Re: Multiline CSV export to Excel produces unrecognized characters?

[Marc 'BlackJack' Rintsch]

On Sun, 23 Mar 2008 23:30:11 -0700, felciano wrote:

> The following reproduces the problem in python 2.5:
> 
> import csv
> row = [1,"hello","this is\na multiline\ntext field"]
> writer = csv.writer(open("test.tsv", "w"), dialect="excel-tab",
> quotechar='"')
> writer.writerow(row)
> 
> When opening the resulting test.tsv file, I do indeed see a cell with
> a multi-line value, but there is a small boxed question mark at the
> end of each of the lines, as if Excel didn't recognize the linebreak.
> 
> Any idea why these are there or how to get rid of them?

Any chance you are doing this on Windows and Excel doesn't like the
return+linefeed line endings that Windows produces when writing files in
text mode?  Try 'wb' as mode for the output file.

Ciao,
Marc 'BlackJack' Rintsch
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Re: encoding/decoding issue with python2.5 and pymssql

[Tzury Bar Yochay]

These are not cut&paste but typed by hand, yet they are identical to
the actual output.
seems like the first 8 bytes are swapped while the other half is
straightforward.

I deeply thank you for your assistance.

I am currently using a combination of reversed and list comprehension
to rebuild this byte array.


On Mar 24, 8:48 am, Dennis Lee Bieber <[EMAIL PROTECTED]> wrote:
> On Sun, 23 Mar 2008 22:33:58 -0700 (PDT), Tzury Bar Yochay
> <[EMAIL PROTECTED]> declaimed the following in comp.lang.python:
>
> > for example:
> > the value
> > 'EE604EE3-4AB0-4EE7-AF4D-018124393CD7'
> > is represent as
> > '\xe3N`\xee\xb0J\xe7N\xafM\x01\x81$9<\xd7'
>
>         Are those direct cut&paste?
>
> >>> "".join(["%2.2X" % ord(x) for x in 
> >>> '\xe3N`\xee\xb0J\xe7N\xafM\x01\x81$9<\xd7'])
>
> 'E34E60EEB04AE74EAF4D018124393CD7'
>
> or, putting in -
>
> 'E34E60EE-B04A-E74E-AF4D-018124393CD7'
>
>         The last half is a direct match... the front half looks to have some
> byte-swapping
>
> E34E60EE => (swap shorts)    60EEE34E
> 60EEE34E => (swap bytes)     EE604EE3                
>
> B04A => 4AB0         
>
> E74E => 4EE7         
>
>         Anything 
> onhttp://www.sqljunkies.com/Article/4067A1B1-C31C-4EAF-86C3-80513451FC0...
> of any help (besides the facet of using a GUID to ID the page describing
> GUIDs )
>
> --
>         Wulfraed        Dennis Lee Bieber               KD6MOG
>         [EMAIL PROTECTED]             [EMAIL PROTECTED]
>                 HTTP://wlfraed.home.netcom.com/
>         (Bestiaria Support Staff:               [EMAIL PROTECTED])
>                 HTTP://www.bestiaria.com/

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Re: Does python hate cathy?

[Terry Reedy]

"QS" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]

>From the title, I assumed this was spam like others with similar titles --
and that the perl newsgroup, for instance, would have 'Does perl hate 
cathy?

| I am new to python, and I encountered a weird problem.

Observation: as you will learn, the form of the error message was different 
from the standard tracebacks one gets during program execution.  This was a 
clue that it was a cleanup message and actually did make sense.

Summary lessons.

1. What a Python interpreter does after it executes the last statement is 
undefined by the language spec.  It could do absolutely nothing (and I wish 
some programs that wastefully spend minutes 'cleaning up' did just that!). 
CPython tries to do some cleanup when requested but the results are 
sometimes seemingly arbitrary.

2. If you use __del__, do so for a reason (and keeping a population count 
is one, though rare*), and explicitly delete the objects for which you want 
dependable behavior.

*A population count is a good example of a class attribute.  But it seems 
to be rare in practice because if one wants that, it seems that a 
population collection (with a len() method) is usually also wanted --  
perhaps so one can iterate thru the population.

3. Experimenting with Python is a good way to learn.  Keep it up!

tjr



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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Terry Reedy]

"Steven D'Aprano" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
| Unfortunately there's nothing we can do to fix that error. Even though
| the function object has an attribute "__name__" (also known as
| "func_name") which is set to spam, it isn't used for tracebacks. Instead,
| the label comes from a read-only attribute buried deep in the function
| object:
|
| >>> tasty_stuff.func_code.co_name = 'yummy meat-like product in a can'
| Traceback (most recent call last):
|  File "", line 1, in 
| TypeError: readonly attribute

The fact that .func_name (which is writeable) is not used at first 
surprised me until I remembered that code objects can potentially be used 
by multiple function objects and hence are not connected to any one in 
particular.

| This is a mistake, in my opinion. It's an arbitrary decision to make this
| read-only (as far as I can tell), which goes against the grain of
| Python's "we're all consenting adults here" philosophy.
|
| By the way, in case you're thinking that wanting to change the (so-
| called) name of a function is a silly think to do, not at all. Consider
| factory functions:
|
| def factory(how_much):
|def f(n=1):
|for i in range(n):
|print "I love spam a %s" % how_much
|return f
|
| Every function created by the factory has the same "name", no matter what
| name you actually use to refer to it. factory('little') and
| factory('lot') both uselessly identify themselves as "f" in tracebacks.

workaround:
>>> ftext = 'def %s(): pass'
>>> exec ftext%'ftest'
>>> ftest


so:
def factory(how_much):
'param how_much MUST be a legal name'
exec '''def %(how_much)s(n=1):
for i in range(n):
print "I love spam a %(how_much)s"''' % {'how_much': how_much}
return locals()[how_much]

f2=factory('much')
print f2.func_name

prints 'much'
But certainly setting .co_name directly would be easier

Terry Jan Reedy



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problem with harvestman on ubuntu7.10 gusty

[gags]

Hi there

I just saw that program on the awards and wanted to use it as
i installed it on ubuntu gusty gibbon it worked fine without errors
and when i  run it i get the following errors


 File "/usr/bin/harvestman", line 364, in 
   spider.run_projects()

 File "/usr/bin/harvestman", line 283, in run_projects
   self.register_common_objects()

 File "/usr/bin/harvestman", line 135, in register_common_objects
   conn = connector.HarvestManNetworkConnector()

 File "/usr/share/pycentral/harvestman/site-packages/HarvestMan/
connector.py", line 201, in _init_
   self.__configure()

 File "/usr/share/pycentral/harvestman/site-packages/HarvestMan/
connector.py", line 326, in __configure
   self.__configure_protocols()

 File "/usr/share/pycentral/harvestman/site-packages/HarvestMan/
connector.py", line 449, in __configure_protocols
   cookiehandler)

 File "/usr/lib/python2.5/urllib2.py", line 467, in build_opener
   opener.add_handler(h)

 File "/usr/lib/python2.5/urllib2.py", line 303, in add_handler
   type(handler))
TypeError: expected BaseHandler instance, got 


regards
puneet brar
9815665000
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Re: On copying arrays

[Duncan Booth]

[EMAIL PROTECTED] wrote:

> Is there a conceptual difference between
> best =test[:]
> and
>best = [x for x in test] ?
> test is a list of real numbers. Had to use the second form to avoid a
> nasty bug
> in a program I am writing. I have to add too that I was using psyco
> in Python 2.5.1.
> 
The first one will only copy sliceable sequences and will give you a result 
of the same type as test (e.g. if test is a tuple so is best).

The second one will copy any sequence, always results in a list and as a 
side effect assigns a value to 'x'.

The method usually recommended is:

  best = list(test)

as it has no side effects, copies any sequence and may be faster than the 
list comprehension. As with the second of your examples it always gives you 
a list.
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problems with harvestman on ubuntu 7.10 gusty gibbon

[puneetbrar]

Hi there
 
I just saw that program on the awards and wanted to use it as
i installed it on ubuntu gusty gibbon it worked fine without errors
and when i  run it i get the following errors
 

 File "/usr/bin/harvestman", line 364, in 
   spider.run_projects()
 
 File "/usr/bin/harvestman", line 283, in run_projects
   self.register_common_objects()
 
 File "/usr/bin/harvestman", line 135, in register_common_objects
   conn = connector.HarvestManNetworkConnector()
 
 File
"/usr/share/pycentral/harvestman/site-packages/HarvestMan/connector.py",
line 201, in _init_
   self.__configure()
 
 File
"/usr/share/pycentral/harvestman/site-packages/HarvestMan/connector.py",
line 326, in __configure
   self.__configure_protocols()
 
 File
"/usr/share/pycentral/harvestman/site-packages/HarvestMan/connector.py",
line 449, in __configure_protocols
   cookiehandler)
 
 File "/usr/lib/python2.5/urllib2.py", line 467, in build_opener
   opener.add_handler(h)
 
 File "/usr/lib/python2.5/urllib2.py", line 303, in add_handler
   type(handler))
TypeError: expected BaseHandler instance, got 


regards
puneet brar


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Re: always getting 'None' return value from PyObject_CallObject

[Gal Aviel]

problem fixed ...
my bad.
I was using a dispatch mechanism where the C code always called the same python
dispatch function, with the actual function name to invoke as arguments.
Anyway, I forgot the 'return' statement.
The code is below.
Many thanks and apologies for the help provided :)

def dispatch(*args):
#print "Dispatch: args are "
#print args[1:]
global_dict = globals()
return global_dict[args[0]](args[1:])


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Shortcutting the function call stack

[Julien]

Hello all,

I would like to do something like:

def called(arg)
if arg==True:
!!magic!!caller.return 1

def caller(arg)
called(arg)
return 2

Here, the fake !!!magic!!! represents a statement (which I ignore)
that would make the caller function return a value different from what
it'd return normally.

For example, caller(True) would return 1, and caller(False) would
return 2. The reason I want that is because I don't want the caller
function to know what's going on in the called function, and be
shortcut if the called function think it's necessary.

Would you know if that's possible, and if so, how?

I've done a bit of research and I think I've found some good pointers,
in particular using the 'inspect' library:

import inspect

def called(arg)
if arg==True:
caller_frame = inspect.stack()[1]
...

Here 'caller_frame' contains the frame of the caller function. Now,
how can I make that frame return a particular value?

By the way, I'm not really interested in 'called' throwing an
exception and 'caller' catching it. In fact, I want things to remain
completely transparent for 'caller'.

Hope that was clear... :/

Thanks!

Julien
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Installing Mutagen Package On Windows

[Benjamin Serrato]

Hey, I've run into another problem. I am trying to install the Mutagen 
package to use as my first useful program, but can't figure out how to 
install it on windows. The README says it is a simple application of--

Installing
--
  $ ./setup.py build
  $ su -c "./setup.py install"

--but I ran c:\>python c:\python25\tools\scripts\setup.py build and did 
similarly for setup.py. I also added c:\python25 and 
c:\python25\tools\scripts to my path, but this hasn't worked. I have 
heard of 'easy_install' but don't know how to run easy_install. So, I 
ask for a reference because Google did not give me a quick answer and 
the python.org explanation at PEP 250 doesn't really explain what I 
should do.
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Re: Pyparsing help

[Francesco Bochicchio]

Il Sat, 22 Mar 2008 14:11:16 -0700, rh0dium ha scritto:

> Hi all,
> 
> I am struggling with parsing the following data:
> 
> test1 = """
> Technology  {
> name= "gtc" dielectric  
>= 2.75e-05 unitTimeName  
>  = "ns" timePrecision   = 1000
> unitLengthName  = "micron"
> lengthPrecision = 1000 gridResolution   
>   = 5
> unitVoltageName = "v" voltagePrecision  
>  = 100 unitCurrentName =
> "ma" currentPrecision= 1000
> unitPowerName   = "pw" powerPrecision   
>   = 1000 unitResistanceName  =
> "kohm" resistancePrecision = 1000
> unitCapacitanceName = "pf"
> capacitancePrecision= 1000
> unitInductanceName  = "nh"
> inductancePrecision = 100
> }
> 
> Tile"unit" {
> width   = 0.22 height   
>   = 1.69
> }
> 
>

Did you think of using something a bit more sofisticated than pyparsing?
I have had a good experience to using ply, a pure-python implementation
of yacc/lex tools, which I used to extract significant data from C 
programs to automatize documentation.

I never used before yacc or similar tools, but having a bit of experience 
with BNF notation, I found ply easy enough. In my case, the major problem 
was to cope with yacc limitation in describing C syntax (which I solved 
by "oelaxing" the rules a bit, since I was going to process only already-
compiled C code). In your much simpler case, I'd say that a few 
production rules should be enough.

P.S : there are others, faster and maybe more complete python parser, but 
as I said ply is pure python: no external libraries and runs everywhere.

Ciao
---
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hi friends........... google group invites you a won dering world of businesss ............. do u want to earn mil lions of dollers per month through online jobs joined with me and find the way to ea

[bright]

  hi friends... google group invites you a wondering world of
businesss . do u want to earn millions of dollers per
month through online jobs joined with me and find the way to earn
dollers. visit us www.jobsforyouguys.blogspot.co­m
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Disable resize button

[myonov]

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 = u"Добави Книга",\
 command=self.click, font = "Courier",
\
 fg = "red")
self.b2 = Tkinter.Button(self, text = u"Добави 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 = u"Информация", fg = "#ff",\
bg = "#99")
self.l1.place(x = 275, y = 10)

#   Text Control
#self.txt = Tkinter.Text(self, bg = "#124456", )
#self.txt.pack()




def main():
app = App()
app.mainloop()

if __name__ == "__main__": main()
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Re: Pyparsing help

[Paul McGuire]

On Mar 23, 4:04 pm, rh0dium <[EMAIL PROTECTED]> wrote:
>
> I needed to tweak it a bit to ignore the comments..  Namely this fixed
> it up..
>
>     mainDict = dictOf(
>             Group(Word(alphas)+Optional(quotedString)),
>             Suppress("{") + attrDict + Suppress("}")
>             ) | cStyleComment.suppress()
>
> Thanks again.  Now I just need to figure out how to use your dicts to
> do some work..- Hide quoted text -
>
> - Show quoted text -

I'm glad this is coming around to some reasonable degree of completion
for you.  One last thought - your handling of comments is a bit crude,
and will not handle comments that crop up in the middle of dict
entries, as in:

color= /* using non-standard color during testing */
   "plum"

The more comprehensive way to handle comments is to call ignore.
Using ignore will propagate the comment handling to all embedded
expressions, so you only need to call ignore once on the top-most
pyparsing expression, as in:

mainDict.ignore(cStyleComment)

Also, ignore does token suppression automatically.

