior one uses when invoking the constructor of Foo inside FooSon.__init__. But that doesn't make your example any better. Diez -- http://mail.python.org/mailman/listinfo/python-list
Finding Will Ware
I am looking for Will Ware, but his website (willware.net) is not responding, so I'm guessing at a email addresses for him. Please let me know where he can be reached. (Will, this is regarding Sue Bauter, who was a close friend of mine at ISU in '72. Please reply so I can correspond with you about Sue and the news about her on your website.) Thank you -- Bill Horst ([EMAIL PROTECTED]) -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating dynamic objects with dynamic constructor args
[EMAIL PROTECTED] wrote:
I'd like to create objects on the fly from a pointer to the class
using: instance = klass() But I need to be able to pass in variables
to the __init__ method. I can recover the arguments using the
inspect.argspec, but how do I call __init__ with a list of arguments
and have them unpacked to the argument list rather than passed as a
single object?
ie. class T:
def __init__(self, foo, bar):
self.foo = foo
self.bar = bar
argspec = inspect.argspec(T.__init__)
args = (1, 2)
??? how do you call T(args)?
The star operator allows you to do this:
T(*args)
You also can use dict for keyword arguments using the double-star operator:
class T(object):
def __init__(self, foo=None, bar=None):
self.foo = foo
self.bar = bar
kwargs = {'bar': 1, 'foo': 2}
T(**kwargs)
RB
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Re: Outlook 2003 and Python
On Mar 25, 3:52 pm, Larry Bates [EMAIL PROTECTED] wrote: cuordileone wrote: Good Day. I woul like to ask you if it is possible to make a program in python that move the email messages that I had received in outlook 2003, to a specific folder, accoding to the sender's name: Es: [EMAIL PROTECTED] -- folder Martin. Thanks. Riccardo. You could, but it is much easier to just use built in tools (from Outlook help): Automatically move messages from a certain person Select a message from the person whose messages you want to automatically move. On the Tools menu, click Organize. In the second bulleted item, click the options you want. To choose a folder, click the arrow next to the Into list. Click Create. Note To create more complex rules for organizing items, you can also use the Rules and Alerts dialog box on the Tools menu. -Larry Thanks a lot, Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: importing a csv file as a Numeric array
En Tue, 25 Mar 2008 06:46:57 -0300, Rahul [EMAIL PROTECTED] escribió: What's a good way of importing a csv text file of floats into a Numeric array? I tried the csv module and it seems to work well so long as I've ints. Does anyone have any suggestions / snippets that work to import a csv file of floats into a Numeric array? See the Cookbook at http://www.scipy.org/Cookbook/InputOutput - but I don't know how much of that is applicable to the old Numeric library. Robert Kern posted a fairly generic approach in this thread http://groups.google.com/group/comp.lang.python/browse_thread/thread/7345c364cae59127/ -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Tue, 25 Mar 2008 16:37:00 +0100, Brian Lane [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gerard Flanagan wrote: Use the child class when calling super: -- class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(FooSon, self).getid() b = self.id return '%d.%d' % (a,b) print FooSon().getid() -- That still doesn't do what he's trying to do. The problem here is that you only have one instance. self refers to it, so when you set self.id in the super you have set the instance's id to 1. When you set it to 2 after calling the super's __init__ you are now setting the *same* variable to a 2. Basically, you can't do what you are trying to do without using a different variable, or keeping track of a separate instance for the super instead of sub-classing it. If for any reason it's better to have the same attribute name, it might be a case where a pseudo-private attribute - i.e. prefixed with __ - can be handy: -- class Foo(object): def __init__(self): self.__id = 1 def getid(self): return self.__id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.__id = 2 def getid(self): a = super(FooSon, self).getid() b = self.__id return '%d.%d' % (a,b) print FooSon().getid() -- For an explanation, see here: http://docs.python.org/ref/atom-identifiers.html HTH -- python -c print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-']) -- http://mail.python.org/mailman/listinfo/python-list
Files, directories and imports - relative to the current directory only
Hello, group.
