date:20070303

HI guys,

How do you write Perl's

print a ... z, A ... Z,  \n' in Python


In Python?


A way I came up with is the following, but I'm sure this is ugly.

''.join(chr(c) for c in (range(ord('a'), ord('z')+1) +
range(ord('A'), ord('Z')+1)))
or
crange = lambda c1, c2: [ chr(c) for c in range(ord(c1), ord(c2)+1) ]
''.join(chr(c) for c in crange('a', 'z') + crange('A', 'Z'))


I want to feel The Zen of Python :)
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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread Marc 'BlackJack' Rintsch

In [EMAIL PROTECTED], Bjoern Schliessmann wrote:

 Bruno Desthuilliers wrote:
 Shawn Milo a écrit :
 
 if recs.has_key(piid) is False:
 
 'is' is the identity operator - practically, in CPython, it
 compares memory addresses. You *dont* want to use it here.
 
 It's recommended to use is None; why not is False? Are there
 multiple False instances or is False generated somehow?

Before `True` and `False` existed many people defined them as aliases to 1
and 0.  And of course there are *many* other objects that can be used in a
boolean context of an ``if`` statement for testing trueness and
falseness.

Ciao,
Marc 'BlackJack' Rintsch
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Re: Sort with extra variables

2007-03-03 Thread Marc 'BlackJack' Rintsch

In [EMAIL PROTECTED], Thomas Dybdahl Ahle wrote:

 Den Fri, 02 Mar 2007 21:13:02 +0100 skrev Bjoern Schliessmann:
 
 Thomas Dybdahl Ahle wrote:
 
 However I'd really like not to use the lambda, as it slows down the
 code.
 
 Did you check how much the slowdown is?
 
 Yes, the lambda adds 50%

Compared to what?  Compared to a sort that doesn't do what you want?

Ciao,
Marc 'BlackJack' Rintsch

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Re: print a ... z, A ... Z, \n' in Python

2007-03-03 Thread Troy Melhase

 How do you write Perl's

 print a ... z, A ... Z,  \n' in Python


 In Python?

you might consider this cheating, but it's packed with zen goodness:

 import string
 print string.letters
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
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Re: cyclic iterators ?

2007-03-03 Thread tool69

Paul Rubin a écrit :
 
 As Bruno says, you can use itertools.cycle, but the problem above is
 that you're not looping repeatedly through the list; you yield all the
 elements, then yield the first element again, then stop.  So for
 ['a','b','c']  you'd yield the sequence a,b,c,a.  

Yes, that was the problem.
Thanks for the explanation and for the cycle() function from itertool 
that I missed.

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Re: html sql client

2007-03-03 Thread gert

On Mar 2, 8:33 am, gert [EMAIL PROTECTED] wrote:
 On Mar 2, 7:33 am, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote:

  In [EMAIL PROTECTED], gert wrote:
   I was thinking about making a column module that names the columns, i
   was hoping there would be some sort of api feature that already exist
   because parsing sql statemants to figure out which column is refers to
   what is allot of work.

  Are you searching for the `description` attribute of cursors?  Section
  `Cursor Objects`:

 http://www.python.org/dev/peps/pep-0249/

 i think so :) if cursor.description would give me for example the word
 databases when i do a query like show databases or gives me all the
 column names when i do select * from mytable

http://sourceforge.net/projects/dfo/

Alrigdy i have columns with names now thx :)

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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread John Machin

On Mar 3, 7:08 pm, [EMAIL PROTECTED] wrote:
 On Mar 2, 2:44 pm, Shawn Milo [EMAIL PROTECTED] wrote:

 (snipped)

  I'm attaching both the Perl and Python versions, and I'm open to
  comments on either. The script reads a file from standard input and
  finds the best record for each unique ID (piid). The best is defined
  as follows: The newest expiration date (field 5) for the record with
  the state (field 1) which matches the desired state (field 6). If
  there is no record matching the desired state, then just take the
  newest expiration date.

  Thanks for taking the time to look at these.

 My attempts:


 ### Python (re-working John's code) ###

 import sys

 def keep_best(best, current):

 ACTUAL_STATE = 1
 # John had these swapped
 DESIRED_STATE = 5
 EXPIRY_DATE = 6

*Bullshit* -- You are confusing me with Bruno; try (re)?reading what
the OP wrote (and which you quoted above):

The newest expiration date (field 5) for the record with
the state (field 1) which matches the desired state (field 6).


and his code (indented a little less boisterously):


#If the current record is the correct state
if current.split(\t)[1] == current.split(\t)[6]:
#If the existing record is the correct state
if best.split(\t)[1] == best.split(\t)[6]:
#If the new record has a newer exp. date
if current.split(\t)[5]  best.split(\t)[5]:


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Re: print a ... z, A ... Z, \n' in Python

2007-03-03 Thread bearophileHUGS

js:
 crange = lambda c1, c2: [ chr(c) for c in range(ord(c1), ord(c2)+1) ]
 ''.join(chr(c) for c in crange('a', 'z') + crange('A', 'Z'))

Yes, managing char ranges is a bit of pain with Python.
You can also pack those chars:

xcrange = lambda cc: (chr(c) for c in xrange(ord(cc[0]), ord(cc[1])
+1))

But I don't like that much.

The calls:
''.join(xcrange('az')) + ''.join(xcrange('AZ'))

But note that you return the last item of the range too, and that goes
against the semantic of the usual Python range/xrange, so you may want
to call this function with another name.

Maybe there are better ways to solve this problem. Maybe a way to
generate (closed?) char ranges can be added to the Python standard
lib.

Bye,
bearophile

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How to query a unicode data from sqlite database

2007-03-03 Thread Tzury

Can anyone tell the technique of composing a WHERE clause that refer
to a unicode data. e.g.  WHERE FirstName = ABCD where ABCD is  the
unicoded first name in the form that sqlite will match with its
records.

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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread William Heymann

On Saturday 03 March 2007, Ben Finney wrote:
 Bjoern Schliessmann [EMAIL PROTECTED] writes:

 if not recs.has_key(piid):  # [1]

Why not

if piid not in recs:

That is shorter, simpler, easier to read and very slightly faster. Plus you 
can change the data structure of recs later without changing that line so 
long as it implements containment testing.

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Re: print a ... z, A ... Z, \n' in Python

 But note that you return the last item of the range too, and that goes
 against the semantic of the usual Python range/xrange, so you may want
 to call this function with another name.

That makes sense. 100% agree with you.

 Maybe there are better ways to solve this problem. Maybe a way to
 generate (closed?) char ranges can be added to the Python standard
 lib.

Maybe we don't want char range If string constants would be rich enough.
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Re: print a ... z, A ... Z, \n' in Python

I forgot to cc pythonlist...
#

Thanks for you quick reply.

I didn't know any string constants.

From Python Library reference, 4.1.1 String constants:

letters
   The concatenation of the strings lowercase and uppercase described below.
  The specific value is locale-dependent, and will be updated when
locale.setlocale() is called.

Great...
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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread Ben Finney

William Heymann [EMAIL PROTECTED] writes:

 On Saturday 03 March 2007, Ben Finney wrote:
  Bjoern Schliessmann [EMAIL PROTECTED] writes:
 
  if not recs.has_key(piid):  # [1]
 
 Why not

 if piid not in recs:

 That is shorter, simpler, easier to read and very slightly faster.

Perhaps if I'd made my posting shorter, simpler, easier to read and
slightly faster, you might have read the footnote to which the '[1]'
referred.

-- 
 \Choose mnemonic identifiers. If you can't remember what |
  `\ mnemonic means, you've got a problem.  -- Larry Wall |
_o__)  |
Ben Finney

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Re: Sort with extra variables

2007-03-03 Thread Diez B. Roggisch

 Well, you'd have to define the function inside the sortMoves function, as 
 it is where the variables exists.
 
 def sortMoves(board, table, ply, moves):
 def sortKey(move):
 return getMoveValue(board, table, ply, move)
 moves.sort(key=sortKey, reverse=True) return moves
 
 Wouldn't that make it create the callable at each call?