-- Paul
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Re: Installing Mutagen Package On Windows

[Diez B. Roggisch]

Benjamin Serrato schrieb:
> Hey, I've run into another problem. I am trying to install the Mutagen 
> package to use as my first useful program, but can't figure out how to 
> install it on windows. The README says it is a simple application of--
> 
> Installing
> --
>  $ ./setup.py build
>  $ su -c "./setup.py install"
> 
> --but I ran c:\>python c:\python25\tools\scripts\setup.py build and did 
> similarly for setup.py. I also added c:\python25 and 
> c:\python25\tools\scripts to my path, but this hasn't worked. I have 
> heard of 'easy_install' but don't know how to run easy_install. So, I 
> ask for a reference because Google did not give me a quick answer and 
> the python.org explanation at PEP 250 doesn't really explain what I 
> should do.

You need to call

python2.5 setup.py install

and google for setuptools, python, easy_install to find out all about it 
you need.

Diez
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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Steven D'Aprano]

On Mon, 24 Mar 2008 04:33:53 -0400, Terry Reedy wrote:

> The fact that .func_name (which is writeable) is not used at first
> surprised me until I remembered that code objects can potentially be
> used by multiple function objects and hence are not connected to any one
> in particular.

How does that happen?

And if it is the case, what's the justification for giving them a co_name 
attribute? Surely the name of the function should be that of the function 
object, not of one of the shared parts?


-- 
Steven
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Re: parsing json output

[Paul McGuire]

On Mar 18, 9:10 pm, Gowri <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have a service running somewhere which gives me JSON data. What I do
> is this:
>
> import urllib,urllib2
> import cjson
>
> url = 'http://cmsdoc.cern.ch/cms/test/aprom/phedex/dev/gowri/datasvc/
> tbedi/requestDetails'
> params = {'format':'json'}
> eparams = urllib.urlencode(params)
> request = urllib2.Request(url,eparams)
> response = urllib2.urlopen(request)    # This request is sent in HTTP
> POST
> print response.read()
>
> This prints a whole bunch of nonsense as expected. I use cjson and am
> unable to figure out how to print this json response and I guess if I
> can do this, parsing should be straightforward?


Gowri -

On a lark, I tried using the JSON parser that ships with the examples
in pyparsing (also available online at 
http://pyparsing.wikispaces.com/space/showimage/jsonParser.py).
The parsed data returned by pyparsing gives you a results object that
supports an attribute-style access to the individual fields of the
JSON object.  (Note: this parser only reads, it does not write out
JSON.)

Here is the code to use the pyparsing JSON parser (after downloading
pyparsing and the jsonParser.py example), tacked on to your previously-
posted code to retrieve the JSON data in variable 's':


from jsonParser import jsonObject
data = jsonObject.parseString(s)

# dump out listing of object and attributes
print data.dump()
print

# printe out specific attributes
print data.phedex.call_time
print data.phedex.instance
print data.phedex.request_call

# access an array of request objects
print len(data.phedex.request)
for req in data.phedex.request:
#~ print req.dump()
print "-", req.id, req.last_update


This prints out (long lines clipped with '...'):

[['phedex', [['request', [[['last_update', '1188037561'], ...
- phedex: [['request', [[['last_update', '1188037561'],
['numofapproved', '1'],...
  - call_time: 0.10059
  - instance: tbedi
  - request: [[['last_update', '1188037561'], ['numofapproved',
'1'], ...
  - request_call: requestDetails
  - request_date: 2008-03-24 12:56:32 UTC
  - request_timestamp: 1206363392.09
  - request_url: 
http://cmsdoc.cern.ch/cms/test/aprom/phedex/dev/gowri/datasvc/tbedi/requestDetails?format=json

0.10059
tbedi
requestDetails
1884
- 7425 1188037561
- 8041 1188751826
- 9281 1190116795
- 9521 1190248781
- 12821 1192615612
- 13121 1192729887
...

The dump() method is a quick way to see what keys are defined in the
output object, and from the code you can see how to nest the
attributes following the nesting in the dump() output.

Pyparsing is pure Python, so it is quite portable, and works with
Python 2.3.1 and up (I ran this example with 2.5.1).

You can find out more at http://pyparsing.wikispaces.com.

-- Paul
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python library to manipulate PALM documents ?

[Francesco Bochicchio]

Hi all,

anybody knows a python equivalent of the perl PALM::Doc module (and 
eventually other PALM::).

I have a e-book device wich reads mobi-pocket format (among others). I 
have downloaded from a forum a set of perl scripts to convert HTML to
unencripted mobipocket format and vice-versa. It uses the PALM:: package. 
I would attempt (for my convenience and for the fun of it) to make a
python equivalent of that. Hence my quest for a Palm::Doc equivalent. 

My googling up to now resulted in nothing relevant. Keeping searching ...

Ciao
-
FB
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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Arnaud Delobelle]

On Mar 24, 1:26 pm, Steven D'Aprano <[EMAIL PROTECTED]
cybersource.com.au> wrote:
> On Mon, 24 Mar 2008 04:33:53 -0400, Terry Reedy wrote:
> > The fact that .func_name (which is writeable) is not used at first
> > surprised me until I remembered that code objects can potentially be
> > used by multiple function objects and hence are not connected to any one
> > in particular.
>
> How does that happen?

Like this:

>>> def foomaker(x):
... def foo(y): return x+y
... return foo
...
>>> foo1 = foomaker(1)
>>> foo2 = foomaker(2)
>>> foo1.func_code
", line 2>
>>> foo2.func_code
", line 2>

Of course foo1 and foo2 are not the same thing:

>>> foo1(8)
9
>>> foo2(8)
10

> And if it is the case, what's the justification for giving them a co_name
> attribute? Surely the name of the function should be that of the function
> object, not of one of the shared parts?

>>> foo1.__name__
'foo'
>>> foo1.func_code.co_name
'foo'

As seen above, func.__name__ and func.func_code.co_name are the same
thing (until tampered with).

--
Arnaud

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Serving another web site which requires authentication

[hasnihon . support]

Hi,

I need your suggestions about the topic.
Actually, I'm not sure where to start but basically, I want to make
something like;

(I have an account on a site which requires log-in)
- I'll be logged-in to that site with my account in my server.
- And when a user connects to my site, I'll forward him/her to that
  site, using my account even if he/she doesn't have an account
  on that site...

probably, I need to develop a proxy to do this, but I'm not sure...
(I use python + django)

I really appriciate your ideas.
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Re: Shortcutting the function call stack

[Steven D'Aprano]

On Mon, 24 Mar 2008 04:21:29 -0700, Julien wrote:

> Hello all,
> 
> I would like to do something like:
> 
> def called(arg)
> if arg==True:
> !!magic!!caller.return 1

Instead of writing "if arg==True", or "if (arg==True)==True", or even 
"if ((arg==True)==True)==True", you should just write:

"if arg:"

That's probably all you need.


> 
> def caller(arg)
> called(arg)
> return 2


def called(arg):
return 1

def caller(arg):
if arg: return called(arg)
return 2


And if you wish to change the place where the decision is made:

def called(arg):
if arg: return 1
else: return 2

def caller(arg):
return called(arg)


> Here, the fake !!!magic!!! represents a statement (which I ignore) that
> would make the caller function return a value different from what it'd
> return normally.

The statement you use to return a value different from what you would 
normally return is the "return" statement. You need to call that 
statement from the function doing the returning, not from another 
function.



> The reason I want that is because I don't want the caller function to
> know what's going on in the called function, and be shortcut if the
> called function think it's necessary.

Not knowing what's going on in called functions is why functions were 
invented in the first place. That's what they do.

What shortcut do you think you might want to take? There are probably 
better solutions than playing around with the internals of the 
interpreter. I have a feeling you are trying to implement some sort of 
function cache, maybe... 

def check_in_cache(arg):  # fake cache code
if arg:
!!magic!!caller.return 1  # not real Python

def function(arg):
check_in_cache(arg)  # magic happens here
# but if it doesn't, we do lots of calculations here
return 2  # and finally return


Is that the sort of thing you're trying for? If so, that's not the way to 
go about it.



-- 
Steven
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urllib leaves connections/sockets waiting. BIG problem!!!

[binaryj]

hi i am using urllib2 to do some automated web thing.
basically i hit on sites and check the price what they are offering
for their product and then decide if i want to lower or increase my
pricing.so in short i have to hit hundreds of sites!

for the problem:
=
i run 20 threads all do the same stuff. (hit and run :) )
after around 10-15 hits(per thread) hits the thread does nothing. it
freezes. slowely but STEADILY all the threads end up with the same
fate :(

i did some netstat and found out that the connecton(sockets) the
program had opened are waiting the CLOSE_WAIT state !!

netstat -t
tcp1  0 192.168.1.2:4882host-blabla:www
CLOSE_WAIT
tcp1  0 192.168.1.2:4884host-blabla:www
CLOSE_WAIT
tcp1  0 192.168.1.2:4375host-blabla:www
CLOSE_WAIT


OUTPUT OF PROGRAM:
THREAD: #Thread-2 getting price from webi-d  7511975 DONE !!!
THREAD: #Thread-1 getting price from webi-d  4449152 DONE !!!
THREAD: #Thread-2 getting price from webi-d  7466091 DONE !!!
THREAD: #Thread-1 getting price from webi-d  8641914 DONE !!!
THREAD: #Thread-2 getting price from webi-d  7745289 DONE !!!
THREAD: #Thread-1 getting price from webi-d  6032442 DONE !!!
THREAD: #Thread-2 getting price from webi-d  8149873 DONE !!!
no-price-on-page error
THREAD: #Thread-1 getting price from webi-d  5842934 DONE !!!
no-price-on-page error
THREAD: #Thread-2 getting price from webi-d  3385778 DONE !!!
THREAD: #Thread-1 getting price from webi-d  4610122 DONE !!!
THREAD: #Thread-2 getting price from webi-d  8641536 DONE !!!
THREAD: #Thread-1 getting price from webi-d  4219935 DONE !!!
-and thats it, it freezes. i have waited 1hr the sockets have
not changed their states! :(


please help :)
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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Steven D'Aprano]

On Mon, 24 Mar 2008 06:48:10 -0700, Arnaud Delobelle wrote:

> On Mar 24, 1:26 pm, Steven D'Aprano <[EMAIL PROTECTED]
> cybersource.com.au> wrote:
>> On Mon, 24 Mar 2008 04:33:53 -0400, Terry Reedy wrote:
>> > The fact that .func_name (which is writeable) is not used at first
>> > surprised me until I remembered that code objects can potentially be
>> > used by multiple function objects and hence are not connected to any
>> > one in particular.
>>
>> How does that happen?
> 
> Like this:
> 
 def foomaker(x):
> ... def foo(y): return x+y
> ... return foo
> ...
 foo1 = foomaker(1)
 foo2 = foomaker(2)
 foo1.func_code
> ", line 2>
 foo2.func_code
> ", line 2>


Ah, that makes sense. And obvious in hindsight.


> Of course foo1 and foo2 are not the same thing:

Naturally not. They are different functions. The fact that they share a 
small part (func_code) is irrelevant. There's more to a function than the 
code object.



>> And if it is the case, what's the justification for giving them a
>> co_name attribute? Surely the name of the function should be that of
>> the function object, not of one of the shared parts?
> 
 foo1.__name__
> 'foo'
 foo1.func_code.co_name
> 'foo'
> 
> As seen above, func.__name__ and func.func_code.co_name are the same
> thing (until tampered with).

Yes, but what I'm asking is why the code objects have a co_name 
attribute. And even if there's a good reason for code objects to have a 
name, why do tracebacks use func.func_code.co_name instead of 
func.__name__?


-- 
Steven
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Re: Serving another web site which requires authentication

[binaryj]

ur in luck i am an expert at this!
tell me the details , site name etc

you would have to proxy everything, basically the urls in the copied
page have to be changed to point to ur site.

its highly possible. a minor adjustment to ur urlconf and it will work.
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URL encoding

[vvangelovski]

Is there any method in the standard modules that can perform proper
url encoding according to RFC?
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Re: URL encoding

[binaryj]

On Mar 24, 7:04 pm, [EMAIL PROTECTED] wrote:
> Is there any method in the standard modules that can perform proper
> url encoding according to RFC?

whats wrong with the current encoding ??? it just works fine!!!

or is it that u dont know about urllib.urlencode() ??
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Re: On copying arrays

[Steven D'Aprano]

On Mon, 24 Mar 2008 09:52:21 +, Duncan Booth wrote:

> The method usually recommended is:
> 
>   best = list(test)
> 
> as it has no side effects

In general, you can't assume *anything* in Python has no side effects, 
unless you know what sort of object is being operated on. Here's an 
example that changes the value of test:

>>> test = iter((1, 2, 3, 4, 5, 6))
>>> best = list(test)
>>> best
[1, 2, 3, 4, 5, 6]
>>> another = list(test)
>>> another
[]


And here's an example that has a rather obvious side-effect:


>>> class Foo(object):
... def __getitem__(self, n):
... if n == 3: print "I'm in ur puter, deletin ur files"
... if 0 <= n < 6: return n+1
... raise IndexError
...
>>> test = Foo()
>>> best = list(test)
I'm in ur puter, deletin ur files
>>> best
[1, 2, 3, 4, 5, 6]


-- 
Steven
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Re: Multiline CSV export to Excel produces unrecognized characters?