I can only read files and import modules that are in the same
directory
as the one my script is. Here is a test script (path.py):
import os
import uno # some module I wrote
print list(os.walk('~/hacking/python'))
f = open('~/read/foo.txt')
print f.read()
And here is the output:
Traceback (most recent call last):
File path.py, line 2, in module
import uno
ImportError: No module named uno
If I comment that import, the output becomes this:
[]
Traceback (most recent call last):
File path.py, line 4, in module
f = open('~/read/foo.txt')
IOError: [Errno 2] No such file or directory: '~/read/foo.txt'
(Notice the empty list at the beginning, that would be the output of
os.walk().)
I have added this line to my .bashrc:
export PYTHONPATH=$PYTHONPATH:~/hacking/python
I thought that by doing so all the scripts found in that directory and
all it's children would be available for import, but that doesn't seem
to be the case. As for the other problems, I have no idea.
So, what's wrong here? Maybe there's something I haven't set up?
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Re: Breaking the barrier of a broken paradigm... part 1
En Tue, 25 Mar 2008 07:44:59 -0300, john s. [EMAIL PROTECTED] escribió: for line in open(/etc/passwd): user, _pwd = line.split(:) ^- Ok this one here we are taking a string spliting it into to variables... user gets one (the first) and _pwd gets to hold the leftovers? No; if the line contains more than a single : that code will fail. user, remainder = line.split(:, 1) With Python 3.0 you could write: user, _pwd, *other = line.split(:) but limiting the number of splits is more efficient if you are not interested in the remaining list. A more interesting case is: a, b, *other, c = line.split(:) to obtain the first, second and last items. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: A roadmap for ctypes wrapping?
In article [EMAIL PROTECTED], Diez B. Roggisch [EMAIL PROTECTED] wrote: Alaric Haag schrieb: Hi all, stuff deleted == Can anyone with some wrapping experience add/modify/enhance the above? Use gccxml to gather the typedefs. And look at Gary Bishop's site to see some cool helper classes/functions for dealing with ctypes. Diez Thanks for the pointers! I had hoped others might offer opinions as well, but the cross-post on the ctypes list is idle. Thanks again! Alaric -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
On Mar 25, 4:37 pm, Brian Lane [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gerard Flanagan wrote: Use the child class when calling super: -- class Foo(object): def __init__(self): self.id = 1 def getid(self): return self.id class FooSon(Foo): def __init__(self): Foo.__init__(self) self.id = 2 def getid(self): a = super(FooSon, self).getid() b = self.id return '%d.%d' % (a,b) print FooSon().getid() -- That still doesn't do what he's trying to do. Ah, I see. Maybe something like the following then? -- class Foo(object): def __init__(self): self._id = [1] def getid(self): return '.'.join(str(i) for i in self._id) class FooSon(Foo): def __init__(self): Foo.__init__(self) self._id.append(2) print FooSon().getid() -- G. -- http://mail.python.org/mailman/listinfo/python-list
Re: Breaking the barrier of a broken paradigm... part 1
john s. a écrit :
On Mar 24, 9:39 pm, Ryan Ginstrom [EMAIL PROTECTED] wrote:
On Behalf Of john s.
import os, sys, string, copy, getopt, linecache
from traceback import format_exception
#The file we read in...
fileHandle = /etc/passwd
srcFile = open(fileHandle,'r')
srcList = srcFile.readlines()
#yah, a for loop that iterates through the file of lines
for i in srcList:
strUsr = string.split(i,:)
Erroneous hungarian notation is Bad(tm). And FWIW, the convention is to
use all_lower for variable names.
(snip consideration about using str.methods instead of string functions
etc...)