Yes, it does. But it's only created _once_ per sortMoves-call, and 
afterwards doesn't affect performance.

And no, it's not slower than you lambda version - they _should_ be 
equally fast, if not it's neglible. And also doesn't affect 
sorting-performance.

Diez
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Re: print a ... z, A ... Z, \n' in Python


js  wrote:
 A way I came up with is the following, but I'm sure this is ugly.

You could abuse __getitem__ (terribly, heh!) and use slice syntax...

class crange():
def __init__(self):
self.valid = range(47,58) + range(65,91) + range(97,123)
def __getitem__(self, s):
if isinstance(s, slice):
start, stop = s.start, s.stop
if not start: start = '0'
if isinstance(stop, int) and stop  122: stop = 'z'
elif not stop: stop  = 'z'
clist = []
chars = range(ord(start), ord(stop)+1)
for i in range(len(chars)):
if chars[i] in self.valid:
clist.append(chr(chars[i]))
return ''.join(clist)
else:
return s

cr = crange()
print cr['A':'z']
print cr['0':'8']
print cr[:]

Regards,
Jordan

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Re: Sort with extra variables

2007-03-03 Thread Thomas Dybdahl Ahle

Den Sat, 03 Mar 2007 11:26:08 +0100 skrev Diez B. Roggisch:

 Well, you'd have to define the function inside the sortMoves function,
 as it is where the variables exists.
 
 def sortMoves(board, table, ply, moves):
 def sortKey(move):
 return getMoveValue(board, table, ply, move)
 moves.sort(key=sortKey, reverse=True) return moves
 
 Wouldn't that make it create the callable at each call?
 
 Yes, it does. But it's only created _once_ per sortMoves-call, and
 afterwards doesn't affect performance.

Sure, but I'm having a LOT of sortMove calls ;)

 And no, it's not slower than you lambda version - they _should_ be
 equally fast, if not it's neglible.

Sure, but the lambda version was too slow also.

 And also doesn't affect sorting-performance.

I know, but the sorting itself is really not the problem, as the lists 
only contain 5-30 items.
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Re: print a ... z, A ... Z, \n' in Python

2007-03-03 Thread Lloyd Zusman

js  [EMAIL PROTECTED] writes:

 But note that you return the last item of the range too, and that
 goes against the semantic of the usual Python range/xrange, so you
 may want to call this function with another name.

 That makes sense. 100% agree with you.

 Maybe there are better ways to solve this problem. Maybe a way to
 generate (closed?) char ranges can be added to the Python standard
 lib.

 Maybe we don't want char range If string constants would be rich
 enough.

But as soon as we want a string that doesn't correspond to any
pre-defined constants, we're hosed.  For example, there isn't
a constant that would correspond to this Perl-ism:

  print l ... w, e ... j, L ... W, E ... J, \n;


-- 
 Lloyd Zusman
 [EMAIL PROTECTED]
 God bless you.

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Re: Converting a c array to python list

2007-03-03 Thread zefciu

Russell E. Owen wrote:

 
 It might help to have a clearer idea of why you want to do this. 
 

I am writing a Mandelbrot fractal generator with Tkinter interface.  Now
the generation works like this - there is a loop in python which
iterates through fractal's pixels and for each of them calls a functions
which checks if it belongs to Mandelbrot set or how many iterations does
it take for this point to bail out.  Then the python function sets the
pixel's colour according to the result.

I was testing it first with python function, written rather for
readibility not speed, using the builtin complex class.  It took about
90 s to generate a 1152x864 fractal.  Then I used a c function and it
took 14 s.  When I told it to my friend (grad student of informatics) he
said And probably 90% of the time takes calling the function.

So I think, that maybe I should put the whole loop into c code.  But as
before the function returned only one integer at every call, now it
would have to return a rather large array of integers (maybe chars would
be enough).

zefciu
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Re: print a ... z, A ... Z, \n' in Python

  Maybe we don't want char range If string constants would be rich
  enough.

 But as soon as we want a string that doesn't correspond to any
 pre-defined constants, we're hosed.  For example, there isn't
 a constant that would correspond to this Perl-ism:

   print l ... w, e ... j, L ... W, E ... J, \n;

Yes, I'm certain that l ... w, e ..j will never be a constant
because that doesn't mean a thing so nobody want them :)
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Re: Python 2.5, problems reading large ( 4Gbyes) files on win2k

2007-03-03 Thread Bill Tydeman


Just curious, but since the file size limitation on NTFS is 4 GB, have you
confirmed that it isn't some other part of the interaction that is causing
the problem?   What FS is hosting the files?

On 2 Mar 2007 10:09:15 -0800, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:


Folks,

I've a Python 2.5 app running on 32 bit Win 2k SP4 (NTFS volume).
Reading a file of 13 GBytes, one line at a time.  It appears that,
once the read line passes the 4 GByte boundary, I am getting
occasional random line concatenations.  Input file is confirmed good
via UltraEdit.  Groovy version of the same app runs fine.

Any ideas?

Cheers

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   US computer engineer  industrialist (1926 - )
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Re: A more navigable Python Library Reference page

2007-03-03 Thread [EMAIL PROTECTED]



 Google doesn't seem to let you add attachments so I've put a sample of
 the output here:http://www.qtrac.eu/libindex.html
 at the bottom of the page there is a link to the ~100 line libindex.py
 script that generated it.

I like it.  thanks.

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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread Paddy

On Mar 2, 10:44 pm, Shawn Milo [EMAIL PROTECTED] wrote:
 I'm new to Python and fairly experienced in Perl, although that
 experience is limited to the things I use daily.

 I wrote the same script in both Perl and Python, and the output is
 identical. The run speed is similar (very fast) and the line count is
 similar.

 Now that they're both working, I was looking at the code and wondering
 what Perl-specific and Python-specific improvements to the code would
 look like, as judged by others more knowledgeable in the individual
 languages.

Hi Shawn, there is a web page that gives examples from Perl's
Datastructures Cookbook re-implemented in Python. It might be of help
for future Python projects:
  http://wiki.python.org/moin/PerlPhrasebook

- Paddy.


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Re: print a ... z, A ... Z, \n' in Python

js  [EMAIL PROTECTED] wrote:

 HI guys,
 
 How do you write Perl's
 
 print a ... z, A ... Z,  \n' in Python
 
 In Python?

This specific one is easy, though this doesn't generalize:

import string
print string.lowercase + string.uppercase

For the general case, there's no way to avoid calling chr and ord,
because a string in Python doesn't have a natural successor. So the
only issue is how you prefer to hide those calls c (in some class or
function) and you already received suggestions on that.


Alex
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Re: print a ... z, A ... Z, \n' in Python

js  [EMAIL PROTECTED] wrote:

 I forgot to cc pythonlist...
 #
 
 Thanks for you quick reply.
 
 I didn't know any string constants.
 
 From Python Library reference, 4.1.1 String constants:
 
 letters
The concatenation of the strings lowercase and uppercase described below.
   The specific value is locale-dependent, and will be updated when
 locale.setlocale() is called.
 
 Great...

If you want to ensure ASCII is used independently of the locale, that's
what string.ascii_letters (and string.ascii_lowercase c) is for.


Alex
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Randomizing in Python

2007-03-03 Thread [EMAIL PROTECTED]

 I want to randomize a certain calculation in Python but haven't
figured it out yet. To explain what i mean, I' m going to use an
example:
I want to get the numbers to do a random
experience database for a game. What would be necessary to do so?

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qcombobox.findtext and matchflags.matchendswith

2007-03-03 Thread borntonetwork

Hi.