[felciano]

>
> Any chance you are doing this on Windows and Excel doesn't like the
> return+linefeed line endings that Windows produces when writing files in
> text mode?  Try 'wb' as mode for the output file.
>
> Ciao,
> Marc 'BlackJack' Rintsch
>
Fixed! Can't believe I missed that...

Thank you for the quick reply!

Ramon
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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Arnaud Delobelle]

On Mar 24, 2:01 pm, Steven D'Aprano <[EMAIL PROTECTED]
cybersource.com.au> wrote:
[...]
>
> Yes, but what I'm asking is why the code objects have a co_name
> attribute. And even if there's a good reason for code objects to have a
> name, why do tracebacks use func.func_code.co_name instead of
> func.__name__?

>From what I remember when I looked at the source: stack frames execute
code objects, not functions.  They don't know what function has
spawned them, only what code object they are executing.  In fact when
one thinks of it, it makes more sense for code objects to have a name
(taken from the def statement) than for function objects, as there is
exactly one code object for every def statement.

--
Arnaud

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Re: Shortcutting the function call stack

[Jason]

On Mar 24, 5:21 am, Julien <[EMAIL PROTECTED]> wrote:
> Hello all,
>
> I would like to do something like:
>
> def called(arg)
> if arg==True:
> !!magic!!caller.return 1
>
> def caller(arg)
> called(arg)
> return 2
>
> Here, the fake !!!magic!!! represents a statement (which I ignore)
> that would make the caller function return a value different from what
> it'd return normally.
>
> For example, caller(True) would return 1, and caller(False) would
> return 2. The reason I want that is because I don't want the caller
> function to know what's going on in the called function, and be
> shortcut if the called function think it's necessary.
>
> Would you know if that's possible, and if so, how?
>
> I've done a bit of research and I think I've found some good pointers,
> in particular using the 'inspect' library:
>
> import inspect
>
> def called(arg)
> if arg==True:
> caller_frame = inspect.stack()[1]
> ...
>
> Here 'caller_frame' contains the frame of the caller function. Now,
> how can I make that frame return a particular value?
>
> By the way, I'm not really interested in 'called' throwing an
> exception and 'caller' catching it. In fact, I want things to remain
> completely transparent for 'caller'.
>
> Hope that was clear... :/
>
> Thanks!
>
> Julien

As Steven wrote, it's not very clear.  If we knew the intent of this,
we could perhaps point you to a more useful, maintainable technique.
We don't know why you're trying to circumvent the programming language
in this case.  Any solution that works as you described will probably
be unportable between the different Pythons (CPython, Jython,
IronPython, etc).

Please note that the following code should work, but I've only run it
through the interpreter in my brain.  My brain's interpreter is full
of Heisenbugs, so you may need to adjust a few things.  Here's my
thoughts:

Given:
def First( arg ):
Second( arg )
return 5

1)  If you can modify both functions, change the first function to
return a value in certain circumstances:
def AltFirst( arg ):
value = Second( arg )
if value is not None:  return value
return 5

2)  Raise an exception in Second, and catch that exception above
First:

class SecondExcept(Exception):
def __init__(self, value):
Exception.__init__(self, 'Spam!')
self.value = value

def Second(arg):
if arg == my_conditional_value:
raise SecondExcept( 5 )

# The following could even be put in your own function,
# or in a wrapper or decorator for the First function.
try:
myvalue = First( 'Vikings!' )
except SecondExcept, exc:
myvalue = exc.value

When you need to use an exceptional pathway, use an exception.  They
aren't just for reporting errors.

Hope this helps.

  --Jason
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Re: python library to manipulate PALM documents ?

[Guilherme Polo]

24 Mar 2008 13:36:13 GMT, Francesco Bochicchio <[EMAIL PROTECTED]>:
> Hi all,
>
>  anybody knows a python equivalent of the perl PALM::Doc module (and
>  eventually other PALM::).
>
>  I have a e-book device wich reads mobi-pocket format (among others). I
>  have downloaded from a forum a set of perl scripts to convert HTML to
>  unencripted mobipocket format and vice-versa. It uses the PALM:: package.
>  I would attempt (for my convenience and for the fun of it) to make a
>  python equivalent of that. Hence my quest for a Palm::Doc equivalent.
>

I'm not sure if it is what you are after, but it seems to be, check this:
http://pypi.python.org/pypi/PalmDB/1.8.1

>  My googling up to now resulted in nothing relevant. Keeping searching ...
>
>  Ciao
>  -
>  FB
>
> --
>  http://mail.python.org/mailman/listinfo/python-list
>


-- 
-- Guilherme H. Polo Goncalves
-- 
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Re: Shortcutting the function call stack

[castironpi]

On Mar 24, 9:48 am, Jason <[EMAIL PROTECTED]> wrote:
> On Mar 24, 5:21 am, Julien <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
> > Hello all,
>
> > I would like to do something like:
>
> > def called(arg)
> >     if arg==True:
> >         !!magic!!caller.return 1
>
> > def caller(arg)
> >     called(arg)
> >     return 2
>
> > Here, the fake !!!magic!!! represents a statement (which I ignore)
> > that would make the caller function return a value different from what
> > it'd return normally.
>
> > For example, caller(True) would return 1, and caller(False) would
> > return 2. The reason I want that is because I don't want the caller
> > function to know what's going on in the called function, and be
> > shortcut if the called function think it's necessary.
>
> > Would you know if that's possible, and if so, how?
>
> > I've done a bit of research and I think I've found some good pointers,
> > in particular using the 'inspect' library:
>
> > import inspect
>
> > def called(arg)
> >     if arg==True:
> >         caller_frame = inspect.stack()[1]
> >         ...
>
> > Here 'caller_frame' contains the frame of the caller function. Now,
> > how can I make that frame return a particular value?
>
> > By the way, I'm not really interested in 'called' throwing an
> > exception and 'caller' catching it. In fact, I want things to remain
> > completely transparent for 'caller'.
>
> > Hope that was clear... :/
>
> > Thanks!
>
> > Julien
>
> As Steven wrote, it's not very clear.  If we knew the intent of this,
> we could perhaps point you to a more useful, maintainable technique.
> We don't know why you're trying to circumvent the programming language
> in this case.  Any solution that works as you described will probably
> be unportable between the different Pythons (CPython, Jython,
> IronPython, etc).
>
> Please note that the following code should work, but I've only run it
> through the interpreter in my brain.  My brain's interpreter is full
> of Heisenbugs, so you may need to adjust a few things.  Here's my
> thoughts:
>
> Given:
>     def First( arg ):
>         Second( arg )
>         return 5
>
> 1)  If you can modify both functions, change the first function to
> return a value in certain circumstances:
>     def AltFirst( arg ):
>         value = Second( arg )
>         if value is not None:  return value
>         return 5
>
> 2)  Raise an exception in Second, and catch that exception above
> First:
>
> class SecondExcept(Exception):
>     def __init__(self, value):
>         Exception.__init__(self, 'Spam!')
>         self.value = value
>
> def Second(arg):
>     if arg == my_conditional_value:
>         raise SecondExcept( 5 )
>
> # The following could even be put in your own function,
> # or in a wrapper or decorator for the First function.
> try:
>     myvalue = First( 'Vikings!' )
> except SecondExcept, exc:
>     myvalue = exc.value
>
> When you need to use an exceptional pathway, use an exception.  They
> aren't just for reporting errors.

Exceptions are a control tool.  There was a 'goto using Exceptions'
once in the manuals.  I don't see a problem with a local control-flow
object.  It would appease a number of requests I've read.

for x:
  for y:
control.break( 2 )

if a:
  if b:
control.fail( 2 )

so no need to reduplicate:

  else:
thing()
else:
  thing()

if a:
  if b:
control.mostrecenttest( 0 )

def f():
  def g():
control.return( 2 )( "early" )

Something tells me generators could solve the problem, but I may be
enamored, so it's a separate post.
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Element Tree Help

[Robert Rawlins]

Hello Guys,I have little to no experiance with element tree and I'm struggling 
to find a way to parse the details from the XML document (attached) into my 
application. Essentialy I'm looking to take the following document and turn it 
into a dict of tuples, each dict element defines a datasource with the key to 
the element being the 'name' which is defined in the XML and then the value of 
the pair is a tuple which contains the details of the datasource, like the host 
and port etc.I've attached a copy of the example XML to this email.Can anyone 
offer some advice on how to get started with this? I've spent a little time 
looking over the documentation of element tree and have struggled to break the 
ice and parse this document.Thanks guys,Robert 
_
The next generation of Windows Live is here
http://www.windowslive.co.uk/get-live



a name
localhost
3306
database1
someusername
somepassword


another name
localhost
3306
database2
itsusername
andthepassword

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what are generators?

[castironpi]

I'm looking for a cool trick using generators.  Know any exercises I
can work?
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Re: dividing tuple elements with an int or float

[castironpi]

On Mar 23, 12:22 pm, Lie <[EMAIL PROTECTED]> wrote:
> On Mar 22, 2:23 pm, [EMAIL PROTECTED] wrote:
>
> > > Sane programmers don't write such semi-functional things (unless it
> > > helps expressing the problem in certain domains).
> > > I now think that deprecating map, lambda & Co. was a good thing after
> > > all.
>
> > If you write it that way the first time, you need therapy.  Actually,
> > at this point, I (for one, personally) want to investigate 'certain
> > domains'.  Tell me it's really bad at everything or what it's good
> > at.  What can I respect about it?
>
> If you (castiro..) write it your way, you'll surely win the Obfuscated
> Python Code Contest.

Sometimes you're on a roll and you don't want to back up a step.  What
are good "on a roll" habits?  (Or, what roll?)
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pythonweb and Leopard

[brianrpsgt1]

I am trying to create a simple web application that is written in
python, using apache and mysql.  It appears as though the python web
modules have been installed, however, whenever I try to run a python
script, it only displays the code in the browser.  It is like the
python code is not getting processed.  I have tried this on a iMac
(Intel) and a PowerBook G4, both running Leopard.

Python Web Modules 0.5.3
Apache 2.2
Python 2.5

I am trying to run the python script from the default web directory on
the Mac, /Library/WebServer/Documents
I updated the httpd.conf for the  to say Options +ExecCGI
and AddHandler cgi-script .cgi .py

I know that I am missing something simple.

Any help would be great

B
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Re: Element Tree Help

[Stefan Behnel]

Robert Rawlins wrote:
> Hello Guys,I have little to no experiance with element tree and I'm
> struggling to find a way to parse the details from the XML document
> (attached) into my application. Essentialy I'm looking to take the
> following document and turn it into a dict of tuples, each dict element
> defines a datasource with the key to the element being the 'name' which is
> defined in the XML and then the value of the pair is a tuple which contains
> the details of the datasource, like the host and port etc.I've attached a
> copy of the example XML to this email.Can anyone offer some advice on how
> to get started with this? I've spent a little time looking over the
> documentation of element tree and have struggled to break the ice and parse
> this document.Thanks guys,Robert

Given this document:





a name
localhost
3306
database1
someusername
somepassword


another name
localhost
3306
database2
itsusername
andthepassword



I would do something like this:

  d = {}
  for event, element in ET.iterparse("thefile.xml"):
  if element.tag == "datasource":
  d[element.find("name")] = tuple([ el.text for el in element ])

Stefan
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Re: Element Tree Help

[Stefan Behnel]

Stefan Behnel schrieb:
> Robert Rawlins wrote:
>> Hello Guys,I have little to no experiance with element tree and I'm
>> struggling to find a way to parse the details from the XML document
>> (attached) into my application. Essentialy I'm looking to take the
>> following document and turn it into a dict of tuples, each dict element
>> defines a datasource with the key to the element being the 'name' which is
>> defined in the XML and then the value of the pair is a tuple which contains
>> the details of the datasource, like the host and port etc.I've attached a
>> copy of the example XML to this email.Can anyone offer some advice on how
>> to get started with this? I've spent a little time looking over the
>> documentation of element tree and have struggled to break the ice and parse
>> this document.Thanks guys,Robert
> 
> Given this document:
> 
> 
> 
> 
>   
>   a name
>   localhost
>   3306
>   database1
>   someusername
>   somepassword
>   
>   
>   another name
>   localhost
>   3306
>   database2
>   itsusername
>   andthepassword
>   
> 
> 
> I would do something like this:
> 
>   d = {}
>   for event, element in ET.iterparse("thefile.xml"):
>   if element.tag == "datasource":
>   d[element.find("name")] = tuple([ el.text for el in element ])

Sorry, the last line should be

   d[element.findtext("name")] = tuple([ el.text for el in element ])

but you'll likely have to modify that line anyway.

Stefan
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Re: URL encoding

[Stefan Behnel]

binaryj wrote:
> On Mar 24, 7:04 pm, [EMAIL PROTECTED] wrote:
>> Is there any method in the standard modules that can perform proper
>> url encoding according to RFC?
> 
> whats wrong with the current encoding ??? it just works fine!!!
> 
> or is it that u dont know about urllib.urlencode() ??

I think that was obvious from the question, no need to spill punctuation marks
all over the place.

Stefan
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Re: Disable resize button

[Francesco Bochicchio]

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 = u"Добави Книга",\
>  command=self.click, font = "Courier",
> \
>  fg = "red")
> self.b2 = Tkinter.Button(self, text = u"Добави 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 = u"Информация", 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
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Re: python library to manipulate PALM documents ?