How about for starters:
import os
for line in open(/etc/passwd):
NB : this idiom relies on the VM automatically closing files, which is
not garanteed on each and every implementation (IIRC, jython won't do
it). This is ok for QD throwaway scripts targeting CPython, but should
not go into production code.
user, _pwd = line.split(:)
^- Ok this one here we are taking a string spliting it
into to variables...
user gets one (the first) and _pwd gets to hold the
leftovers?
Quite. user gets the first, _pwd gets the second. If you have more than
2 fields (IOW : more than one ':') in the line, it will raise.
If you want to make sure this will still work with more than 2 fields,
you can use the optional max_split arg:
user, rest = line.split(':', 1)
user_home = os.path.join(/expirt/home, user)
try:
os.makedirs('usrHome' )
except Exception, e:
Better to be as specific as possible wrt/ exceptions you want to handle.
Remember that some exceptions are better left alone (hint: sys.exit
works by raising an exception...)
print e
if os.path.exists(user_home):
^- are(n't) exists and os.path.isadir
interchangable?
They're not. If you want to be bulletproof, you'll have to use
os.path.isdir *and* handle the case where user_home exists and is not a
directory.
HTH
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Re: Issues with Python + Batch File
En Tue, 25 Mar 2008 08:55:12 -0300, tarun [EMAIL PROTECTED] escribió: I've a batch file which invoks a python file. The python code in the file brings up a GUI. The GUI is of a test tool which can execute scripts. I tried using the following 2 sample of code for my batch file: * (1) (2)* D:\opengui.py D:\opengui.py goto:end goto:end :end :end EXIT TASKKILL /IM C:\WINDOWS\system32\cmd.exe Double clicking on the batch file brings up a DOS BOX which opens up the GUI. On Closing the GUI, the DOS BOX both get closed. But if I close the GUI when a test is under execution, the GUI gets closed but the DOS BOX still remains open. I want to some how close the DOS BOX when the GUI is closed. Either rename the script opengui.pyw or start it explicitely using: pythonw d:\opengui.py pythonw.exe doesn't create a console (what you call a DOS BOX). -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Hi, I'm not sure what you're trying to actually achieve, but it seems that you want an identificator for classes, not for instances. In this case, setting the id should be kept out of __init__ since it is an instance initializer: make id static and thus getid() a classmethod. Furthermore, if you have several Foo subclasses and subsubclasses, etc. and still want to use the same identificator scheme, the getid() method would better be defined once for ever in Foo. I propose you the following: code class Foo(object): id = 1 def getid(cls): if cls == Foo: return str(cls.id) return '%s.%d' % (cls.__bases__[0].getid(), cls.id) # get the parent id and append its own id getid = classmethod(getid) class FooSon(Foo): id = 2 class Bar(Foo): id = 3 class Toto(Bar): id = 1 # Show me that this works for cls in [Foo, FooSon, Bar, Toto]: inst = cls() print '%s id: %s\nalso can getid from an instance: %s\n' % (cls.__name__, cls.getid(), inst.getid()) /code One advantage of this approach is that you don't have to redefine the getid() method for each Foo child and descendent. Unfortunately, the cls.__bases__[0] part makes getid() to work if and only if the first base class is Foo or a subclass of Foo. You're not using multiple inheritance, are you? RB -- http://mail.python.org/mailman/listinfo/python-list
Re: Beautiful Soup Looping Extraction Question
Paul - you are very right. I am back to the drawing board. Tess -- http://mail.python.org/mailman/listinfo/python-list
Re: Does python hate cathy?
On Tue, 25 Mar 2008 14:58:51 +, Edward A. Falk wrote: In article [EMAIL PROTECTED], Patrick Mullen [EMAIL PROTECTED] wrote: Then again, I can count the number of times I have ever needed __del__ with no fingers (never used it!). Still, quite interesting to explore. I used it once, for an object that had a doubly-linked list. The __del__() method walked the list, setting all the elements' prev/next pointers to None to make sure the elements of the list would get garbage-collected. Without the `__del__()` the elements would get garbage collected just fine. If you don't want to wait until the garbage collector in CPython detects the cycle, you can use `weakref`\s for one of the two pointers in each element. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
how to dynamically create class methods ?