Using the PyQt4 library, I am trying to use the following
function(cbo is a qtcombobox):

cbo.findText(searchStr, QtCore.MatchEndsWith)

If I don't use the QtCore.MatchEndsWith, the function works
properly, but doesn't return partial matches ending with searchStr.
If I use QtCore.MatchEndsWith, I get the following error:

AttributeError: 'module' object has no attribute 'MatchEndsWith'

I've tried substituting the actual number that the enumerator
represents, which gives me a typeerror message complaining that the
argument has an invalid type.

Any suggestions?

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Re: Randomizing in Python

2007-03-03 Thread Mark Nenadov

On Sat, 03 Mar 2007 08:46:09 -0800, [EMAIL PROTECTED] wrote:

  I want to randomize a certain calculation in Python but haven't
 figured it out yet. To explain what i mean, I' m going to use an
 example:
 I want to get the numbers to do a random
 experience database for a game. What would be necessary to do so?


Look into the random module (http://docs.python.org/lib/module-random.html)

random.choice selects a random item out of a sequence
random.shuffle shuffles a sequence randomly
random.random gives a random floating point number

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Re: qcombobox.findtext and matchflags.matchendswith

2007-03-03 Thread Phil Thompson

On Saturday 03 March 2007 4:52 pm, borntonetwork wrote:
 Hi.

 Using the PyQt4 library, I am trying to use the following
 function(cbo is a qtcombobox):

 cbo.findText(searchStr, QtCore.MatchEndsWith)

 If I don't use the QtCore.MatchEndsWith, the function works
 properly, but doesn't return partial matches ending with searchStr.
 If I use QtCore.MatchEndsWith, I get the following error:

 AttributeError: 'module' object has no attribute 'MatchEndsWith'

 I've tried substituting the actual number that the enumerator
 represents, which gives me a typeerror message complaining that the
 argument has an invalid type.

 Any suggestions?

QtCore.Qt.MatchEndsWith

Phil
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Re: Perl and Python, a practical side-by-side example.

2007-03-03 Thread Jussi Salmela

Shawn Milo kirjoitti:
 snip 
 I am not looking for the smallest number of lines, or anything else
 that would make the code more difficult to read in six months. Just
 any instances where I'm doing something inefficiently or in a bad
 way.
 
 I'm attaching both the Perl and Python versions, and I'm open to
 comments on either. The script reads a file from standard input and
 finds the best record for each unique ID (piid). The best is defined
 as follows: The newest expiration date (field 5) for the record with
 the state (field 1) which matches the desired state (field 6). If
 there is no record matching the desired state, then just take the
 newest expiration date.
 

I don't know if this attempt satisfies your criteria but here goes!

This is not a rewrite of your program but was created using your problem
description above. I've not included the reading of the data because it 
has not much to do with the problem per se.

#
input = [
 aaa\tAAA\t...\t...\t...\t20071212\tBBB\n,
 aaa\tAAA\t...\t...\t...\t20070120\tAAA\n,
 aaa\tAAA\t...\t...\t...\t20070101\tAAA\n,
 aaa\tAAA\t...\t...\t...\t20071010\tBBB\n,
 aaa\tAAA\t...\t...\t...\t2007\tBBB\n,
 ccc\tAAA\t...\t...\t...\t20071201\tBBB\n,
 ccc\tAAA\t...\t...\t...\t20070101\tAAA\n,
 ccc\tAAA\t...\t...\t...\t20071212\tBBB\n,
 ccc\tAAA\t...\t...\t...\t20071212\tAAA\n,
 bbb\tAAA\t...\t...\t...\t20070101\tAAA\n,
 bbb\tAAA\t...\t...\t...\t20070101\tAAA\n,
 bbb\tAAA\t...\t...\t...\t20071212\tAAA\n,
 bbb\tAAA\t...\t...\t...\t20070612\tAAA\n,
 bbb\tAAA\t...\t...\t...\t20071212\tBBB\n,
 ]

input = [x[:-1].split('\t') for x in input]
recs = {}
for row in input:
 recs.setdefault(row[0], []).append(row)

for key in recs:
 rows = recs[key]
 rows.sort(key=lambda x:x[5], reverse=True)
 for current in rows:
 if current[1] == current[6]:
 break
 else:
 current = rows[0]
 print '\t'.join(current)
#


The output is:

aaa AAA ... ... ... 20070120AAA
bbb AAA ... ... ... 20071212AAA
ccc AAA ... ... ... 20071212AAA

and it is the same as the output of your original code on this data.
Further testing would naturally be beneficial.

Cheers,
Jussi
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Re: class attrdict

2007-03-03 Thread Andrew Coffman

Could you do something like this?

class attrdict(dict):
 def __getattr__(self, attr):
 if self.has_key(attr):
 return self[attr]
 else:
 message = 'attrdict' object has no attribute '%s' % attr
 raise AttributeError, message

If you have a dict item with the same name as a method in the class, you 
won't be able to get to it using syntax sugar, though.

It doesn't seem that the syntax sugar saves you much typing anyway 
(a.foo vs. a['foo']), but perhaps it seems nicer in some aesthetic sense.

- Andrew Coffman


Alex Martelli wrote:
 MonkeeSage [EMAIL PROTECTED] wrote:
 
 
On Mar 2, 9:25 pm, [EMAIL PROTECTED] (Alex Martelli) wrote:

The problem is mostly that, given an instance a of attrdict, whether you
can call (e.g.) a.update(foo) depends on whether you ever set
a['update'], making the whole program extremely fragile -- a very high
price to pay for some modest amount of syntax sugar.

How about something like...

class attrdict(dict):
def __init__(self, *args, **kwargs):
dict.__init__(self, *args, **kwargs)
for k, v in self.items():
dict.__setattr__(self, str(k), v)
def __setitem__(self, k, v):
dict.__setitem__(self, k, v)
dict.__setattr__(self, str(k), v)
__setattr__ = __setitem__
 
 
 Same problem: after x=attrdict(), x.update(foo) will work for a while,
 then suddenly stop working after some innocuous loop such as:
 for bah in yech: x[bah] = 23
 when one of the items in yech just happens to be the word 'update'
 (similar issues with words such as 'get', 'pop', 'clear', etc, etc).
 
 Miscegenation between attributes and items *inevitably* sucks.
 
 
 Alex
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py2exe: LoadLibrary(pythondll) failed

2007-03-03 Thread zxo102

Hi there,
   I py2exe my test.py  as test.exe with a lot of dll and pyc in that
directory. If I move the test.exe into another directory and run it
from there, it gives me an error  LoadLibrary(pythondll) failed...
python24.dll.  How can I set it up correctly for this test.exe to
run?   Thanks.

Ouyang

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How to set docstrings for extensions supporting PyNumberMethods?

2007-03-03 Thread Nick Alexander

Hello,

I am writing a python extension (compiled C code) that defines an
extension type with PyNumberMethods.  Everything works swimmingly,
except I can't deduce a clean way to set the docstring for tp_*
methods.  That is, I always have

type.__long__.__doc__ == 'x.__long__() == long(x)'

which a quick glance at the Python 2.5 source shows is the default.

I have found that I can use PyObject_GetAttr and PyWrapperDescrObject
and set the descriptor objects d_base-doc to a char pointer... but I
can't tell if this is safe.  Or the right way to do it.

If I'm on the wrong list, please let me know!
Thanks,
Nick Alexander

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Re: class attrdict

Andrew Coffman [EMAIL PROTECTED] wrote:

 Could you do something like this?
 
 class attrdict(dict):
  def __getattr__(self, attr):
  if self.has_key(attr):
  return self[attr]
  else:
  message = 'attrdict' object has no attribute '%s' % attr
  raise AttributeError, message
 
 If you have a dict item with the same name as a method in the class, you
 won't be able to get to it using syntax sugar, though.

Yes.  In __setattr__, you can choose what to do in that case (it doesn't
seem to make sense to be able to *assign* to foo.get without being able
to *access* as foo.get whatever you've assigned).