[Francesco Bochicchio]

Il Mon, 24 Mar 2008 12:08:59 -0300, Guilherme Polo ha scritto:

> 24 Mar 2008 13:36:13 GMT, Francesco Bochicchio <[EMAIL PROTECTED]>:
>> Hi all,
>>
>>  anybody knows a python equivalent of the perl PALM::Doc module (and
>>  eventually other PALM::).
>>
>>  I have a e-book device wich reads mobi-pocket format (among others). I
>>  have downloaded from a forum a set of perl scripts to convert HTML to
>>  unencripted mobipocket format and vice-versa. It uses the PALM::
>>  package. I would attempt (for my convenience and for the fun of it) to
>>  make a python equivalent of that. Hence my quest for a Palm::Doc
>>  equivalent.
>>
>>
> I'm not sure if it is what you are after, but it seems to be, check
> this: http://pypi.python.org/pypi/PalmDB/1.8.1
> 
It could be. I read that mobipocket files may have extension .prc.

Ciao

FB

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Re: Why I hate lambdas (Re: Do any of you recommend Python as a firstprogramming language?)

[bearophileHUGS]

Paul Rubin>It's at least pretty good.  It's not ideal, but nothing
ever is.<

I agree. At the moment Python is among the best languages for that,
but it's not perfect for that purpose. I think newbies may need a bit
more structured language, where you have to put things in a certain
order to have a working program. I think this may teach them some good
programming habits. Pascal is a bit too much old today, but it helps
learn how to program in a tidy way. I am not sure about this, I'd like
to have more data to be able to sort out this freedom/structure
alternative regarding teaching languages.
Another possible downside of Python is that it doesn't allow you to
know very well what's under the language, so you can't use pointers
and memory very well, so you can't learn those things very well. You
need a different language for that, like C (or Pascal) or assembly,
but such languages are useful later, and less as very first languages,
especially for very young people.


Paul Rubin>Chris Okasaki (of functional data structures fame) has an
interesting blog post about why indentation-based structuring is a big
help for teaching:<

I have quite appreciated that article, and other people are doing
similar things for C and C++ (I'd like to do something similar for D):
http://blog.micropledge.com/2007/09/nobraces/
And OCaml:
http://people.csail.mit.edu/mikelin/ocaml+twt/


Arnaud Delobelle>My other 'coming of age' was when I took a lambda-
calculus course at university.  I felt like a man who's had a black
and white TV set all his life and watches colour TV for the first
time.<

Scheme-like languages are surely interesting, and eventually a
programmer can learn one of them, but I think as a very first language
Python is fitter, because its syntax is more compatible with a normal
little trained human mind.



7stud>Beginning programmers in grades 9-12 are not going to understand
issues like that, and it would be a mistake to try and introduce
them.  Beginning programmers should be concentrating their efforts on
learning the syntax of a language and basic constructs like for-loops
and if statements.<

This is wrong. Some languages like Scheme are quite fit for young
people, and they don't even need a for loop. A 7-9 years old person is
able to understand quite a lot, and computer science and programming
aren't based on syntax. They are more based on the fun of problem
solving, and similar things. Syntax is important because it's the tool
that allows you to tell the computer how to compute the results of the
problems you have (usually) already solved, but it can't be the
purpose, even in a first course of programming. When you want to teach
painting to a 6 year old child your purpose isn't teaching her/him all
about the structure of the canvas and brushes and the chemistry of the
pigments, but how to have fun putting all the colors on the canvas/
paper, trying to create some image, for fun. (On the other hand you
can teach to love chemistry to a 6-8 year old person, showing how much
it can be fun, if you start talking about the chemistry behind the
colors of fireworks, but that's not panting anymore).


Ben C>Why does Python not have a switch or until statement?<

Maybe because it thinks syntax minimalism is a virtue, or maybe
because they aren't easy to add (try to design a do-while using Python-
like syntax).


Ben C>Why are very common objects (stack, queue, linked list) not
builtin? etc.<

Because it was a small language, used for scripting purposes, I think.
You need those data structures if you want higher performance (in
speed and/or memory used) but performance was not one of the main
purposes of Python.
Another purpose for those data structures is to teach them, but a good
teaching language is probably one that allows you to write your own
versions of them.
Today the collections module and other built-in modules gives you some
of those data structures, you just need to import them, so using them
isn't much a hassle, even if they aren't built in.


Aahz>The problem with lambda is that too often it results in clutter<

Probably I am missing your point, but I'd like to remind people the
syntax for lambdas in the last C# versions:
x, y => x * 2 + y
Instead of the Python syntax:
lambda x, y: x * 2 + y
I think that C# syntax is nice and readable enough.


Terry Reedy>[lot of things] Yes, fundamentally different categories of
types are (sensibly) treated differently with repect to definition and
namespace names, but calling that 'disharmony' depends on the
listener.<

Thank you for your interesting explanation.

Bye,
bearophile
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RE: Element Tree Help

[Reedick, Andrew]

Robert Rawlins wrote:
> I have little to no experiance with element tree and I'm struggling to 
> find a way to parse the details from the XML document (attached) into 
> my application. Essentialy I'm looking to take the following document 
> and turn it into a dict of tuples, each dict element defines a 
> datasource with the key to the element being the 'name' which is 
> defined in the XML and then the value of the pair is a tuple which 
> contains the details of the datasource, like the host and port etc.


Here's another way to walk an ElementTree.  This one creates a hash of hashes 
which are normally more useful than tuples for property lookups.

import xml.etree.ElementTree as ET

tree = ET.ElementTree(file = "foo.xml")
d = {}
for ds in tree.findall("datasource"):

name = ds.find('name').text
d[name] = {}
print 'datasource =', name

for i in ds.findall('*'):
#for i in ds.getiterator():  # also works

if i.tag in ('datasource', 'name'):
continue

print '',i.tag, "=", i.text
d[name][i.tag] = i.text

print

print d

*

The information transmitted is intended only for the person or entity to which 
it is addressed and may contain confidential, proprietary, and/or privileged 
material. Any review, retransmission, dissemination or other use of, or taking 
of any action in reliance upon this information by persons or entities other 
than the intended recipient is prohibited. If you received this in error, 
please contact the sender and delete the material from all computers. GA621


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Problems with wxPython

[David Anderson]

Hi, If ther's anyone who knows pretty much about wxPython can e-mail me? I'm
having some trouble in dealing with some guis here, I would thank u very
much if you could help me
bye
[]'s
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Re: Need help calling a proprietary C DLL from Python

[Craig]

On Mar 23, 7:59 pm, Dennis Lee Bieber <[EMAIL PROTECTED]> wrote:
> On Sun, 23 Mar 2008 14:24:52 -0700 (PDT), Craig <[EMAIL PROTECTED]>
> declaimed the following in comp.lang.python:
>
>
>
> > This dll was designed to be used from either C or Visual Basic 6.
>
> > I have the declare statements for VB6, if that helps.
>
> Probably not that much -- I'd bet it's full of variant records 
>
>
>
> > Based on the results I have so far (and I have tried MANY permutations
> > like trying to use the LPSTR for SecKey and PriKey which are returned
> > as is TypeDef), it looks like SecKey and PriKey are being used as data
> > instead of pointers.
>
> > For this, I try:
> > LPSTR = c_char_p
> > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPSTR, LPBSTR,
> > LPSTR]
> > SrchKey =
> > windll.oleaut32.SysAllocStringByteLen("MSD19DN
> > \x00", 41)
> > SecKey = create_string_buffer(41)
> > SecKey.raw = "1234567890123456789012345678901234567890"
> > PriKey =
> > windll.oleaut32.SysAllocStringByteLen("ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234\x00",
> > 41)
> > TypeDef = create_string_buffer(128)
> > TypeDef.raw = "X".center(128, "X")
> > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > byref(c_void_p(SrchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > and I get:
> > Traceback (most recent call last):
> >   File "C:\temp\vbisam_test_2.py", line 158, in 
> > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > byref(c_void_p(S
> > rchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > WindowsError: exception: access violation reading 0x3433322D
>
> > I notice that SecKey.raw starts with "1234" and the exception address
> > is 0x3433322D, which is "432-".
>
> 0x2D is 4 less than the expected 0x31...
>
>
>
> > And, changing to:
> > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPBSTR, LPSTR,
> > LPSTR]
> > PriKey = create_string_buffer(41)
> > PriKey.raw = "ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234"
> > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > byref(c_void_p(SrchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > I then get:
> > Traceback (most recent call last):
> >   File "C:\temp\vbisam_test_2.py", line 159, in 
> > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > byref(c_void_p(S
> > rchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > WindowsError: exception: access violation reading 0x4443423D
>
> > I notice that PriKey.raw starts with "ABCD" and the exception address
> > is 0x4443423D, which is "DBC=".
>
> ... and 0x3D is 4 less than the expected 0x41
>
> Which leads me to suspect that BSTR are a structure, not a plain
> string, in which the address given is supposed to be prefaced with a
> length value. IOWs, something like:
>
> ||--|
> ^^  C-string data
> ||Address to be passed
> |(address - 4) to get to a length count field
>
> Confirmed:http://msdn2.microsoft.com/en-us/library/ms221069(VS.85).aspx
>
> (the URL is from HTTP through to the end, including .aspx)
>
> Creating such may not be difficult -- but passing it to the DLL
> could be. I don't know if ctypes allows pointer arithmetic.
>
> ctypes OLESTR is a c_wchar_p, but that is still a c-style string with no
> length prefix.
>
> The only mention of BSTR in the win32 extensions is in text that
> implies that the win32 extension library takes care of converting
> from/to BSTR and Python strings transparently -- but that won't work for
> your third-party library I suspect.
>
> Might have to beg the author(s) of ctypes to add a BSTR type to the
> list of those supported... as I can find no means of tweaking the
> address computed by byref() to point somewhere into a structure rather
> than the beginning of the structure.
>
> >>> pk = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 12)
> >>> pk
> 1373844
> >>> id(pk)
> 18941724
> >>> ctypes.string_at(pk)
> '1234567890'
> >>> ctypes.string_at(pk-4, 20)
>
> '\x0c\x00\x00\x001234567890\x00\x01\x00\x00\x00\x00'
>
>
>
> Okay, the return value from SysAlloc... IS the integer representing
> the address of a BSTR structure (IE, the address four bytes in from the
> real memory start)... Note how backing up 4 bytes reveals the BSTR
> length field
>
> What happens if you just pass that item as-is, no byref(), no
> conversion to ctypes pointer types...
>
> PriKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
> SecKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
>
> res = VmxGet(   byref(hwmcb),
> byref(SecIndex),
> byref(Option),
> byref(c_void_p(SrchKey)),
> SecKey,
> PriKey,
> TypeDef )
>
> >>> PriKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
> >>> ctype

python, dbus and pointers help.

[Glich]

'''
hello, using pidgin instant messenger I can get the value of 'message'
when one is being sent but,
I dont know how to chage the value of message.

from the documentation (http://developer.pidgin.im/doxygen/dev/html/
conversation-signals.html#sending-im-msg):
_
sending-im-msg:

Emitted before sending an IM to a user. message is a pointer to the
message string, so the plugin can replace the message before being
sent.
_

I think python get's a copy of the message (this is just a guess). How
can I change the message before it is sent?

Thanks.
The code is taken from http://developer.pidgin.im/wiki/DbusHowto#Furtherreading
and changed only a small amount.
'''

#!/usr/bin/env python

def cb_func(account, rec, message):
#change message here somehow?
print message

import dbus, gobject
from dbus.mainloop.glib import DBusGMainLoop
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = dbus.SessionBus()

bus.add_signal_receiver(cb_func,
 
dbus_interface="im.pidgin.purple.PurpleInterface",
signal_name="SendingImMsg")

loop = gobject.MainLoop()
loop.run()
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Re: python, dbus and pointers help.

[Glich]

or a way of letting me see the message then cancel sending it then I
could create a new message and send that one. but I cant see this in
the documentation
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Re: Problems with wxPython

[Frank Niessink]

Hi David,

2008/3/24, David Anderson <[EMAIL PROTECTED]>:
> Hi, If ther's anyone who knows pretty much about wxPython can e-mail me? I'm
> having some trouble in dealing with some guis here, I would thank u very
> much if you could help me

You should subscribe to the wxPython users mailinglist and ask there.
It's a very helpful mailinglist. Robin Dunn (wxPython author) is very
active in answering questions from wxPython users.

See http://www.wxpython.org/maillist.php

Cheers, Frank
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Is IronPython real Python?

[jmDesktop]

I know that IronPython and CPython are different in that one does not
use the .net framework, but are they both really the same Python
language.  From my basic understanding, it will depend on what the
programmer's goal is as to which of the two would be used, but I
didn't know if they were really the same language.

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Re: Is IronPython real Python?

[Mike Driscoll]

On Mar 24, 12:00 pm, jmDesktop <[EMAIL PROTECTED]> wrote:
> I know that IronPython and CPython are different in that one does not
> use the .net framework, but are they both really the same Python
> language.  From my basic understanding, it will depend on what the
> programmer's goal is as to which of the two would be used, but I
> didn't know if they were really the same language.

I would say that they're mostly the same. IronPython allows the
developer to use any of the .NET libraries within their Python
program, much like Jython allows Python to import Java libraries.

The main IronPython website has a wiki that outlines the differences:

http://www.codeplex.com/IronPython/Wiki/View.aspx?title=Differences&referringTitle=Home

Mike
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Re: Installing Mutagen Package On Windows

[Gabriel Genellina]

En Mon, 24 Mar 2008 03:25:02 -0300, Benjamin Serrato  
<[EMAIL PROTECTED]> escribió:

> Hey, I've run into another problem. I am trying to install the Mutagen
> package to use as my first useful program, but can't figure out how to
> install it on windows. The README says it is a simple application of--
>
> Installing
> --
>   $ ./setup.py build
>   $ su -c "./setup.py install"
>
> --but I ran c:\>python c:\python25\tools\scripts\setup.py build and did
> similarly for setup.py. I also added c:\python25 and
> c:\python25\tools\scripts to my path, but this hasn't worked. I have

The setup.by you have to run is the one included in the Mutagen package,  
not that one.
Unless the author provides more specific instructions, the usual way is:

- Unpack the archive into any temporary directory
- Open a console (cmd) and change to that temporary directory (cd  
c:\some\temp\dir)
- Execute this command:
python setup.py install
- That's all

If you get any error, post the whole error message here, but for specific  
help on the package it would be better to contact the author directly.