Hello, Here is some pseudo-code that hopefully illustrates what I want to do: records = list(...) for record in records: new_fcn = define_a function_for(record) instance = my_new_class_instance() setattr(instance, 'myfcn', new_fcn) instance.execute() # instance.execute() calls instance.myfcn(*args) I have looked at some of the functions in the *new* module and new.code(...), new.function(...), and new.instancemethod(...) appear to do what I want, but I do not know how to use new.code() and new.function() -- specifically what its *global* parameter should be. I was not able to find helpful information using Google. Thanks for any suggestions on how to approach this. -- jv -- http://mail.python.org/mailman/listinfo/python-list
Re: Does python hate cathy?
Marc 'BlackJack' Rintsch [EMAIL PROTECTED] writes: On Tue, 25 Mar 2008 14:58:51 +, Edward A. Falk wrote: In article [EMAIL PROTECTED], Patrick Mullen [EMAIL PROTECTED] wrote: Then again, I can count the number of times I have ever needed __del__ with no fingers (never used it!). Still, quite interesting to explore. I used it once, for an object that had a doubly-linked list. The __del__() method walked the list, setting all the elements' prev/next pointers to None to make sure the elements of the list would get garbage-collected. Without the `__del__()` the elements would get garbage collected just fine. It gets even worse than that: the __del__ method actually *prevents* objects that participate in cycles from getting garbage-collected. Python's GC doesn't deallocate objects that define __del__. (The way to handle those is to grep for them in gc.garbage, break the cycles in a way that works for the application -- e.g. by removing the prev and next references -- and finally del gc.garbage[:].) -- http://mail.python.org/mailman/listinfo/python-list
Re: Files, directories and imports - relative to the current directory only
ptn wrote:
Traceback (most recent call last):
File path.py, line 4, in module
f = open('~/read/foo.txt')
IOError: [Errno 2] No such file or
directory: '~/read/foo.txt'
[...]
So, what's wrong here? Maybe there's something I haven't set up?
Simple: the directory ~ doesn't exist. Since you're not using a
shell (but direct file access) there is no tilde expansion, and ~
is treated as a regular file name. If you need to get the home
directory refer to the environment variable HOME
(os.environ[HOME]). There even may be a shorter way, please refer
to the os module docs.
Regards,
Björn
--
BOFH excuse #139:
UBNC (user brain not connected)
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Re: Inheritance question
On Mar 25, 12:01 pm, Robert Bossy [EMAIL PROTECTED] wrote: Hi, I'm not sure what you're trying to actually achieve, but it seems that you want an identificator for classes, not for instances. In this case, setting the id should be kept out of __init__ since it is an instance initializer: make id static and thus getid() a classmethod. Furthermore, if you have several Foo subclasses and subsubclasses, etc. and still want to use the same identificator scheme, the getid() method would better be defined once for ever in Foo. I propose you the following: code class Foo(object): id = 1 def getid(cls): if cls == Foo: return str(cls.id) return '%s.%d' % (cls.__bases__[0].getid(), cls.id) # get the parent id and append its own id getid = classmethod(getid) class FooSon(Foo): id = 2 class Bar(Foo): id = 3 class Toto(Bar): id = 1 # Show me that this works for cls in [Foo, FooSon, Bar, Toto]: inst = cls() print '%s id: %s\n also can getid from an instance: %s\n' % (cls.__name__, cls.getid(), inst.getid()) /code One advantage of this approach is that you don't have to redefine the getid() method for each Foo child and descendent. Unfortunately, the cls.