 It doesn't seem that the syntax sugar saves you much typing anyway 
 (a.foo vs. a['foo']), but perhaps it seems nicer in some aesthetic sense.

It would be nice, yes, weren't it for the inevitable irregularity, one
way or another, caused by the clash between attributes and items.

If, instead of subclassing dict, one wrapped it (and properly coded just
a few specialmethods, no ordinary ones), the overall effect could be
more regular (probably still with some limitation, since the dict does
need to be kept somewhere, and keys clashing with the special methods'
names would still have to be forbidden or otherwise specialcased).


Alex
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Re: print a ... z, A ... Z, \n' in Python

2007-03-03 Thread rzed

[EMAIL PROTECTED] (Alex Martelli) wrote in
news:[EMAIL PROTECTED]: 

 js  [EMAIL PROTECTED] wrote:
 
 HI guys,
 
 How do you write Perl's
 
 print a ... z, A ... Z,  \n' in Python
 
 In Python?
 
 This specific one is easy, though this doesn't generalize:
 
 import string
 print string.lowercase + string.uppercase
 
 For the general case, there's no way to avoid calling chr and
 ord, because a string in Python doesn't have a natural
 successor. So the only issue is how you prefer to hide those
 calls c (in some class or function) and you already received
 suggestions on that. 
 

No ord or chr in sight:

# Inclusive character range. 
def pycrange(lo,hi):
import string
chars = string.letters +  
rstr = ''
lp = chars.find(lo)
hp = chars.find(hi)
if lp  hp:
rstr = chars[lp:hp+1]
return rstr

print pycrange('c','n')


Lame code, though.

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Re: pyHook or SetWindowsHookEx

2007-03-03 Thread sturlamolden

On Mar 2, 7:01 pm, abcd [EMAIL PROTECTED] wrote:
 :(

The answer depends on which GUI library you use.

E.g. if you use MFC there is an object called win32ui.PyCWnd that has
methods for hooking key strokes.

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Re: classes and functions

2007-03-03 Thread Arnaud Delobelle

On Mar 2, 11:01 pm, Nicholas Parsons [EMAIL PROTECTED]
wrote:
 Hi Claire,

 That is the beauty of using Python.  You have a choice of using  
 classes and traditional OOP techniques or sticking to top level  
 functions.  For short, small scripts it would probably be overkill to  
 use classes.  Yet the programmer still has classes in his tool chest  
 if he/she is writing code that is going to be reused in larger  
 projects.

Exactly the same thing can be said about Lisp, C++, Perl, PHP, and no
doubt many other languages that I don't know ;)
(Well I guess C++ programs are not called 'scripts')

--
Arnaud

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pop method question

2007-03-03 Thread Nicholas Parsons

Howdy Folks,

I was just playing around in IDLE at the interactive prompt and typed  
in dir({}) for the fun of it.  I was quite surprised to see a pop  
method defined there.  I mean is that a misnomer or what?  From the  
literature, pop is supposed to be an operation defined for a stack  
data structure.  A stack is defined to be an ordered list data  
structure.  Dictionaries in Python have no order but are sequences.   
Now, does anyone know why the python core has this pop method  
implemented for a dictionary type?

I realize that in this context it is used for removing a specific key  
from the current dictionary object.  But why call it pop and not  
something more intuitive like remove or delete?

Thanks for the clarification in advance :).

--Nick




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Re: pop method question

2007-03-03 Thread Stefan Scholl

Nicholas Parsons [EMAIL PROTECTED] wrote:
 I realize that in this context it is used for removing a specific key  
 from the current dictionary object.  But why call it pop and not  
 something more intuitive like remove or delete?

I wasn't a python programmer back than, but I'd guess it's
because pop not just removes the key, it returns the value as
well.


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Re: pop method question

Nicholas Parsons [EMAIL PROTECTED] writes:
 I was just playing around in IDLE at the interactive prompt and typed
 in dir({}) for the fun of it.  I was quite surprised to see a pop
 method defined there.  I mean is that a misnomer or what?  From the
 literature, pop is supposed to be an operation defined for a stack
 data structure.  A stack is defined to be an ordered list data
 structure.  Dictionaries in Python have no order but are sequences.
 Now, does anyone know why the python core has this pop method
 implemented for a dictionary type?

Try typing: 

  help({}.pop)
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Re: pop method question

2007-03-03 Thread Nicholas Parsons


On Mar 3, 2007, at 3:49 PM, Paul Rubin wrote:

 Nicholas Parsons [EMAIL PROTECTED] writes:
 I was just playing around in IDLE at the interactive prompt and typed
 in dir({}) for the fun of it.  I was quite surprised to see a pop
 method defined there.  I mean is that a misnomer or what?  From the
 literature, pop is supposed to be an operation defined for a stack
 data structure.  A stack is defined to be an ordered list data
 structure.  Dictionaries in Python have no order but are sequences.
 Now, does anyone know why the python core has this pop method
 implemented for a dictionary type?

 Try typing:

   help({}.pop)
 --  
 http://mail.python.org/mailman/listinfo/python-list

Thanks, that gives a more details explanation of what the behavior is  
but doesn't answer my question above :(

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Re: qcombobox.findtext and matchflags.matchendswith

2007-03-03 Thread borntonetwork

On Mar 3, 12:17 pm, Phil Thompson [EMAIL PROTECTED]
wrote:
 On Saturday 03 March 2007 4:52 pm,borntonetworkwrote:



  Hi.

  Using the PyQt4 library, I am trying to use the following
  function(cbo is a qtcombobox):

  cbo.findText(searchStr, QtCore.MatchEndsWith)

  If I don't use the QtCore.MatchEndsWith, the function works
Thank you!

  properly, but doesn't return partial matches ending with searchStr.
  If I use QtCore.MatchEndsWith, I get the following error:

  AttributeError: 'module' object has no attribute 'MatchEndsWith'

  I've tried substituting the actual number that the enumerator
  represents, which gives me a typeerror message complaining that the
  argument has an invalid type.

  Any suggestions?

 QtCore.Qt.MatchEndsWith

 Phil


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portable Python ifconfig

2007-03-03 Thread Bart Van Loon

Hi all,

I'm looking for a portable (FreeBSD and Linux) way of getting typical
ifconfig information into Python.

Some research on the web brought me to Linux only solutions

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/439094
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/439093

which I didn't manage to port to FreeBSD (I'm not that experienced).
Finally though, I found out about pyifconfig:

http://mail.python.org/pipermail/python-list/1999-August/009274.html

which compiles fine on Linux after changing python1.5/Python.h to
python2.4/Python.h. On FreeBSD there is no SIOCGIFHWADDR, so I
just commented out that part. 

I can now do

In [1]: from pyifconfig import pyifconfig

In [2]: pyifconfig('ath0')
Out[2]:
{'addr': '192.168.50.104',
 'brdaddr': '192.168.50.255',
 'hwaddr': '00:17:f2:4c:a5:0c',
 'netmask': '255.255.255.0'}

on Linux, and

In [1]: from pyifconfig import pyifconfig

In [2]: pyifconfig('vr1')
Out[2]:
{'addr': '192.168.50.1',
 'brdaddr': '192.168.50.255',
 'hwaddr': '\xff\xff',
 'netmask': '255.255.255.0'}

on FreeBSD.

The problem now is that I get seemingly random information when I pass a
non-existing interface, a down interface or an empty string to
pyifconfig, which is very hard to figure out from inside a script:

In [3]: pyifconfig('foobar')
Out[3]:
{'addr': '104.154.165.183',
 'brdaddr': '104.154.165.183',
 'hwaddr': '00:00:68:9a:a5:b7',
 'netmask': '104.154.165.183'}

so, any pointers here on how I can go on from this point?

any help is appreciated

-- 
regards,
BBBart

   Wormwood : Calvin, how about you?  
   Calvin : Hard to say ma'am. I think my cerebellum just fused.
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Re: Questions about app design - OOP with python classes

On Fri, 02 Mar 2007 09:30:20 +0100, Diez B. Roggisch wrote:

 A type system doesn't help. So what if they're both floats? The test
 is still bogus, your code will still wait too long to engage the
 retro-rockets, and the billion dollar space craft will still be travelling
 at hundreds of miles an hour when it reaches the surface of Mars.
 