-- 
Gabriel Genellina

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Serving an external web site which requires authentication

[Kaze]

Hi,

I need your suggestions about the topic.
Actually, I'm not sure where to start but basically, I want to make
something like;
(I have an account on a site which requires log-in)

- I'll be logged-in to that site with my account in my server.
- And when a user connects to my site, I'll forward him/her to that
site, using my account even if he/she doesn't have an account on that
site...

probably, I need to develop a proxy to do this, but I'm not sure...
(I'm developing a django site)

I really appreciate your ideas.
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importing package contents from multiple places in PYTHONPATH

[joshetomlinson]

Hi all,

I'm new to python, and am trying to determine if it's possible to do
the following...

I have a directory structure like this, with both 'dir1' and 'dir2' in
my PYTHONPATH

dir1/
  foo/
__init__.py
a.py
b.py

dir2/
  foo/
__init__.py
a.py
c.py

I'd like to be able to:

python> import foo.a, foo.b, foo.c

I'd hope for package 'foo.a' to come from dir1 since it was first on
the path, with 'foo.b' and 'foo.c' coming form dir1 and dir2
respectively.

I understand that python stops once it encounters the first 'foo'
package in PYTHONPATH, but I was wondering if there was a way around
this.  I've had some success modifying __path__ in the foo/__init__.py
files, but am unsure if this is the best approach.  Perhaps there's a
way to do this with import hooks?

Is there a precedent for this type of thing?

Thanks in advance,
Josh
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ANN: Tobu 0.4j

[AK]

This is an initial announcement.

Tobu is a freeform database / tagger / PIM and more. It works in both 
Linux and Windows and uses wxPython framework and pysqlite.

Comments, suggestions, feature requests and critique are gladly
appreciated.

Tutorial with links to download page and to graphical overview page is 
located at the following link. It's best to start with graphical 
overview page that shows screenshots of main window and menus with 
thorough explanations of functionality of most items.

http://www.lightbird.net/tobu/



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behavior varied between empty string '' and empty list []

[Tzury Bar Yochay]

while I can invoke methods of empty string '' right in typing
(''.join(), etc.) I can't do the same with empty list

example:

>>> a = [1,2,3]
>>> b = [].extend(a)
>>> b
>>> b = []
>>> b.extend(a)
>>> b
[1,2,3]

I would not use b = a since I don't want changes on 'b' to apply on
'a'

do you think this should be available on lists to invoke method
directly?
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Impersonate another user (Guest) on Windows

[Giampaolo Rodola']

Hi,
I'm trying to write a plug-in for a ftp server of mine to permit the
integration with accounts defined on the Windows system.
What I basically need is impersonating a user, execute e filesystem
call (e.g. create a directory via os.mkdir()) and then switch back to
the original user (Administrator).
I wrote down this simple class which seems to fit pretty well for my
purposes:

class WinNTAuthorizer:

def impersonate_user(self, username, password):
self.impersonated_user_handler = win32security.LogonUser(
   username,
   None,
   password,
   win32con.LOGON32_LOGON_INTERACTIVE,
   win32con.LOGON32_PROVIDER_DEFAULT)
 
win32security.ImpersonateLoggedOnUser(self.impersonated_user_handler)

def terminate_impersonation(self):
win32security.RevertToSelf()
self.impersonated_user_handler.Close()


What I need now is impersonating the Guest user to handle the
anonymous logins (which it's exactly what IIS FTPd does) but I don't
know how to do it.
Does Guest account has a password or do I have to use something
different than LogonUser to manage it?
Could someone point me in the right direction?

Thanks in advance.


--- Giampaolo
http://code.google.com/p/pyftpdlib
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Re: Problems with wxPython

[David Anderson]

Thanx

On Mon, Mar 24, 2008 at 2:00 PM, Frank Niessink <[EMAIL PROTECTED]> wrote:

> Hi David,
>
> 2008/3/24, David Anderson <[EMAIL PROTECTED]>:
> > Hi, If ther's anyone who knows pretty much about wxPython can e-mail me?
> I'm
> > having some trouble in dealing with some guis here, I would thank u very
> > much if you could help me
>
> You should subscribe to the wxPython users mailinglist and ask there.
> It's a very helpful mailinglist. Robin Dunn (wxPython author) is very
> active in answering questions from wxPython users.
>
> See http://www.wxpython.org/maillist.php
>
> Cheers, Frank
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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Re: importing package contents from multiple places in PYTHONPATH

[Gabriel Genellina]

En Mon, 24 Mar 2008 15:06:51 -0300, <[EMAIL PROTECTED]> escribió:

> Hi all,
>
> I'm new to python, and am trying to determine if it's possible to do
> the following...
>
> I have a directory structure like this, with both 'dir1' and 'dir2' in
> my PYTHONPATH
>
> dir1/
>   foo/
> __init__.py
> a.py
> b.py
>
> dir2/
>   foo/
> __init__.py
> a.py
> c.py
>
> I'd like to be able to:
>
> python> import foo.a, foo.b, foo.c
>
> I'd hope for package 'foo.a' to come from dir1 since it was first on
> the path, with 'foo.b' and 'foo.c' coming form dir1 and dir2
> respectively.

Yes. Note that dir2/foo/__init__.py is not used at all and it's just  
confusing. And a.py (in dir2) won't be found inside the package but any  
"import a" from c.py will import that one instead of the one at dir1.  
dir2/foo is just a "bag", not a "package" :)

> I understand that python stops once it encounters the first 'foo'
> package in PYTHONPATH, but I was wondering if there was a way around
> this.  I've had some success modifying __path__ in the foo/__init__.py
> files, but am unsure if this is the best approach.

I think it is the simplest approach, if not the only one...

> Perhaps there's a
> way to do this with import hooks?

Perhaps... But appending a single item to __path__ is simple enough to  
stop further thinking from my side :)

Anyway, why do you want to do that? Can't use a different name for  
dir2/foo, and perhaps import its modules from inside dir1/foo/__init__.py?


-- 
Gabriel Genellina

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New to group

[pythonnubie]

Hi  Everyone

I  am new to programming in general although I  have  read alot and
done alot of experimentation  as well  as researched afew languages
namely java python and visual basic . My conclusion  is that  python
is one of the best because it  eliminates the need to learn about
access  modifiers  and  form handlers so  a user can concentrate
primarliy on the nuts and bolts of the language .

i  have  come across my first exeption using randrange . The exeption
is " no such  attribute " in  module random

platform  is xp  home  and the python  build is activestate 2.5

All help much appreciated !

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Re: behavior varied between empty string '' and empty list []

[Gabriel Genellina]

En Mon, 24 Mar 2008 15:22:43 -0300, Tzury Bar Yochay  
<[EMAIL PROTECTED]> escribió:

> while I can invoke methods of empty string '' right in typing
> (''.join(), etc.) I can't do the same with empty list
>
> example:
>
 a = [1,2,3]
 b = [].extend(a)
 b
 b = []
 b.extend(a)
 b
> [1,2,3]

extend() -like most mutating methods- does not return the list, it returns  
None.
Your empty list grow the 3 additional items, but since there were no  
additional references to it, got destroyed.

> I would not use b = a since I don't want changes on 'b' to apply on
> 'a'

Try with b = list(a)

> do you think this should be available on lists to invoke method
> directly?

You already can. Your example is misleading because you used b with two  
meanings.
(Compare the *usage* of each variable/value, not their names). This is  
equivalent to the second part of your example:

py> a = [1,2,3]
py> b = []
py> b.extend(a)
py> b
[1, 2, 3]

and this is the first part:

py> a = [1,2,3]
py> b = []
py> c = b.extend(a)
py> c
py> b
[1, 2, 3]

except that in your original example, the empty list had no name so you  
cannot see how it changed.

-- 
Gabriel Genellina

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Re: New to group

[Jeff]

What does the code look like?
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Re: New to group

[Mike Driscoll]

On Mar 24, 1:53 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
> Hi  Everyone
>
> I  am new to programming in general although I  have  read alot and
> done alot of experimentation  as well  as researched afew languages
> namely java python and visual basic . My conclusion  is that  python
> is one of the best because it  eliminates the need to learn about
> access  modifiers  and  form handlers so  a user can concentrate
> primarliy on the nuts and bolts of the language .
>
> i  have  come across my first exeption using randrange . The exeption
> is " no such  attribute " in  module random
>
> platform  is xp  home  and the python  build is activestate 2.5
>
> All help much appreciated !

Please post the code that throws this error along with the entire
traceback.

Thanks,

Mike
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Re: New to group

[pythonnubie]

On Mar 24, 11:57 am, Jeff <[EMAIL PROTECTED]> wrote:
> What does the code look like?

# Random Access
# Demonstrates string indexing
# Michael Dawson - 1/27/03

import random

word = "index"
print "The word is: ", word, "\n"

high = len(word)
low = -len(word)
for i in range(10):
position = random.randrange(low, high)
print "word[", position, "]\t", word[position]

raw_input("\n\nPress the enter key to exit.")

The  code is an exerp from  a  chm file . I  am petty sutre I  am
nmot  getting  a  char  map error from  the copy/paste ! it looks
simple enough !

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Re: New to group

[George Sakkis]

On Mar 24, 2:53 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
> Hi  Everyone
>
> I  am new to programming in general although I  have  read alot and
> done alot of experimentation  as well  as researched afew languages
> namely java python and visual basic . My conclusion  is that  python
> is one of the best because it  eliminates the need to learn about
> access  modifiers  and  form handlers so  a user can concentrate
> primarliy on the nuts and bolts of the language .
>
> i  have  come across my first exeption using randrange . The exeption
> is " no such  attribute " in  module random
>
> platform  is xp  home  and the python  build is activestate 2.5

Welcome aboard!

There's definitely a randrange function in the random module, so
something else must be wrong. To get the most out of this list and
minimize wasted bandwidth, the most effective way usually consists of
copying and pasting:
1. The offending code (or just the relevant part if it's too big).
2. The full traceback of the raised exception.

Regards,
George
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Re: New to group

[Robert Kern]

pythonnubie wrote:
> On Mar 24, 11:57 am, Jeff <[EMAIL PROTECTED]> wrote:
>> What does the code look like?
> 
> # Random Access
> # Demonstrates string indexing
> # Michael Dawson - 1/27/03
> 
> import random

Make sure that you do not have a random.py module in the current directory. 
Python checks the current directory for modules before the standard directories.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco

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Re: New to group

[pythonnubie]

>
> > i  have  come across my first exeption using randrange . The exeption
> > is " no such  attribute " in  module random
>
> > platform  is xp  home  and the python  build is activestate 2.5
>
> Welcome aboard!
>
> There's definitely a randrange function in the random module, so
> something else must be wrong. To get the most out of this list and
> minimize wasted bandwidth, the most effective way usually consists of
> copying and pasting:
> 1. The offending code (or just the relevant part if it's too big).
> 2. The full traceback of the raised exception.
>
> Regards,
> George

Hwere is the complete traceback ! >>> The word is:  index

Traceback (most recent call last):
  File "F:\Python25\Lib\site-packages\pythonwin\pywin\framework
\scriptutils.py", line 307, in RunScript
debugger.run(codeObject, __main__.__dict__, start_stepping=0)
  File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
\__init__.py", line 60, in run
_GetCurrentDebugger().run(cmd, globals,locals, start_stepping)
  File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
\debugger.py", line 631, in run
exec cmd in globals, locals
  File "F:\Documents and Settings\Mark\My Documents\rand.py", line 5,
in 
import random
  File "F:\Documents and Settings\Mark\My Documents\random.py", line
13, in 
distributions on the real line:
AttributeError: 'module' object has no attribute 'randrange'
>>>
Why  would it say  it can't find the function ?

Mark


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Re: New to group

[George Sakkis]

On Mar 24, 3:03 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
> On Mar 24, 11:57 am, Jeff <[EMAIL PROTECTED]> wrote:
>
> > What does the code look like?
>
> # Random Access
> # Demonstrates string indexing
> # Michael Dawson - 1/27/03
>
> import random
>
> word = "index"
> print "The word is: ", word, "\n"
>
> high = len(word)
> low = -len(word)
> for i in range(10):
> position = random.randrange(low, high)
> print "word[", position, "]\t", word[position]
>
> raw_input("\n\nPress the enter key to exit.")
>
> The  code is an exerp from  a  chm file . I  am petty sutre I  am
> nmot  getting  a  char  map error from  the copy/paste ! it looks
> simple enough !

It works fine on on Windows with standard Python 2.5. Something is
probably wrong with your ActiveState installation.

George
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Re: New to group

[Jeffrey Froman]

pythonnubie wrote:

> The exeption
> is " no such  attribute " in  module random

Is your own source file named "random.py" by chance? If so, rename it, and
be sure to remove the leftover random.pyc file as well.


Jeffrey
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Re: New to group

[Peter Otten]

pythonnubie wrote:

> On Mar 24, 11:57 am, Jeff <[EMAIL PROTECTED]> wrote:
>> What does the code look like?
> 
> # Random Access
> # Demonstrates string indexing
> # Michael Dawson - 1/27/03
> 
> import random
> 
> word = "index"
> print "The word is: ", word, "\n"
> 
> high = len(word)
> low = -len(word)
> for i in range(10):
> position = random.randrange(low, high)
> print "word[", position, "]\t", word[position]
> 
> raw_input("\n\nPress the enter key to exit.")
> 
> The  code is an exerp from  a  chm file . I  am petty sutre I  am
> nmot  getting  a  char  map error from  the copy/paste ! it looks
> simple enough !

You have probably called your script random.py, and now it imports itself
instead of the random.py module in Python's standard library.

Rename your script to myrandom.py, remove the compiled version random.pyc in
the same folder, and you should be able to run it successfully.