__bases__[0] part makes getid() to work if and only if the first base class is Foo or a subclass of Foo. You're not using multiple inheritance, are you? RB It is clear there are always two vectors is programmer thoughtspace: class and instance, and that they are orthogonal, and even orthonormal. Every (human-thought native) data structure can be expressed as a sum of two vectors, scalar * unit, scalar * unit in a particular order (cf. Gram-Schmidt), or a tuple. Writing code is simply the specification of scalar and scalar. Clearly the alphabet-space of programs ( symbol* ) contains (improper) the alphabet-space of Python programs, (which) contains (proper) the token-space of Python programs, (which) contains (proper) the grammar- space of Python programs, yet but here we lose thought; do you think in Python? Python ignores some subset of distinctions we make in thought, and we ignore some subset of distinctions Python require (w.c.)s. How do we effectively communicate with it? Order is a non-commutative relation. (a,b) did come from reality, but does not fulfill Rab; conclude (a,b) did not come from reality; and R is a truth relation. /lemma Conclude Rab is a scalar. Is a gram a pound? Is it two pounds? Newton's zero-find method finds b given a and Rab. (Expected time to zero pent). Do you think in Newton's method? Are functions scalars? '''In the mid-20th century, some mathematicians decided that writing g o f to mean first apply f, then apply g was too confusing and decided to change notations. They wrote xf for f(x) and xfg for g(f(x)). This can be more natural and seem simpler than writing functions on the left in some areas.''' - wikipedia. Does anyone know category theory or pointless topology? My point in asking, is if we can explain in a really easy way using those establishments, to Python how we think, (several symbols, what when), we would like it, assuming it likes us. To effectively communicate with Python, what does the assumption that 'we want something', that 'there's a reward' exclude? Python wants to reward programmers often enough. (Python + Usenet does!) Do we like to be frustrated? What's good for us is good for Python. What frustrates you the most? -- http://mail.python.org/mailman/listinfo/python-list
setattr what is the parent object?
I'm trying to use setattr to dynamically name and layout gui wx widgets, this is all fine and dandy until I've run up against something where I simply don't know what the object is, please see the amended **don't know** in the following code. class MyFrame2(wx.Frame): def __init__(self, *args, **kwds): blah blah blah __do_layout(mayaVars) def __do_layout(self, mayaVars): main_boxSizer = wx.BoxSizer(wx.VERTICAL) for pDisplay in range(len(mayaVars.primary)): setattr=(**don't know**,r_gridBagSizer_+mayaVars.primary[pDisplay], wx.GridBagSizer(vgap=0, hgap=0)) Without all the dynamic gumpf, the statmement looks like this: r_gridBagSizer = wx.GridBagSizer(vgap=0, hgap=0)) All the other UI elements are created on 'self' but the sizers don't seem to 'belong' to anything - what should I use when this is the case? Many thanks, and apologies if I'm being dense Jules -- http://mail.python.org/mailman/listinfo/python-list
Re: Inheritance question
Hi all, I would like to thank you all for all the suggestions. what I did was simply extending the super class data with data from its child using the id example, Foo.id = 1 is now = [1] and the FooSon does self.id.append(2) the system designer wanted inheritance+java and I wanted Python +Functional Programming i guess we will meet somewhere in the middle thanks again tzury -- http://mail.python.org/mailman/listinfo/python-list
Re: Beautiful Soup Looping Extraction Question
Hi,
again, not BS related, but still a solution.
Tess wrote:
Let's say I have a file that looks at file.html pasted below.
My goal is to extract all elements where the following is true: p
align=left and div align=center.
Using lxml:
from lxml import html
tree = html.parse(file.html)
for el in tree.iter():
if el.tag == 'p' and el.get('align') == 'left':
print el.tag
elif el.tag == 'div' and el.get('align') == 'center':
print el.tag
I assume that BS can do something similar, though.