 A type system _could_ help. 

It's easy to wave your hands and say that Microsoft could have done
something different, but they had to work with what they had, not some
hypothetical alternative language with a hypothetical type system that
didn't exist then (if it even exists now).


 Multi-Level-Specification allows you to 
 express physical quantities with their respective unit, and operations 
 on them to yield the combined unit at compile-time. There are some 
 rather complicated cases where simple unification won't solve the 
 type-equations, but then you might annotate things explicitly.

Which is what Apps Hungarian _is_.


-- 
Steven.

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Re: py2exe: LoadLibrary(pythondll) failed

2007-03-03 Thread Sick Monkey


(1)  You may want to read the following links:
http://docs.python.org/dist/describing-extensions.html#SECTION00234

which came from:
http://docs.python.org/dist/dist.html

Here is another good resource for py2exe:
http://www.py2exe.org/index.cgi/GeneralTipsAndTricks

(2) Also, you maybe interested in PyInstaller which can wrap up everything
in one functioning exe.
http://pyinstaller.python-hosting.com/

Single file: build a single executable file, totally self-contained, which
runs without any external dependency.

On 3 Mar 2007 10:37:19 -0800, zxo102 [EMAIL PROTECTED] wrote:


Hi there,
   I py2exe my test.py  as test.exe with a lot of dll and pyc in that
directory. If I move the test.exe into another directory and run it
from there, it gives me an error  LoadLibrary(pythondll) failed...
python24.dll.  How can I set it up correctly for this test.exe to
run?   Thanks.

Ouyang


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are there any Piecewise Cubic Hermite Interpolating Polynomial in python

2007-03-03 Thread jitasi

Hi all

I want to use the matlab function pchip in python.
I have checked the scipy, but there is only spline Interpolating.
Are there any pchip Interpolating in python?

Thanks
Steven

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Re: class attrdict

On Mar 3, 1:29 pm, [EMAIL PROTECTED] (Alex Martelli) wrote:
 It would be nice, yes, weren't it for the inevitable irregularity, one
 way or another, caused by the clash between attributes and items.

In thinking about it, I think this might fall under 'we're all
consenting adults here'. I mean, you can shadow the dict constructor
from the toplevel if you're so inclined (or don't know any better).
But you could make it harder to accidentally shadow builtin
attributes:

from warnings import warn
class attrdict(dict):
__builtins__ = dir(dict)
def __init__(self, *args, **kwargs):
dict.__init__(self, *args, **kwargs)
for k, v in self.items():
dict.__setattr__(self, str(k), v)
def __setitem__(self, k, v):
if k in self.__builtins__:
warn('shadowing builtin attribute: %s' % k,
RuntimeWarning, 2)
dict.__setitem__(self, k, v)
dict.__setattr__(self, str(k), v)
__setattr__ = __setitem__

a = attrdict([(1,2)], a=3, b=4)
a.update = 'test'

Regards,
Jordan

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Python FTP server down

2007-03-03 Thread John Nagle

ftp://ftp.python.org/pub/; is returning Connection Refused today.

Does that ever work?  I need FTP access to download onto a colocated
server.


John Nagle
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Re: Questions about app design - OOP with python classes

Steven D'Aprano [EMAIL PROTECTED] writes:
  Multi-Level-Specification allows you to 
  express physical quantities with their respective unit, and operations 
  on them to yield the combined unit at compile-time. There are some 
  rather complicated cases where simple unification won't solve the 
  type-equations, but then you might annotate things explicitly.
 Which is what Apps Hungarian _is_.

I think the idea is that the compiler can still check that your
annotations are correct, or at least consistent, even if it can't
solve the equations itself.  Hungarian notation is a variable naming
convention which can be followed manually but which the compiler makes
no attempt to enforce.

Diez, can you suggest any online references about MLS?
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Re: py2exe: LoadLibrary(pythondll) failed

2007-03-03 Thread Thomas Heller

zxo102 schrieb:
 Hi there,
I py2exe my test.py  as test.exe with a lot of dll and pyc in that
 directory. If I move the test.exe into another directory and run it
 from there, it gives me an error  LoadLibrary(pythondll) failed...
 python24.dll.  How can I set it up correctly for this test.exe to
 run?   Thanks.
 
 Ouyang
 
 

The test.exe created by py2exe relies on everything else in the dist directory,
so you must copy these files as well.

Thomas

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Re: pop method question

On Sat, 03 Mar 2007 15:56:39 -0500, Nicholas Parsons wrote:

 
 On Mar 3, 2007, at 3:49 PM, Paul Rubin wrote:
 
 Nicholas Parsons [EMAIL PROTECTED] writes:
 I was just playing around in IDLE at the interactive prompt and typed
 in dir({}) for the fun of it.  I was quite surprised to see a pop
 method defined there.  I mean is that a misnomer or what?  From the
 literature, pop is supposed to be an operation defined for a stack
 data structure.  A stack is defined to be an ordered list data
 structure.  Dictionaries in Python have no order but are sequences.
 Now, does anyone know why the python core has this pop method
 implemented for a dictionary type?

 Try typing:

   help({}.pop)
 --  
 http://mail.python.org/mailman/listinfo/python-list
 
 Thanks, that gives a more details explanation of what the behavior is  
 but doesn't answer my question above :(

Just because pop can be defined for an ordered stack doesn't mean pop
can't be generalized to other data types too.

I personally don't see that pop has any advantage, especially since the
most useful example

while some_dict:
do_something_with(some_dict.pop()) 

doesn't work. Instead you have to write this:

for key in some_dict.keys(): 
# can't iterate over the dictionary directly!
do_something_with(some_dict.pop(key))

which is hardly any saving over:

for key in some_dict.keys(): 
# can't iterate over the dictionary directly!
do_something_with(some_dict[key])
del some_dict[key]


To my mind, having to supply a key to dict.pop makes it rather pointless.


-- 
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Re: cyclic iterators ?

2007-03-03 Thread MRAB

On Mar 3, 1:27 am, Paul Rubin http://[EMAIL PROTECTED] wrote:
 Tool69 [EMAIL PROTECTED] writes:
  I've tried something like this to have a cyclic iterator without
  sucess:

  def iterate_mylist(my_list):
  k = len((my_list)
  i=0
  while i = k :
  yield my_list[i]
  i += 1
  i = 0
  yield my_list[0]

  I missed something, but I don't know what exactly.

 As Bruno says, you can use itertools.cycle, but the problem above is
 that you're not looping repeatedly through the list; you yield all the
 elements, then yield the first element again, then stop.  So for
 ['a','b','c']  you'd yield the sequence a,b,c,a.

 I'd rewrite the above something like:

   def iterate_mylist(my_list):
  while True:
for m in my_list:
   yield m

 This just loops through the list over and over again.

Another problem is that it should be i  k, not i = k.

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Re: pop method question

2007-03-03 Thread jim-on-linux

On Saturday 03 March 2007 15:56, Nicholas Parsons 
wrote:
 On Mar 3, 2007, at 3:49 PM, Paul Rubin wrote:
  Nicholas Parsons [EMAIL PROTECTED] 
writes:
  I was just playing around in IDLE at the
  interactive prompt and typed in dir({}) for
  the fun of it.  I was quite surprised to see
  a pop method defined there.  I mean is that
  a misnomer or what?  From the literature,
  pop is supposed to be an operation defined
  for a stack data structure.  A stack is
  defined to be an ordered list data
  structure.  Dictionaries in Python have no
  order but are sequences. Now, does anyone
  know why the python core has this pop method
  implemented for a dictionary type?


aDict.pop(theKey)
  'produce the value'

pop removes the  key:value  and produces the value 
as results

jim-on-linux
http:\\www.inqvista.com




 
  Try typing:
 
help({}.pop)
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 n-list

 Thanks, that gives a more details explanation
 of what the behavior is but doesn't answer my
 question above :(
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Re: Questions about app design - OOP with python classes

On Thu, 01 Mar 2007 21:53:09 -0800, Paul Rubin wrote:

 Steven D'Aprano [EMAIL PROTECTED] writes:
  That still sounds like an unreliable manual type system, 
 It's unreliable in the sense that the coder has to follow the naming
 convention, and must have some bare minimum of sense. If your coders are
 morons, no naming convention will save you. (For that matter, nothing will
 save you.)
 