Peter
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Re: New to group

[George Sakkis]

On Mar 24, 3:13 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
> > > i  have  come across my first exeption using randrange . The exeption
> > > is " no such  attribute " in  module random
>
> > > platform  is xp  home  and the python  build is activestate 2.5
>
> > Welcome aboard!
>
> > There's definitely a randrange function in the random module, so
> > something else must be wrong. To get the most out of this list and
> > minimize wasted bandwidth, the most effective way usually consists of
> > copying and pasting:
> > 1. The offending code (or just the relevant part if it's too big).
> > 2. The full traceback of the raised exception.
>
> > Regards,
> > George
>
> Hwere is the complete traceback ! >>> The word is:  index
>
> Traceback (most recent call last):
>   File "F:\Python25\Lib\site-packages\pythonwin\pywin\framework
> \scriptutils.py", line 307, in RunScript
> debugger.run(codeObject, __main__.__dict__, start_stepping=0)
>   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> \__init__.py", line 60, in run
> _GetCurrentDebugger().run(cmd, globals,locals, start_stepping)
>   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> \debugger.py", line 631, in run
> exec cmd in globals, locals
>   File "F:\Documents and Settings\Mark\My Documents\rand.py", line 5,
> in 
> import random
>   File "F:\Documents and Settings\Mark\My Documents\random.py", line
> 13, in 
> distributions on the real line:
> AttributeError: 'module' object has no attribute 'randrange'
>
> Why  would it say  it can't find the function ?

Because you named your file 'random.py' and it shadows the standard
random module! Change the name to something else, say foo.py, and try
it again.

George

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Re: New to group

[pythonnubie]

On Mar 24, 12:18 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
> On Mar 24, 3:13 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
> > > > i  have  come across my first exeption using randrange . The exeption
> > > > is " no such  attribute " in  module random
>
> > > > platform  is xp  home  and the python  build is activestate 2.5
>
> > > Welcome aboard!
>
> > > There's definitely a randrange function in the random module, so
> > > something else must be wrong. To get the most out of this list and
> > > minimize wasted bandwidth, the most effective way usually consists of
> > > copying and pasting:
> > > 1. The offending code (or just the relevant part if it's too big).
> > > 2. The full traceback of the raised exception.
>
> > > Regards,
> > > George
>
> > Hwere is the complete traceback ! >>> The word is:  index
>
> > Traceback (most recent call last):
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\framework
> > \scriptutils.py", line 307, in RunScript
> >     debugger.run(codeObject, __main__.__dict__, start_stepping=0)
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> > \__init__.py", line 60, in run
> >     _GetCurrentDebugger().run(cmd, globals,locals, start_stepping)
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> > \debugger.py", line 631, in run
> >     exec cmd in globals, locals
> >   File "F:\Documents and Settings\Mark\My Documents\rand.py", line 5,
> > in 
> >     import random
> >   File "F:\Documents and Settings\Mark\My Documents\random.py", line
> > 13, in 
> >     distributions on the real line:
> > AttributeError: 'module' object has no attribute 'randrange'
>
> > Why  would it say  it can't find the function ?
>
> Because you named your file 'random.py' and it shadows the standard
> random module! Change the name to something else, say foo.py, and try
> it again.
>
> George- Hide quoted text -
>
> - Show quoted text -

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Re: Need help calling a proprietary C DLL from Python

[Craig]

On Mar 24, 12:27 pm, Craig <[EMAIL PROTECTED]> wrote:
> On Mar 23, 7:59 pm, Dennis Lee Bieber <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Sun, 23 Mar 2008 14:24:52 -0700 (PDT), Craig <[EMAIL PROTECTED]>
> > declaimed the following in comp.lang.python:
>
> > > This dll was designed to be used from either C or Visual Basic 6.
>
> > > I have the declare statements for VB6, if that helps.
>
> > Probably not that much -- I'd bet it's full of variant records 
>
> > > Based on the results I have so far (and I have tried MANY permutations
> > > like trying to use the LPSTR for SecKey and PriKey which are returned
> > > as is TypeDef), it looks like SecKey and PriKey are being used as data
> > > instead of pointers.
>
> > > For this, I try:
> > > LPSTR = c_char_p
> > > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPSTR, LPBSTR,
> > > LPSTR]
> > > SrchKey =
> > > windll.oleaut32.SysAllocStringByteLen("MSD19DN
> > > \x00", 41)
> > > SecKey = create_string_buffer(41)
> > > SecKey.raw = "1234567890123456789012345678901234567890"
> > > PriKey =
> > > windll.oleaut32.SysAllocStringByteLen("ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234\x00",
> > > 41)
> > > TypeDef = create_string_buffer(128)
> > > TypeDef.raw = "X".center(128, "X")
> > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > byref(c_void_p(SrchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > > and I get:
> > > Traceback (most recent call last):
> > >   File "C:\temp\vbisam_test_2.py", line 158, in 
> > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > byref(c_void_p(S
> > > rchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > > WindowsError: exception: access violation reading 0x3433322D
>
> > > I notice that SecKey.raw starts with "1234" and the exception address
> > > is 0x3433322D, which is "432-".
>
> > 0x2D is 4 less than the expected 0x31...
>
> > > And, changing to:
> > > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPBSTR, LPSTR,
> > > LPSTR]
> > > PriKey = create_string_buffer(41)
> > > PriKey.raw = "ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234"
> > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > byref(c_void_p(SrchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > > I then get:
> > > Traceback (most recent call last):
> > >   File "C:\temp\vbisam_test_2.py", line 159, in 
> > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > byref(c_void_p(S
> > > rchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > > WindowsError: exception: access violation reading 0x4443423D
>
> > > I notice that PriKey.raw starts with "ABCD" and the exception address
> > > is 0x4443423D, which is "DBC=".
>
> > ... and 0x3D is 4 less than the expected 0x41
>
> > Which leads me to suspect that BSTR are a structure, not a plain
> > string, in which the address given is supposed to be prefaced with a
> > length value. IOWs, something like:
>
> > ||--|
> > ^^  C-string data
> > ||Address to be passed
> > |(address - 4) to get to a length count field
>
> > Confirmed:http://msdn2.microsoft.com/en-us/library/ms221069(VS.85).aspx
>
> > (the URL is from HTTP through to the end, including .aspx)
>
> > Creating such may not be difficult -- but passing it to the DLL
> > could be. I don't know if ctypes allows pointer arithmetic.
>
> > ctypes OLESTR is a c_wchar_p, but that is still a c-style string with no
> > length prefix.
>
> > The only mention of BSTR in the win32 extensions is in text that
> > implies that the win32 extension library takes care of converting
> > from/to BSTR and Python strings transparently -- but that won't work for
> > your third-party library I suspect.
>
> > Might have to beg the author(s) of ctypes to add a BSTR type to the
> > list of those supported... as I can find no means of tweaking the
> > address computed by byref() to point somewhere into a structure rather
> > than the beginning of the structure.
>
> > >>> pk = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 12)
> > >>> pk
> > 1373844
> > >>> id(pk)
> > 18941724
> > >>> ctypes.string_at(pk)
> > '1234567890'
> > >>> ctypes.string_at(pk-4, 20)
>
> > '\x0c\x00\x00\x001234567890\x00\x01\x00\x00\x00\x00'
>
> > Okay, the return value from SysAlloc... IS the integer representing
> > the address of a BSTR structure (IE, the address four bytes in from the
> > real memory start)... Note how backing up 4 bytes reveals the BSTR
> > length field
>
> > What happens if you just pass that item as-is, no byref(), no
> > conversion to ctypes pointer types...
>
> > PriKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
> > SecKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
>
> > res = VmxGet(   byref(hwmcb),
> > byref(SecIndex),
> > byref(Option),
> > byref(c_voi

Re: beginners question about return value of re.split

[klaus]

On Fri, 21 Mar 2008 13:34:27 -0700, John Machin wrote:

> On Mar 22, 2:53 am, klaus <[EMAIL PROTECTED]> wrote:
>> On Fri, 21 Mar 2008 10:31:20 -0500, Tim Chase wrote:
>>
>> <..>
>>
>> Ok thank you !
>>
>> I think I got a bit lost in all the possibilities python has to offer.
> 
> IMHO you got more than a bit lost. You seem to have stumbled on a
> possibly unintended side effect of re.split.
> 
> What is your underlying goal?
> 
> If you want merely to split on '-', use datum.split('-').
> 
> If you want to verify the split results as matching patterns (4 digits,
> 2 digits, 2 digits), use something like this:
> 
> | >>> import re
> | >>> datum = '2008-03-14'
> | >>> pattern = r'^(\d\d\d\d)-(\d\d)-(\d\d)\Z' You may notice two
> differences between my pattern and yours ... 
> | >>> mobj = re.match(pattern, datum) | >>> mobj.groups()
> | ('2008', '03', '14')
> 
> But what are you going to do with the result? If the resemblance between
> '2008-03-14' and a date is not accidental, you may wish to consider
> going straight from a string to a datetime or date object, e.g.
> 
> | >>> import datetime
> | >>> dt = datetime.datetime.strptime(datum, '%Y-%m-%d') 
> | >>> dt
> | datetime.datetime(2008, 3, 14, 0, 0) 
> | >>> d =
>  datetime.datetime.date(dt)
> | >>> d
> | datetime.date(2008, 3, 14)
> 
> HTH,
> John

Ok, sorry for my late reply. I got caught up in a fight with easterbunnys
over some extraordinary large, fruitty and fertile eggs. Some creatures 
take Easter just to serious and it is not even mating season ! Can you 
believe that ?

:-)

Anyway, the underlying goal was to verify user input and to split up the 
date so that I could easily convert it to another format. Among others, 
an url and for a database querry. And I have succeeded in that.

Thank you again; for taking the time to explain - and to question.

KL.
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Re: PyCon video editing

[Mike Driscoll]

On Mar 18, 10:09 am, amk <[EMAIL PROTECTED]> wrote:
> On Mar 17, 10:00 pm, dundeemt <[EMAIL PROTECTED]> wrote:
>
> > Anyone know who is in charge of this?  I'd like to help out if I
> > could.
>
> I am, but haven't set anything up yet, such as a mailing list or a
> host for the video.
> I'll update the wiki pagehttp://wiki.python.org/moin/PyConRecordingBof
> with news/further developments (you can create a wiki account and
> follow the envelope icon at the upper right
> to be notified of changes via e-mail).
>
> --amk

Somebody has stuck a few videos on Youtube already: 
http://www.youtube.com/user/pycon08

Mike
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Re: Is this doable

[Tobiah]

> I have a little problem. I have a script that is in the scheduler
> (win32). But every now and then I update this script and I dont want
> to go to every computer and update it.

Can't you just put the script on a network share?

Tobiah

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SoC project: Python-Haskell bridge - request for feedback

[Michał Janeczek]

Hi,

I am a student interested in participating in this year's SoC.
At http://tsk.ch.uj.edu.pl/~janeczek/socapp.html (and also below
in this email) you can find a draft of my project proposal.

I'd like to ask you to comment on it, especially the deliverables
part. Are you interested in such a project, and if yes, what features
would be most important to you? Is anything missing, or should
something get more priority or attention?

Regards,
Michal


Python-Haskell bridge
=

Description
---

This project will seek to provide a comprehensive, high level (and thus
easy to use) binding between Haskell and Python programming languages.
This will allow using libraries of either side from each language.


Benefits for Python
---

* Robust, high assurance components

It might be beneficial to implement safety-critical components
in a strongly, statically typed language, using Python to keep
them together. Cryptography or authentication modules can be
an example.

* Performance improvements for speed-critical code

Haskell compiled to native code is typically an order of magnitude
faster than Python. Aside from that, advanced language features
(such as multicore parallel runtime, very lightweight threads
and software transactional memory) further serve in improving the
performance. Haskell could become a safe, high level alternative
to commonly used C extensions.

* Access to sophisticated libraries

While its set of libraries is not as comprehensive as that of
Python, Haskell can still offer some well tested, efficient
libraries. Examples might be rich parser combinator libraries
(like Parsec) and persistent, functional data structures.
QuickCheck testing library could also be used to drive analysis
of Python code.


Benefits for Haskell


The project would benefit Haskell by providing it with access to
an impressive suite of libraries. It also has a potential to help
Haskell adoption, by mitigating risk of using Haskell in a project.


Deliverables


* A low level library to access Python objects from Haskell

* A set of low level functions to convert built-in data types
  between Haskell and Python (strings, numbers, lists,
  dictionaries, functions, generators etc.)

* A higher level library allowing easy (transparent) access to
  Python functions from Haskell, and wrapping Haskell functions
  for Python to access

* A way to easily derive conversion functions for user-defined
  data types/objects. Functions derived in such a way should
  work well with both low level and high level access libraries

* Documentation and a set of examples for all of above


Optional goals
--

These are of lower priority, and might require a fair amount of work.
I would like to implement most of them, if technically feasible. If
they don't fit into Summer of Code timeframe, I am planning to finish
afterwards.

* A Python module for accessing functions from Haskell modules without
  manual wrapping (such wrapping should be already easy thanks to the
  high level library). It'd be accomplished through GHC api - if it
  allows it. The Haskell side of the high level library will already
  support such mode of operation

* Extend and refactor the code, to make it support other similar
  dynamic languages. This is a lot of work, and definitely out of
  the scope of Summer of Code project, but some design decisions
  may be influenced by this.


Related projects


They (and quite possibly some others) will be referenced for ideas.