Stefan
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Re: Disable resize button
On Mar 24, 5:45 pm, Francesco Bochicchio [EMAIL PROTECTED] wrote: Il Mon, 24 Mar 2008 04:38:50 -0700, myonov ha scritto: Hi! I need to disable resize button in Tkinter. I inherit the Frame class. Then in the constructor i make my buttons, labels, etc. Then I pack them and when move borders of the frame everything changes it's location and it looks really bad. How can I change that? That's my code: # -*- coding: cp1251 -*- import Tkinter class App(Tkinter.Frame): def click(self): pass def click2(self): pass def __init__(self, master=None): Tkinter.Frame.__init__(self, master, width = 700, height = 400,\ bg = #99) self.pack() # Buttons self.b1 = Tkinter.Button(self, text = uДобави Книга,\ command=self.click, font = Courier, \ fg = red) self.b2 = Tkinter.Button(self, text = uДобави читател,\ command=self.click2, font = Courier, \ fg = red) self.b1.place(relx = 0.75, rely = 0.3) self.b2.place(relx = 0.75, rely = 0.4) # Labels self.l1 = Tkinter.Label(self, font = Courier, height = 4,\ text = uИнформация, fg = #ff,\ bg = #99) self.l1.place(x = 275, y = 10) # Text Control #self.txt = Tkinter.Text(self, bg = #124456, ) # self.txt.pack() You could try including the frame in a toplevel window (e.g. passing Tkinter.Tk() as super) and then doing super.wm_resizable(None, None) A better idea would be using pack instead of place, leaving to the toolkit the job of rearranging the widgets when the window is enlarged or reduced. Ciao - FB Thanks a lot :) Is there a way to avoid Tk() and to disable resize button only for an instance of a class which inherits Frame? -- http://mail.python.org/mailman/listinfo/python-list
Re: any good g.a.'s?
On Mar 25, 11:03 am, Tim Chase [EMAIL PROTECTED] wrote: Any good genetic algorithms involving you-split, i-pick? I've always heard it as you divide, I decide... That said, I'm not sure how that applies in a GA world. It's been a while since I've done any coding with GAs, but I don't recall any facets related to the You Divide, I Decide problem. It sounds like a simple optimization of equality, which would be a normal use of a GA. This would apply for both the division and the decision, depending on which side the GA is (the you or the I) or two diff. GAs can be on either side of the process. -tkc There's an iterated solution (no link) for more than two players. Say two GAs encounter the same resource (or if some is left after they've begun consuming)-- i.e., encounter each other, a strict survival-of- fittest can arise among a population, even leading to specialization and organ. I'm not sure if time factors in however, i.e. whether GAs are useful in spacetime; bacteria Firmicute produce spores to guard during stress. What do ideal structures have in common with real ones?; and if so, does you-split-i-pick yield anything useful in ideality? What are ideal bacteria, what do they want, and are they interesting? -- http://mail.python.org/mailman/listinfo/python-list
Circular references not being cleaned up by Py_Finalize()
I've been trying to get garbage collection of circular references to work properly with no success then I noticed the documentation stating that it just doesn't: From documentation on Py_Finalize() - Memory tied up in circular references between objects is not freed. I copy pasted the Noddy example for circular reference breaking from the documentation and set a break point in its Noddy_dealloc function and sure enough even that simple example doesn't work properly. So what's the deal here? :) I want all objects to be freed when I shut down and their destruction functions to be properly called. Is there really no way to make this happen? Many thanks for any insights, Jim -- http://mail.python.org/mailman/listinfo/python-list
Re: how to dynamically create class methods ?
On Mar 25, 6:13 pm, j vickroy [EMAIL PROTECTED] wrote:
Hello,
Here is some pseudo-code that hopefully illustrates what I want to do:
records = list(...)
for record in records:
new_fcn = define_a function_for(record)
instance = my_new_class_instance()
setattr(instance, 'myfcn', new_fcn)
instance.execute() # instance.execute() calls instance.myfcn(*args)
I have looked at some of the functions in the *new* module and
new.code(...), new.function(...), and new.instancemethod(...) appear to
do what I want, but I do not know how to use new.code() and
new.function() -- specifically what its *global* parameter should be.