 Well, type systems in programming languages have generally proven more
 reliable and easier to deal with than having programmers track it all
 manually-- that's why we don't all write in Forth ;-).

Apps Hungarian is NOT a type system.

Systems Hungarian is. It is pointless: an inefficient, manual nuisance
that redundantly does what the type system already does. Even Microsoft
agrees with that now.

Unless there is a type system that can automatically deal with the
semantic difference between (say) screen coordinates and window
coordinates, or between height and width, or safe and unsafe strings, the
coder still has to deal with it themselves.

And even if there is such a type system, Python isn't it.

[snip]
 You're right that this is not exactly dimensional analysis, but it still
 seems to call for types and conversion functions, rather than naming
 conventions.

The problem with types is that as far as the compiler is concerned, the
objects are the same type. Of course it needs conversion functions. 

Now maybe you could argue that what Microsoft needed was a different
language instead of C. Maybe so, but they were working with what they
had. Just as we're working with Python.

The point I'm trying to get across isn't that Apps Hungarian is the best
imaginable solution to the problem of dealing with semantically different
kinds of data. But it is an easy solution that works quite well (not
perfectly) and (unlike relying on Haskell's type system) it can be
applied to Python quite easily.



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Re: pop method question

On Sat, 03 Mar 2007 18:13:18 -0500, jim-on-linux wrote:

 On Saturday 03 March 2007 15:56, Nicholas Parsons 
 wrote:
 On Mar 3, 2007, at 3:49 PM, Paul Rubin wrote:
  Nicholas Parsons [EMAIL PROTECTED] 
 writes:
  I was just playing around in IDLE at the
  interactive prompt and typed in dir({}) for
  the fun of it.  I was quite surprised to see
  a pop method defined there.  I mean is that
  a misnomer or what?  From the literature,
  pop is supposed to be an operation defined
  for a stack data structure.  A stack is
  defined to be an ordered list data
  structure.  Dictionaries in Python have no
  order but are sequences. Now, does anyone
  know why the python core has this pop method
  implemented for a dictionary type?
 
 
 aDict.pop(theKey)
   'produce the value'
 
 pop removes the  key:value  and produces the value 
 as results


Amazing. Absolutely amazing. Just goes to show that the ability to use
Linux doesn't require the sense to READ THE REST OF THE POST BEFORE
HITTING SEND. Not even the rest of the thread, just the post.

The Original Poster already knows that.


-- 
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Re: pop method question

2007-03-03 Thread James Stroud

Steven D'Aprano wrote:
 I personally don't see that pop has any advantage, especially since the
 most useful example
 
 while some_dict:
 do_something_with(some_dict.pop()) 
 
 doesn't work. Instead you have to write this:
 
 for key in some_dict.keys(): 
 # can't iterate over the dictionary directly!
 do_something_with(some_dict.pop(key))
 
 which is hardly any saving over:
 
 for key in some_dict.keys(): 
 # can't iterate over the dictionary directly!
 do_something_with(some_dict[key])
 del some_dict[key]
 
 
 To my mind, having to supply a key to dict.pop makes it rather pointless.
 
 


I've used it in something like this and found it worthwhile:

for akey in dict1:
   if some_condition(akey):
 dict2[akey] = dict2.pop(akey)

Which necessitates a key is a little cleaner than your latter example.
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Re: Questions about app design - OOP with python classes

Steven D'Aprano [EMAIL PROTECTED] writes:
 Unless there is a type system that can automatically deal with the
 semantic difference between (say) screen coordinates and window
 coordinates, or between height and width, or safe and unsafe strings, the
 coder still has to deal with it themselves.
 
 And even if there is such a type system, Python isn't it.

Python uses runtime typing, so you'd define classes for screen and
window coordinates, and have them do appropriate conversions or raise
exceptions when you do mixed operations.  The compiler wouldn't notice
this happening at compile time, but that's just like the rest of
Python.

 The point I'm trying to get across isn't that Apps Hungarian is the best
 imaginable solution to the problem of dealing with semantically different
 kinds of data. But it is an easy solution that works quite well (not
 perfectly) and (unlike relying on Haskell's type system) it can be
 applied to Python quite easily.

I think the notion above fits ok into Python's dynamic typing scheme.
Yeah, you may get runtime exceptions at unexpected times due to type
conflicts that you overlooked in testing, but again, the Pythonic
prescription for these and other errors seems to be write more tests.

Maybe we can concoct a cross between Python and Haskell, and call it
Paskell after the philosopher Blaise ;-).
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Re: pop method question

James Stroud [EMAIL PROTECTED] writes:
 for akey in dict1:
if some_condition(akey):
  dict2[akey] = dict2.pop(akey)
 
 Which necessitates a key is a little cleaner than your latter example.

Yeah, I also think removing keys from a dict while iterating over it
(like in Steven's examples) looks a bit dangerous dangerous.

Assuming you meant dict1.pop instead ot dict2.pop above, your
example might be written

dict2 = dict((k, dict1.pop(k)) for k in dict1 if some_condition(k))

avoiding some namespace pollution etc.
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Problem with returning prime number in a simple calculation program

2007-03-03 Thread QHorizon

Hello, I'm new to Python (I've learned everything up to iterators so
far) and fairly new to Programming.  This would be my first real
program:

#Coordinate Geometry (The whole program is not shown)

import math
import sys

print Welcome to the Coordinate Geometry Calculator!
print Type 'terms' for a list of commands

def main():
print
command = raw_input(Command? )
if command == terms:
terms()
main()
elif command == distance:
distance()
main()
elif command == slope:
slope()
main()
elif command == endpoint:
endpoint()
main()
elif command == midpoint:
midpoint()
main()
elif command == prime:
prime()
main()
elif command == quit:
sys.exit
else:
print Not a valid command
main()

#...Declaring functions here...

def prime():
num = input(Number )
i = num - 1
divcounter = 0
while i  1:
if num % i != 0:
divcounter += 1
i -= 1
if divcounter == num - 2:
print num, is a prime number
else:
print num, is not a prime number

#Start the program
main()

As it says in the title, I'm having trouble with the prime number
function.  It will print the sentence if the number is prime, but it
if isn't, the program goes into a state in the terminal where the
program never ends and you can just keep on typing.  Maybe the else
statement is ineffective?  Any ideas on how to fix this?

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Re: pop method question

On Sat, 03 Mar 2007 23:22:10 +, James Stroud wrote:

 To my mind, having to supply a key to dict.pop makes it rather pointless.
 
 
 
 
 I've used it in something like this and found it worthwhile:
 
 for akey in dict1:
if some_condition(akey):
  dict2[akey] = dict2.pop(akey)

Surely that's a no-op? You pop the value, than add it back again.

Or do you mean dict2[akey] = dict1.pop(akey)?

If so, are you sure that works? When I try it, I get RuntimeError:
dictionary changed size during iteration. You would need to take a copy
of the keys and iterate over that.

for key in dict1.keys():
if some_condition(key):
dict2[key] = dict1.pop(key)



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Re: Eric on XP for Newbie

2007-03-03 Thread SPE - Stani's Python Editor

On Mar 1, 11:39 am, [EMAIL PROTECTED] wrote:
 Thanks guys

 Found this on another blog and it seems to work - you need to run theSPE.pyo 
 file ...