* MissingPy

Provides a one way, low level binding to Python. Some of the code
can be possibly reused, especially data conversion functions. It
doesn't seem to export all features, in particular function
callbacks are not supported

* HaXR

XML-RPC binding for Haskell. It could provide inspiration for
reconciling Haskell and Python type systems, resulting in a
friendly interface

* rocaml

A binding between Ruby and OCaml
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Re: encoding/decoding issue with python2.5 and pymssql

[Rob Williscroft]

Tzury Bar Yochay wrote in news:3a6c32fe-e7c1-4230-882d-efb3415196c1
@b1g2000hsg.googlegroups.com in comp.lang.python:

> for example:
> the value
> 'EE604EE3-4AB0-4EE7-AF4D-018124393CD7'
> is represent as
> '\xe3N`\xee\xb0J\xe7N\xafM\x01\x81$9<\xd7'
> 

from uuid import *

u = UUID( bytes = '\xe3N`\xee\xb0J\xe7N\xafM\x01\x81$9<\xd7')
print u

u = UUID( bytes_le = '\xe3N`\xee\xb0J\xe7N\xafM\x01\x81$9<\xd7')
print u

The "bytes_le" version prints: ee604ee3-4ab0-4ee7-af4d-018124393cd7
so I guess, this is what mysql is returning.

http://docs.python.org/lib/module-uuid.html

Rob.
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Paramiko bugs out on windows 2003 server

[Tarun Kapoor]

I am using the paramiko library to pull a data from a server using SFTP.
It works perfect on a windows xp machine but bugs out a windows 2003
server. I get the following error:
Traceback (most recent call last):
  File "S:\Temp\ftpBOA.py", line 5, in ?
import paramiko
  File "C:\Python23\lib\paramiko\__init__.py", line 69, in ?
from transport import randpool, SecurityOptions, Transport
  File "C:\Python23\lib\paramiko\transport.py", line 32, in ?
from paramiko import util
  File "C:\Python23\lib\paramiko\util.py", line 31, in ?
from paramiko.common import *
  File "C:\Python23\lib\paramiko\common.py", line 98, in ?
from osrandom import OSRandomPool
  File "C:\Python23\lib\paramiko\osrandom.py", line 54, in ?
raise ImportError("Cannot find OS entropy source")
ImportError: Cannot find OS entropy source

Anyone knows how to solve it ?
Tarun Kapoor



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Reading new mail from outlook

[SPJ]

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 _vbscript_ 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
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know-it-all with Yahoo! Mobile.  Try it now.
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Reading new mail from outlook using Python

[SPJ]

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 _vbscript_ 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.
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FW:Reading new mail from outlook express using Python

[SPJ]

My previous post was not clear, hence resending this.

-
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



  

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Re: Reading new mail from outlook using Python

[Pete Stapley]

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. 
> 
>  


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Re: Shortcutting the function call stack

[Julien]

Hi all, and thanks a lot for your answers!

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


I have some long functions like my_function1 and my_function2 which
I'd like to alter, but I want to keep the alterations as little as as
possible. I'd like the extra behaviour to be handled by 'hijacker' and
let it decide what the caller function should return. Just adding a
call to 'hijacker' in all of these functions would be ideal for me
because that would be quick to modify them and also easier to
maintain, I believe.

If 'hijacker' thinks it's necessary, it would force the caller
function to return a certain
value, otherwise it would let the caller function do its normal
business.

For while I thought I'd make hijacker a decorator:

@hijacker
def my_function(request):


But that wouldn't work, since some functions need to do some
processing before calling the hijacker. Yet, I think a decorator is
systematically called before the function itself so no prior
processing can be done by the function...

Any idea on how to do that, if that's even possible?

Thanks!

Julien

On Mar 25, 2:06 am, [EMAIL PROTECTED] wrote:
> On Mar 24, 9:48 am, Jason <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Mar 24, 5:21 am, Julien <[EMAIL PROTECTED]> wrote:
>
> > > Hello all,
>
> > > I would like to do something like:
>
> > > def called(arg)
> > > if arg==True:
> > > !!magic!!caller.return 1
>
> > > def caller(arg)
> > > called(arg)
> > > return 2
>
> > > Here, the fake !!!magic!!! represents a statement (which I ignore)
> > > that would make the caller function return a value different from what
> > > it'd return normally.
>
> > > For example, caller(True) would return 1, and caller(False) would
> > > return 2. The reason I want that is because I don't want the caller
> > > function to know what's going on in the called function, and be
> > > shortcut if the called function think it's necessary.
>
> > > Would you know if that's possible, and if so, how?
>
> > > I've done a bit of research and I think I've found some good pointers,
> > > in particular using the 'inspect' library:
>
> > > import inspect
>
> > > def called(arg)
> > > if arg==True:
> > > caller_frame = inspect.stack()[1]
> > > ...
>
> > > Here 'caller_frame' contains the frame of the caller function. Now,
> > > how can I make that frame return a particular value?
>
> > > By the way, I'm not really interested in 'called' throwing an
> > > exception and 'caller' catching it. In fact, I want things to remain
> > > completely transparent for 'caller'.
>
> > > Hope that was clear... :/
>
> > > Thanks!
>
> > > Julien
>
> > As Steven wrote, it's not very clear.  If we knew the intent of this,
> > we could perhaps point you to a more useful, maintainable technique.
> > We don't know why you're trying to circumvent the programming language
> > in this case.  Any solution that works as you described will probably
> > be unportable between the different Pythons (CPython, Jython,
> > IronPython, etc).
>
> > Please note that the following code should work, but I've only run it
> > through the interpreter in my brain.  My brain's interpreter is full
> > of Heisenbugs, so you may need to adjust a few things.  Here's my
> > thoughts:
>
> > Given:
> > def First( arg ):
> > Second( arg )
> > return 5
>
> > 1)  If you can modify both functions, change the first function to
> > return a value in certain circumstances:
> > def AltFirst( arg ):
> > value = Second( arg )
> > if value is not None:  return value
> > return 5
>
> > 2)  Raise an exception in Second, and catch that exception above
> > First:
>
> > class SecondExcept(Exception):
> > def __init__(self, value):
> > Exception.__init__(self, 'Spam!')
> > self.value = value
>
> > def Second(arg):
> > if arg == my_conditional_value:
> > raise SecondExcept( 5 )
>
> > # The following could even be put in your own function,
> > # or in a wrapper or decorator for the First function.
> > try:
> > myvalue = First( 'Vikings!' )
> > except SecondExcept, exc:
> > myvalue = exc.value
>
> > When you need to use an exceptional pathway, use an exception.  They
> > aren't just for reporting errors.
>
> Exceptions are a control tool.  There was a 'goto using Exceptions'
> once in the manuals.  I don't see a problem with a local control-flow
> object.  It would appease a number of requests I've read.
>
> for x:
>   for y:
> control.break( 2 )
>
> if a:
>   if b:
> control.fail( 2 )
>
> so

Python 2.2.1 and select()

[Derek Martin]

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:
[] [] []

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...

-- 
Derek D. Martin
http://www.pizzashack.org/
GPG Key ID: 0x81CFE75D



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Re: FW:Reading new mail from outlook express using Python

[Grant Edwards]

On 2008-03-24, SPJ <[EMAIL PROTECTED]> 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.

You can use Outlook's COM interface from Python.  That allows
you to read messages from a mailbox.  I don't know of any way
to get "notified", but you can use the COM interface to poll
the mailbox(es) periodically.

-- 
Grant
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Re: Need help calling a proprietary C DLL from Python

[Craig]

On Mar 24, 3:45 pm, Craig <[EMAIL PROTECTED]> wrote:
> On Mar 24, 12:27 pm, Craig <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Mar 23, 7:59 pm, Dennis Lee Bieber <[EMAIL PROTECTED]> wrote:
>
> > > On Sun, 23 Mar 2008 14:24:52 -0700 (PDT), Craig <[EMAIL PROTECTED]>
> > > declaimed the following in comp.lang.python:
>
> > > > This dll was designed to be used from either C or Visual Basic 6.
>
> > > > I have the declare statements for VB6, if that helps.
>
> > > Probably not that much -- I'd bet it's full of variant records 
>
> > > > Based on the results I have so far (and I have tried MANY permutations
> > > > like trying to use the LPSTR for SecKey and PriKey which are returned
> > > > as is TypeDef), it looks like SecKey and PriKey are being used as data
> > > > instead of pointers.
>
> > > > For this, I try:
> > > > LPSTR = c_char_p
> > > > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPSTR, LPBSTR,
> > > > LPSTR]
> > > > SrchKey =
> > > > windll.oleaut32.SysAllocStringByteLen("MSD19DN
> > > > \x00", 41)
> > > > SecKey = create_string_buffer(41)
> > > > SecKey.raw = "1234567890123456789012345678901234567890"
> > > > PriKey =
> > > > windll.oleaut32.SysAllocStringByteLen("ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234\x00",
> > > > 41)
> > > > TypeDef = create_string_buffer(128)
> > > > TypeDef.raw = "X".center(128, "X")
> > > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > > byref(c_void_p(SrchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > > > and I get:
> > > > Traceback (most recent call last):
> > > >   File "C:\temp\vbisam_test_2.py", line 158, in 
> > > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > > byref(c_void_p(S
> > > > rchKey)), SecKey, byref(c_void_p(PriKey)), TypeDef )
> > > > WindowsError: exception: access violation reading 0x3433322D
>
> > > > I notice that SecKey.raw starts with "1234" and the exception address
> > > > is 0x3433322D, which is "432-".
>
> > > 0x2D is 4 less than the expected 0x31...
>
> > > > And, changing to:
> > > > VmxGet.argtypes = [LPHANDLE, LPSHORT, LPSHORT, LPBSTR, LPBSTR, LPSTR,
> > > > LPSTR]
> > > > PriKey = create_string_buffer(41)
> > > > PriKey.raw = "ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234"
> > > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > > byref(c_void_p(SrchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > > > I then get:
> > > > Traceback (most recent call last):
> > > >   File "C:\temp\vbisam_test_2.py", line 159, in 
> > > > res = VmxGet( byref(hwmcb), byref(SecIndex), byref(Option),
> > > > byref(c_void_p(S
> > > > rchKey)), byref(c_void_p(SecKey)), PriKey, TypeDef )
> > > > WindowsError: exception: access violation reading 0x4443423D
>
> > > > I notice that PriKey.raw starts with "ABCD" and the exception address
> > > > is 0x4443423D, which is "DBC=".
>
> > > ... and 0x3D is 4 less than the expected 0x41
>
> > > Which leads me to suspect that BSTR are a structure, not a plain
> > > string, in which the address given is supposed to be prefaced with a
> > > length value. IOWs, something like:
>
> > > ||--|
> > > ^^  C-string data
> > > ||Address to be passed
> > > |(address - 4) to get to a length count field
>
> > > Confirmed:http://msdn2.microsoft.com/en-us/library/ms221069(VS.85).aspx
>
> > > (the URL is from HTTP through to the end, including .aspx)
>
> > > Creating such may not be difficult -- but passing it to the DLL
> > > could be. I don't know if ctypes allows pointer arithmetic.
>
> > > ctypes OLESTR is a c_wchar_p, but that is still a c-style string with no
> > > length prefix.
>
> > > The only mention of BSTR in the win32 extensions is in text that
> > > implies that the win32 extension library takes care of converting
> > > from/to BSTR and Python strings transparently -- but that won't work for
> > > your third-party library I suspect.
>
> > > Might have to beg the author(s) of ctypes to add a BSTR type to 
> > > the
> > > list of those supported... as I can find no means of tweaking the
> > > address computed by byref() to point somewhere into a structure rather
> > > than the beginning of the structure.
>
> > > >>> pk = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 12)
> > > >>> pk
> > > 1373844
> > > >>> id(pk)
> > > 18941724
> > > >>> ctypes.string_at(pk)
> > > '1234567890'
> > > >>> ctypes.string_at(pk-4, 20)
>
> > > '\x0c\x00\x00\x001234567890\x00\x01\x00\x00\x00\x00'
>
> > > Okay, the return value from SysAlloc... IS the integer 
> > > representing
> > > the address of a BSTR structure (IE, the address four bytes in from the
> > > real memory start)... Note how backing up 4 bytes reveals the BSTR
> > > length field
>
> > > What happens if you just pass that item as-is, no byref(), no
> > > conversion to ctypes pointer types...
>
> > > PriKey = ctypes.windll.oleaut32.SysAllocStringByteLen("1234567890", 41)
> > > SecKey

Re: Paramiko bugs out on windows 2003 server

[John Machin]

On Mar 25, 7:50 am, "Tarun Kapoor" <[EMAIL PROTECTED]> wrote:
> I am using the paramiko library to pull a data from a server using SFTP.
> It works perfect on a windows xp machine but bugs out a windows 2003
> server. I get the following error:
> Traceback (most recent call last):
>   File "S:\Temp\ftpBOA.py", line 5, in ?
> import paramiko
>   File "C:\Python23\lib\paramiko\__init__.py", line 69, in ?
> from transport import randpool, SecurityOptions, Transport
>   File "C:\Python23\lib\paramiko\transport.py", line 32, in ?
> from paramiko import util
>   File "C:\Python23\lib\paramiko\util.py", line 31, in ?
> from paramiko.common import *
>   File "C:\Python23\lib\paramiko\common.py", line 98, in ?
> from osrandom import OSRandomPool
>   File "C:\Python23\lib\paramiko\osrandom.py", line 54, in ?
> raise ImportError("Cannot find OS entropy source")
> ImportError: Cannot find OS entropy source
>
> Anyone knows how to solve it ?

Here's some meta-help:

paramiko seems to be actively maintained and has a mailing list -- see
http://www.lag.net/mailman/listinfo/paramiko -- consider asking on
that list.

Not only is paramiko open source but also you have the source code on
your machine already -- consider looking at C:\Python23\lib\paramiko
\osrandom.py and see if you can nut out what it is complaining about.
Even if you can't, the experience may help you to better answer
questions from the maintainer, who may well not have a Windows 2003
server box upon which to replicate the problem.