The best way to understand how new.function and new.code work is to
look at the Python source. (Objects/funcobject.c and Objects/
codeobject.c, actual objects are defined in and Include/funcobject.h
Include/code.h).
However, to create a function dynamically in Python it is often no
more trouble than a def statement:
Funnily enough I can't think of a nice example ATM so here is a bad
one: say you want to create a function that checks the spelling of a
word, regardless of case. You could a function that returns on-the-
fly created functions that check the spelling of a word like this:
def get_spellchecker(word):
word = word.upper()
def check_spelling(candidate):
return candidate.upper() == word
return scheck_spelling
Then
check_hypo = get_spellchecker('hypopothamus')
check_hypo('Hypopothamus')
True
check_hypo('Big scary mammal')
False
(Warning: this is all untested).
HTH
--
Arnaud
--
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Re: Circular references not being cleaned up by Py_Finalize()
On Tue, 25 Mar 2008 12:32:17 -0700, blackpawn wrote: So what's the deal here? :) I want all objects to be freed when I shut down and their destruction functions to be properly called. Then you want something that's not guaranteed by the language. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Files, directories and imports - relative to the current directory only
En Tue, 25 Mar 2008 15:35:34 -0300, Bjoern Schliessmann
[EMAIL PROTECTED] escribió:
ptn wrote:
Traceback (most recent call last):
File path.py, line 4, in module
f = open('~/read/foo.txt')
IOError: [Errno 2] No such file or
directory: '~/read/foo.txt'
[...]
So, what's wrong here? Maybe there's something I haven't set up?
Simple: the directory ~ doesn't exist. Since you're not using a
shell (but direct file access) there is no tilde expansion, and ~
is treated as a regular file name. If you need to get the home
directory refer to the environment variable HOME
(os.environ[HOME]). There even may be a shorter way, please refer
to the os module docs.
That shorter way being os.path.expanduser
http://docs.python.org/lib/module-os.path.html
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: Circular references not being cleaned up by Py_Finalize()
blackpawn schrieb: So what's the deal here? :) I want all objects to be freed when I shut down and their destruction functions to be properly called. Is there really no way to make this happen? Does the Noddy example use GC (Py_TPFLAGS_HAVE_GC)? Container objects must use the cycle GC or circular referneces aren't broken. Have you tried calling PyGC_Collect() multiple times? Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: setattr what is the parent object?
En Tue, 25 Mar 2008 15:46:57 -0300, Jules Stevenson [EMAIL PROTECTED] escribió: I'm trying to use setattr to dynamically name and layout gui wx widgets, this is all fine and dandy until I've run up against something where I simply don't know what the object is, please see the amended **don't know** in the following code. class MyFrame2(wx.Frame): def __do_layout(self, mayaVars): main_boxSizer = wx.BoxSizer(wx.VERTICAL) for pDisplay in range(len(mayaVars.primary)): setattr=(**don't know**,r_gridBagSizer_+mayaVars.primary[pDisplay], wx.GridBagSizer(vgap=0, hgap=0)) Without all the dynamic gumpf, the statmement looks like this: r_gridBagSizer = wx.GridBagSizer(vgap=0, hgap=0)) All the other UI elements are created on 'self' but the sizers don't seem to 'belong' to anything - what should I use when this is the case? You don't have to save the sizer anywhere, but you have to call container.SetSizer(the_sizer) -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: PyGTK localisation on Win32
jwesonga pisze:
I've built an app on linux which we have managed to localise into at
least three languages, the app runs well using this command LANG=fr_FR
python app.py which would translate the app into french. We've tried
the replicate the same principle on windows but so far nothing works,
the app will need to be translated into other languages that have no
locale, in windows is there a way to have Glade load values from a
textfile instead of trying to use the .mo files?