Which blog? Can yo point me to the url?

Stani


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Re: Problem with returning prime number in a simple calculation program

2007-03-03 Thread Bjoern Schliessmann

[EMAIL PROTECTED] wrote:
 [reformatted indentation]
 def prime():
 num = input(Number )
 i = num - 1
 divcounter = 0
 while i  1:
 if num % i != 0
 divcounter += 1 
 i -= 1
 if divcounter == num - 2:
 print num, is a prime number
 else:
 print num, is not a prime number
 [...]
 As it says in the title, I'm having trouble with the prime number
 function.  It will print the sentence if the number is prime, but
 it if isn't, the program goes into a state in the terminal where
 the program never ends and you can just keep on typing.  

Sure thing. You designed the function to behave this way.

Look at the while loop -- especially think what happens if 
(num % i == 0). i will never be decremented then and the function
will not terminate.

Try inserting print statements for debugging if you don't get what I
meant here.

 Maybe the else statement is ineffective?

No one can read your thoughts. In which way effective?

Regards,


Björn

-- 
BOFH excuse #86:

Runt packets

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logging into forms on an ssl server using python

2007-03-03 Thread socialanxiety

Hi, I need some help, I'm trying to create a script that will fill in
the forms on an ssl website, and submit them. Could anyone help me
out, examples would be  nice.
Thanks in advance

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Re: pop method question

On Sat, 03 Mar 2007 15:36:14 -0800, Paul Rubin wrote:

 James Stroud [EMAIL PROTECTED] writes:
 for akey in dict1:
if some_condition(akey):
  dict2[akey] = dict2.pop(akey)
 
 Which necessitates a key is a little cleaner than your latter example.
 
 Yeah, I also think removing keys from a dict while iterating over it
 (like in Steven's examples) looks a bit dangerous dangerous.

It is dangerous. That's why I didn't do it.

I very carefully iterated over a list, not the dictionary, and in fact put
in a comment explicitly saying that you can't iterate over the dictionary:

for key in some_dict.keys(): 
# can't iterate over the dictionary directly!
do_something_with(some_dict.pop(key))


If you try to iterate over the dictionary directly, you get a RuntimeError
exception when the dictionary changes size. Unfortunately, the exception
isn't raised until AFTER the dictionary has changed size.

 D = {1:1, 2:2}
 for key in D:
... D.pop(key)
...
1
Traceback (most recent call last):
  File stdin, line 1, in module
RuntimeError: dictionary changed size during iteration
 D
{2: 2}


That's a gotcha to watch out for: the exception isn't raised until
the damage is done.



 Assuming you meant dict1.pop instead ot dict2.pop above, your
 example might be written
 
 dict2 = dict((k, dict1.pop(k)) for k in dict1 if some_condition(k))
 
 avoiding some namespace pollution etc.

You get a RuntimeError exception when dict1 changes size.

You know, if I were easily offended, I'd be offended that you accused _me_
of writing dangerous code when my code both worked and worked safely,
while your code failed and did damage when it did so (dict1 irretrievably
loses an item).

*wink*



-- 
Steven.

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Re: pop method question

2007-03-03 Thread James Stroud

Steven D'Aprano wrote:
 On Sat, 03 Mar 2007 23:22:10 +, James Stroud wrote:
 
 To my mind, having to supply a key to dict.pop makes it rather pointless.



 I've used it in something like this and found it worthwhile:

 for akey in dict1:
if some_condition(akey):
  dict2[akey] = dict2.pop(akey)
 
 Surely that's a no-op? You pop the value, than add it back again.
 
 Or do you mean dict2[akey] = dict1.pop(akey)?
 
 If so, are you sure that works? When I try it, I get RuntimeError:
 dictionary changed size during iteration. You would need to take a copy
 of the keys and iterate over that.
 
 for key in dict1.keys():
 if some_condition(key):
 dict2[key] = dict1.pop(key)
 
 
 

Yes. You are right, both in the typo and using keys().

James
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Re: thread safe SMTP module

2007-03-03 Thread Aahz

In article [EMAIL PROTECTED],
Gordon Messmer  [EMAIL PROTECTED] wrote:

I believe that I've seen this discussed previously, so maybe there's
some interest in it.  I wrote a threaded mail filtering framework
a while ago, and one of the modules does address verification
via SMTP.  Since smtplib.SMTP uses blocking IO, it can block the
whole interpreter.  Sometimes the whole thing would stop working
indefinitely.

That doesn't make any sense.  Blocking I/O generally releases the GIL,
which is the whole reason Python doesn't totally suck for threading.
There may be other thread problems, but I doubt that you have correctly
analyzed their source.  You can prove this for yourself by trying out my
threaded spider at
http://www.pythoncraft.com/OSCON2001/ThreadPoolSpider.py
-- 
Aahz ([EMAIL PROTECTED])   * http://www.pythoncraft.com/

I disrespectfully agree.  --SJM
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Re: py2exe: LoadLibrary(pythondll) failed

2007-03-03 Thread zxo102

On 3月4日, 上午6时50分, Thomas Heller [EMAIL PROTECTED] wrote:
 zxo102 schrieb:

  Hi there,
 I py2exe my test.py  as test.exe with a lot of dll and pyc in that
  directory. If I move the test.exe into another directory and run it
  from there, it gives me an error  LoadLibrary(pythondll) failed...
  python24.dll.  How can I set it up correctly for this test.exe to
  run?   Thanks.

  Ouyang

 The test.exe created by py2exe relies on everything else in the dist 
 directory,
 so you must copy these files as well.

 Thomas

Thanks. Let me try it.

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Re: Problem with returning prime number in a simple calculation program

On Sat, 03 Mar 2007 15:36:36 -0800, QHorizon wrote:

 Hello, I'm new to Python (I've learned everything up to iterators so
 far) and fairly new to Programming.  This would be my first real
 program:
 
 #Coordinate Geometry (The whole program is not shown)
 
 import math
 import sys
 
 print Welcome to the Coordinate Geometry Calculator!
 print Type 'terms' for a list of commands
 
 def main():

[snip big boring series of if...elif... statements]

You're eventually going to run into a run time recursion error if you run
that for long enough. Can you see why?

A better way to do a command loop is something like this:


def bad_command():
# called when the user enters an unrecognized command
print Unknown command, please try again

class QuitException(Exception):
# used for exiting the loop
pass


def main():
# Make a dispatch table that maps the name of a command 
# (as typed by the user) with a function to call.
dispatcher = {'slope': do_slope,
  'primes': do_primes,
  'quit': do_quit,
  # ... and more here
 }
try:
# loop forever (until we jump out of it)
while True:
cmd = get_command_from_user()
# you have to write get_command_from_user yourself
func = dispatcher.get(cmd, bad_command)
result = func()
print result
except QuitException:
print Goodbye, come again soon!


Now you just need to define your individual functions do_slope, do_primes,
etc. The only special one is do_quit.

def do_quit():
raise QuitException


Now let's look at the do_primes function. (You call it prime.)

 def prime():
   num = input(Number )

That's a good way to have malicious users do really, really really bad
things to your PC.

Safer is to do this:

num = int(raw_input(Number ))

   i = num - 1
   divcounter = 0
   while i  1:
   if num % i != 0:
   divcounter += 1
   i -= 1

That's an inefficient algorithm, if it even works. I'm not sure that it
works, and I'm too lazy to find out :)


   if divcounter == num - 2:
   print num, is a prime number
   else:
   print num, is not a prime number

This will only work if divcounter happens to equal the original number
less two. If it equals something else, nothing will be printed.

Here's a simple algorithm to check if a number is prime.