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Re: Calling a shared library using C types

[Nathan Harmston]

Hi,

I know this is a pretty simple question but I've spent a while on this and
can't see whats wrong. I'm trying to access a shared library which I've
created called Simulation.so, its created as such (snip from makefile):

all: simulation

simulation: Simulation.so

Simulation.so: Simulation.o Statistics.o
gcc -shared Simulation.o Statistics.o -L/usr/local/lib -lsbml
-lstdc++ -lm -o Simulation.so

Statistics.o: Statistics.c Statistics.h
gcc -fpic -g -O2 -I/usr/include -c Statistics.c

Simulation.o: Simulation.c
gcc -fpic -g -O2 -I/usr/include  -c Simulation.c

and I can load it properly in python

import ctypes
t = ctypes.CDLL('./Simulation.so')
this works fine, I have a simple function I ve put in for testing which just
returns the integer 4. However when I try to access this function it doesnt
work
t.test()
 File "", line 1, in 
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/ctypes/__init__.py",
line 325, in __getattr__
func = self.__getitem__(name)
  File
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/ctypes/__init__.py",
line 330, in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
AttributeError: dlsym(0x81e6b0, test): symbol not found

I've tried using
t.__getattr__("test")
but still have the same exception, I've tried loading the library with mode
= RTLD_GLOBAL aswell and still have no luck. As far I as I can see this
should work? But as I am just starting with ctypes I am sure I doing
something sorry very stupid.

Any pointers would be greatly appreciated,

Many thanks in advance,

Nathan


Im hoping python-list is ok for questions regarding ctypes :S
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Re: Shortcutting the function call stack

[John Machin]

On Mar 25, 9:05 am, Julien <[EMAIL PROTECTED]> wrote:
> Hi all, and thanks a lot for your answers!
>
> 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
>

Your end goal (avoiding duplicate code) is laudable. However most folk
manage to do this without needing to invent arcane control structures
like the COME FROM and the COBOL ALTER verb.

def common_code(arg):
if necessary(arg):
return 1
   # assuming None is not a valid return from myfunc1 etc
   return None

def myfunc1(arg):
return_value = common_code(something)
if return_value is not None:
 return return_value
# continue

# Look, Ma! No decorators!

Those functions could be methods of classes, but IMHO you don't need
anything fancier than that.

You mentioned maintainability. To borrow someone else's advice:
Consider that the next person to maintain your code may know where you
live and may possess a chain-saw.

HTH,
John
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Re: Shortcutting the function call stack

[Arnaud Delobelle]

On Mar 24, 10:05 pm, Julien <[EMAIL PROTECTED]> wrote:
> Hi all, and thanks a lot for your answers!
>
> 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
>
> I have some long functions like my_function1 and my_function2 which
> I'd like to alter, but I want to keep the alterations as little as as
> possible. I'd like the extra behaviour to be handled by 'hijacker' and
> let it decide what the caller function should return. Just adding a
> call to 'hijacker' in all of these functions would be ideal for me
> because that would be quick to modify them and also easier to
> maintain, I believe.
>
> If 'hijacker' thinks it's necessary, it would force the caller
> function to return a certain
> value, otherwise it would let the caller function do its normal
> business.
>
> For while I thought I'd make hijacker a decorator:
>
> @hijacker
> def my_function(request):
> 
>
> But that wouldn't work, since some functions need to do some
> processing before calling the hijacker. Yet, I think a decorator is
> systematically called before the function itself so no prior
> processing can be done by the function...
>
> Any idea on how to do that, if that's even possible?

Of course it's possible ;), with the combination of an exception and a
decorator.  See example below.  However I would seriously doubt the
maintainability of such practices...

# - hijack.py 
from functools import wraps

class HijackReturn(Exception):
def __init__(self, val):
self.val = val

def hijack(f):
@wraps(f)
def hijacked(*args, **kwargs):
try:
return f(*args, **kwargs)
except HijackReturn, e:
return e.val
return hijacked

@hijack
def foo(x):
x = x + 1
hijacker(x)
return x * 2

def hijacker(x):
if x == 21:
print "[Oh no, it's going to be 42!]"
raise HijackReturn(41)

# ---

marigold:junk arno$ python -i hijack.py
>>> foo(10)
22
>>> foo(20)
[Oh no, it's going to be 42!]
41
>>>

HTH

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Arnaud

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Beautiful Soup Looping Extraction Question

[Tess]

Hello All,

I have a Beautiful Soup question and I'd appreciate any guidance the
forum can provide.

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:  and .

The lines should be ordered in the same order as they appear in the
file - therefore the output file would look like output.txt below.

I experimented with something similar to this code:
for i in soup.findAll('p', align="left"):
print i
for i in soup.findAll('p', align="center"):
print i

I get something like this:
P4
P3
P1
div4b
div3b
div2b
div2a

Any guidance would be greatly appreciated.

Best,

Ira











##begin: file.html



P1

P2

div2a
div2b

P3
div3a
div3b
div3c

P4
div4a
div4b





##end: file.html


===begin: output.txt===
P1
div2a
div2b
P3
div3b
P4
div4b
===end: output.txt===

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Re: urllib leaves connections/sockets waiting. BIG problem!!!

[Jonathan Gardner]

On Mar 24, 6:57 am, binaryj <[EMAIL PROTECTED]> wrote:
> hi i am using urllib2 to do some automated web thing.
> basically i hit on sites and check the price what they are offering
> for their product and then decide if i want to lower or increase my
> pricing.so in short i have to hit hundreds of sites!
>
> for the problem:
> =
> i run 20 threads all do the same stuff. (hit and run :) )
> after around 10-15 hits(per thread) hits the thread does nothing. it
> freezes. slowely but STEADILY all the threads end up with the same
> fate :(
>
> i did some netstat and found out that the connecton(sockets) the
> program had opened are waiting the CLOSE_WAIT state !!
>
> netstat -t
> tcp        1      0 192.168.1.2:4882        host-blabla:www
> CLOSE_WAIT
> tcp        1      0 192.168.1.2:4884        host-blabla:www
> CLOSE_WAIT
> tcp        1      0 192.168.1.2:4375        host-blabla:www
> CLOSE_WAIT
>
> OUTPUT OF PROGRAM:
> THREAD: #Thread-2 getting price from webi-d  7511975 DONE !!!
> THREAD: #Thread-1 getting price from webi-d  4449152 DONE !!!
> THREAD: #Thread-2 getting price from webi-d  7466091 DONE !!!
> THREAD: #Thread-1 getting price from webi-d  8641914 DONE !!!
> THREAD: #Thread-2 getting price from webi-d  7745289 DONE !!!
> THREAD: #Thread-1 getting price from webi-d  6032442 DONE !!!
> THREAD: #Thread-2 getting price from webi-d  8149873 DONE !!!
> no-price-on-page error
> THREAD: #Thread-1 getting price from webi-d  5842934 DONE !!!
> no-price-on-page error
> THREAD: #Thread-2 getting price from webi-d  3385778 DONE !!!
> THREAD: #Thread-1 getting price from webi-d  4610122 DONE !!!
> THREAD: #Thread-2 getting price from webi-d  8641536 DONE !!!
> THREAD: #Thread-1 getting price from webi-d  4219935 DONE !!!
> -and thats it, it freezes. i have waited 1hr the sockets have
> not changed their states! :(
>
> please help :)

I think we'll need more details before being able to assess what is
wrong. Can you supply some sample code that has the same bug?
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Re: Serving another web site which requires authentication

[hasnihon . support]

Hi binaryj,

Yeah I feel lucky, thanks...
Well, actually, I want my users to be able to see the auction
information about some vehicles.
It's a Japanese site (https://www.iauc.co.jp/)

I've no experience about the proxy staff, but when I googled I found;
- Twisted
- pyCurl

but, I don't know how to all the proxy thing... especially, serving
the password protected
area of the site..

hoping to feel lucky again :)


On 24 Mart, 23:01, binaryj <[EMAIL PROTECTED]> wrote:
> ur in luck i am an expert at this!
> tell me the details , site name etc
>
> you would have to proxy everything, basically the urls in the copied
> page have to be changed to point to ur site.
>
> its highly possible. a minor adjustment to ur urlconf and it will work.

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PyGTK localisation on Win32

[jwesonga]

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?
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Re: Beautiful Soup Looping Extraction Question

[Paul McGuire]

On Mar 24, 6:32 pm, Tess <[EMAIL PROTECTED]> wrote:
> Hello All,
>
> I have a Beautiful Soup question and I'd appreciate any guidance the
> forum can provide.
>

I *know* you're using Beautiful Soup, and I *know* that BS is the de
facto HTML parser/processor library.  Buut, I just couldn't help
myself in trying a pyparsing scanning approach to your problem.  See
the program below for a pyparsing treatment of your question.

-- Paul


"""
My goal is to extract all elements where the following is true:  and .
"""
from pyparsing import makeHTMLTags, withAttribute, keepOriginalText,
SkipTo

p,pEnd = makeHTMLTags("P")
p.setParseAction( withAttribute(align="left") )
div,divEnd = makeHTMLTags("DIV")
div.setParseAction( withAttribute(align="center") )

# basic scanner for matching either  or  with desired attrib
value
patt = ( p + SkipTo(pEnd) + pEnd ) | ( div + SkipTo(divEnd) + divEnd )
patt.setParseAction( keepOriginalText )

print "\nBasic scanning"
for match in patt.searchString(html):
print match[0]

# simplified data access, by adding some results names
patt = ( p + SkipTo(pEnd)("body") + pEnd )("P") | \
( div + SkipTo(divEnd)("body") + divEnd )("DIV")
patt.setParseAction( keepOriginalText )

print "\nSimplified field access using results names"
for match in patt.searchString(html):
if match.P:
print "P -", match.body
if match.DIV:
print "DIV -", match.body

Prints:

Basic scanning
P1
div2a
div2b
P3
div3b
P4
div4b

Simplified field access using results names
P - P1
DIV - div2a
DIV - div2b
P - P3
DIV - div3b
P - P4
DIV - div4b
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Re: Why I hate lambdas (Re: Do any of you recommend Python as afirst programming language?)

[Terry Reedy]

"Arnaud Delobelle" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
>From what I remember when I looked at the source: stack frames execute
code objects, not functions.  They don't know what function has
spawned them, only what code object they are executing.  In fact when
one thinks of it, it makes more sense for code objects to have a name
(taken from the def statement) than for function objects, as there is
exactly one code object for every def statement.

This is what I tried to say before.  Function objects have the attributes 
needed to call the code.  Code objects have attributes needed to execute 
the code.  Both have a name for str() and repr().

tjr



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Re: New to group

[pythonnubie]

On Mar 24, 12:18 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
> On Mar 24, 3:13 pm, pythonnubie <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
> > > > i  have  come across my first exeption using randrange . The exeption
> > > > is " no such  attribute " in  module random
>
> > > > platform  is xp  home  and the python  build is activestate 2.5
>
> > > Welcome aboard!
>
> > > There's definitely a randrange function in the random module, so
> > > something else must be wrong. To get the most out of this list and
> > > minimize wasted bandwidth, the most effective way usually consists of
> > > copying and pasting:
> > > 1. The offending code (or just the relevant part if it's too big).
> > > 2. The full traceback of the raised exception.
>
> > > Regards,
> > > George
>
> > Hwere is the complete traceback ! >>> The word is:  index
>
> > Traceback (most recent call last):
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\framework
> > \scriptutils.py", line 307, in RunScript
> >     debugger.run(codeObject, __main__.__dict__, start_stepping=0)
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> > \__init__.py", line 60, in run
> >     _GetCurrentDebugger().run(cmd, globals,locals, start_stepping)
> >   File "F:\Python25\Lib\site-packages\pythonwin\pywin\debugger
> > \debugger.py", line 631, in run
> >     exec cmd in globals, locals
> >   File "F:\Documents and Settings\Mark\My Documents\rand.py", line 5,
> > in 
> >     import random
> >   File "F:\Documents and Settings\Mark\My Documents\random.py", line
> > 13, in 
> >     distributions on the real line:
> > AttributeError: 'module' object has no attribute 'randrange'
>
> > Why  would it say  it can't find the function ?
>
> Because you named your file 'random.py' and it shadows the standard
> random module! Change the name to something else, say foo.py, and try
> it again.
>
> George- Hide quoted text -
>
> - Show quoted text -

Hi that was the problem  I shoaswoed the  random  module .

Thanks to  everyone for  their support  !

Mark

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Re: Python 2.2.1 and select()

[Noah]

On Mar 24, 2:58 pm, Derek Martin <[EMAIL PROTECTED]> wrote:
> 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.
>

I think this is more of a limitation with the underlying clib.
Subprocess buffering defaults to block buffering instead of
line buffering. You can't change this unless you can recompile
the application you are trying to run in a subprocess or
unless you run your subprocess in a pseudotty (pty).

Pexpect takes care of this problem. See http://www.noah.org/wiki/Pexpect
for more info.

--
Noah
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Re: Beautiful Soup Looping Extraction Question

[Tess]

Paul - thanks for the input, it's interesting to see how pyparser
handles it.

Anyhow, a simple regex took care of the issue in BS:


for i in soup.findAll(re.compile('^p|^div'),align=re.compile('^center|
^left')):
print i


Thanks again!

T
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Breaking the barrier of a broken paradigm... part 1

[john s.]

Hi Everyone,

I hope not to offend you with too many question.. I've been lurking a
long time. I'm not keen on keeping e-mails or data stored in the
public space so this is my first post to the group.

That being said, I'm keen on refining my skills, I hope that I can
prove that I've move on beyond the: check the tut, read the faq..

Now as it's out of the way I hope that my questions can be sited as
examples for others breaking the procedural barrier.

I've seen examples using reduce, map and lamba that cause me to emit a
internal "WTFIZDISHI?"

_

With out any further adiou... IsMyKodeHotOrNot and how can I
improve it... hopefully it will help me with part two...

I'm sure anyone with 2 mins and solid skill of python can ballpark
this one...


_
#/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:
strUsr = string.split(i,":")
theUsr = strUsr[0]
usrHome = "/expirt/home/",theUsr,"/"
usrHome = ''.join(usrHome)

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':

print "User Home dir doesn't exist creating."

try:
os.makedirs('usrHome' )
except Exception, e:
print e

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)

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...")
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