I had no problem with using standard gettext way of doing i18n on
Windows with PyGTK an Glade, apart some quirks with LANG environment
variable. Basically, the code that works looks like this:
import gettext, locale
locale.setlocale(locale.LC_ALL, '')
if os.name == 'nt':
# windows hack for locale setting
lang = os.getenv('LANG')
if lang is None:
defaultLang, defaultEnc = locale.getdefaultlocale()
if defaultLang:
lang = defaultLang
if lang:
os.environ['LANG'] = lang
gtk.glade.bindtextdomain(appname, translation_dir)
gtk.glade.textdomain(appname)
gettext.install(appname, translation_dir, unicode=True)
Be aware, that you can not change the locale setting from the command
line like you do on Linux.
--
Jarek Zgoda
http://zgodowie.org/
We read Knuth so you don't have to - Tim Peters
--
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Re: Soup Strainer for ElementSoup?
On Mar 25, 12:17 am, John Nagle [EMAIL PROTECTED] wrote: erikcwwrote: Hi all, I was reading in the Beautiful Soup documentation that you should use a Soup Strainer object to keep memory usage down. Since I'm already using Element Tree elsewhere in the project, I figured it would make sense to use ElementSoup to keep the api consistent. (and cElementTree should be faster right??). I can't seem to figure out how to pass ElementSoup a soup strainer though. Any ideas? Also - do I need to use the extract() method with ElementSoup like I do with Beautiful Soup to keep garbage collection working? Thanks! Erik I really should get my version of BeautifulSoup merged back into the mainstream. I have one that's been modified to use weak pointers for all up and left links, which makes the graph cycle free. So the memory is recovered by reference count update as soon as you let go of the head of the tree. That helps with the garbage problem. What are you parsing? If you're parsing well-formed XML, BeautifulSoup is overkill. If you're parsing real-world HTML, ElementTree is too brittle. John Nagle I'm parsing real-world HTML with BeautifulSoup and XML with cElementTree. I'm guessing that the only benefit to using ElementSoup is that I'll have one less API to keep track of, right? Or are there memory benefits in converting the Soup object to an ElementTree? Any idea about using a Soup Strainer with ElementSoup? Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Circular references not being cleaned up by Py_Finalize()
On Mar 25, 2:32 pm, blackpawn [EMAIL PROTECTED] wrote: I've been trying to get garbage collection of circular references to work properly with no success then I noticed the documentation stating that it just doesn't: From documentation on Py_Finalize() - Memory tied up in circular references between objects is not freed. I copy pasted the Noddy example for circular reference breaking from the documentation and set a break point in its Noddy_dealloc function and sure enough even that simple example doesn't work properly. So what's the deal here? :) I want all objects to be freed when I shut down and their destruction functions to be properly called. Is there really no way to make this happen? Many thanks for any insights, Jim It sounds like you are using finalizers like destructors in C++. Don't do this. Garbage collection is not deterministic, and is not supposed to be. Instead, use language features that do similar scope-driven code execution: - try/except/finally - with Put your cleanup code in the finally block, or in the context managers __exit__ method. These will run when the program exits the given scope, without having to play GC shenanigans. -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Circular references not being cleaned up by Py_Finalize()
Does the Noddy example use GC (Py_TPFLAGS_HAVE_GC)? Container objects must use the cycle GC or circular referneces aren't broken. Have you tried calling PyGC_Collect() multiple times? Yeah the Noddy example is from 2.1.3 Supporting cyclic garbage collection part of the Python docs. They list sample C and Python code which I cut and pasted with no changes and on Py_Finalize and app shut down it leaks the object. I know the garbage collector is tracking the object because it properly calls the traverse function but for whatever reason it never calls the clear function. Does anyone have experience with circular references and had success with it or the example in the docs? -- http://mail.python.org/mailman/listinfo/python-list