# Warning: untested.
def do_primes():
num = int(raw_input(Number )
if num = 1:
return %n is not prime % num
if num == 2:
return %n is prime % num
elif num % 2 == 0:
# even numbers other than 2 aren't prime
return %n is not prime % num
for i in range(3, num, 2):
if num % i == 0:
return %n is not prime % num
return %n is prime % num


Now, this is deliberately not an efficient algorithm. There are things you
can do to make it more efficient, or you can re-write it completely.
The thing to remember is, don't PRINT the result, RETURN it. Your
do_primes() function should only calculate the result, and pass that
result up to the main loop for printing (or writing to a text file, or
emailing, or whatever).

Have fun!



-- 
Steven.

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Re: pop method question

2007-03-03 Thread Raymond Hettinger

[Nicholas Parsons]
  Dictionaries in Python have no order but are sequences.  
 Now, does anyone know why the python core has this pop method  
 implemented for a dictionary type?

 I realize that in this context it is used for removing a specific key  
 from the current dictionary object.  But why call it pop and not  
 something more intuitive like remove or delete?

The naming for pop() method followed from the naming of the previously
existing popitem() method.  Neither remove nor delete would have
been a good name for a method that looked-up and returned a value as
well as mutating the dictionary.  The word pop on the other hand
strongly suggests both retrieval and mutation.

The notion that pop is only defined for stack operations is somewhat
pedantic.  We have also successfully used the name for sets, dicts,
and deques (success meaning that most people just get it and are
able to learn, use, read the name without difficultly).

The rationale for the pop() method was that the pattern v=d[k]; del
d[k] could be collapsed to a single call, eliminating a two
successive look-ups of the same key.  Looking back, this rationale is
questionable because 1) the second lookup is not expensive because the
first lookup put the relevant hash entries in the cache, and 2) the
lookup/delete pattern for dictionaries does not seem to arise often in
practice (it does come-up every now and then in the context of set
operations).

There was also a notion that threaded programming would benefit by
having lookup-then-delete as an atomic transaction.  It is unknown to
me whether that purported benefit has ever been realized.


Raymond Hettinger

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Re: portable Python ifconfig

On Mar 3, 3:38 pm, Bart Van Loon [EMAIL PROTECTED] wrote:
 I'm looking for a portable (FreeBSD and Linux) way of getting typical
 ifconfig information into Python.

Here's a pure python version of the C extension, based on the recipes
you posted. In this version, the 'addr' key will not exist for a non-
existent / non-active interface.

import socket, fcntl, struct, platform

def _ifinfo(sock, addr, ifname):
iface = struct.pack('256s', ifname[:15])
info  = fcntl.ioctl(sock.fileno(), addr, iface)
if addr == 0x8927:
hwaddr = []
for char in info[18:24]:
hwaddr.append(hex(ord(char))[2:])
return ':'.join(hwaddr)
else:
return socket.inet_ntoa(info[20:24])

def ifconfig(ifname):
ifreq = {'ifname': ifname}
infos = {}
osys  = platform.system()
sock  = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
if osys == 'Linux':
# offsets defined in /usr/include/linux/sockios.h on linux 2.6
infos['addr']= 0x8915 # SIOCGIFADDR
infos['brdaddr'] = 0x8919 # SIOCGIFBRDADDR
infos['hwaddr']  = 0x8927 # SIOCSIFHWADDR
infos['netmask'] = 0x891b # SIOCGIFNETMASK
elif 'BSD' in osys: # ???
infos['addr']= 0x8915
infos['brdaddr'] = 0x8919
infos['hwaddr']  = 0x8927
infos['netmask'] = 0x891b
try:
for k,v in infos.items():
ifreq[k] = _ifinfo(sock, v, ifname)
except:
pass
sock.close()
return ifreq

ifc = ifconfig('ath0')
if ifc.has_key('addr'):
print ifc

I'm pretty sure the offsets would be different for BSD, but I don't
have any BSD boxes to test on (looks like from a bit of googling that
you might need to look at /compat/linux/linux_ioctl.h for the offsets
on BSDs). I'll leave it to you to fill in the BSD stuff.

Regards,
Jordan

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Re: portable Python ifconfig

On Mar 3, 7:17 pm, MonkeeSage [EMAIL PROTECTED] wrote:
 I'm pretty sure the offsets would be different for BSD

Then again, mabye not.

http://freebsd.active-venture.com/FreeBSD-srctree/newsrc/compat/linux/linux_ioctl.h.html

Regards,
Jordan

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Re: print a ... z, A ... Z, \n' in Python

rzed [EMAIL PROTECTED] wrote:

 [EMAIL PROTECTED] (Alex Martelli) wrote in
 news:[EMAIL PROTECTED]: 
 
  js  [EMAIL PROTECTED] wrote:
  
  HI guys,
  
  How do you write Perl's
  
  print a ... z, A ... Z,  \n' in Python
  
  In Python?
  
  This specific one is easy, though this doesn't generalize:
  
  import string
  print string.lowercase + string.uppercase
  
  For the general case, there's no way to avoid calling chr and
  ord, because a string in Python doesn't have a natural
  successor. So the only issue is how you prefer to hide those
  calls c (in some class or function) and you already received
  suggestions on that. 
 
 No ord or chr in sight:
 
 # Inclusive character range. 
 def pycrange(lo,hi):
 import string
 chars = string.letters +  
 rstr = ''
 lp = chars.find(lo)
 hp = chars.find(hi)
 if lp  hp:
 rstr = chars[lp:hp+1]
 return rstr
 
 print pycrange('c','n')
 
 
 Lame code, though.

Very (the very existence of rstr and the if block are redundant, for
example; return chars[lp:hp+1] will already return an empty string
when lp  hp, and it's weird for the result to be empty for equal
arguments lo and hi when it's a length-two string for arguments, say,
'a' and 'b').

Also incorrect, presumably, since it would e.g. consider pycrange('w',
'C') to be 'wxyzABC', rather than empty (as an ord/chr based solution
would) or 'wxyz' (as I believe Perl does for 'w'...'C' -- one of those
black-magical Perl things, unless they've changed it recently) -- in
ASCII, uppercase letters come before lowercase ones, but in
string.letters they're vice versa.

Sure, you can get a complete 256-char ASCII alphabet with
alp=string.maketrans('', ''), use alp.find(x) as roughly equivalent to
ord(x) and alp[y] as roughly equivalent to chr(y), and thus (or by
sillier tricks yet) you wouldn't _formally_ be calling chr and ord
(you'd instead use roughly equivalent but slower and murkier idioms).
However, my point was: you can't avoid transforming from characters to
numbers and back again (ord and chr are just the one obvious way to do
that -- correct, if you want ASCII, readable, direct, and fast).  .find
and indexing (instead of ord and chr) do give you more flexibility (to
use an underlying order that's not ASCII's) should you need that; and
slicing an appropriate string does avoid an explicit loop.

(Just trying to forestall further silliness...): other ways to avoid
calling chr and ord include abusing modules struct and array.


Alex
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Re: class attrdict

MonkeeSage [EMAIL PROTECTED] wrote:

 On Mar 3, 1:29 pm, [EMAIL PROTECTED] (Alex Martelli) wrote:
  It would be nice, yes, weren't it for the inevitable irregularity, one
  way or another, caused by the clash between attributes and items.
 
 In thinking about it, I think this might fall under 'we're all
 consenting adults here'. I mean, you can shadow the dict constructor
 from the toplevel if you're so inclined (or don't know any better).
 But you could make it harder to accidentally shadow builtin
 attributes:
 
 from warnings import warn
 class attrdict(dict):
 __builtins__ = dir(dict)
 def __init__(self, *args, **kwargs):
 dict.__init__(self, *args, **kwargs)
 for k, v in self.items():
 dict.__setattr__(self, str(k), v)
 def __setitem__(self, k, v):
 if k in self.__builtins__:
 warn('shadowing builtin attribute: %s' % k,
 RuntimeWarning, 2)
 dict.__setitem__(self, k, v)
 dict.__setattr__(self, str(k), v)
 __setattr__ = __setitem__
 
 a = attrdict([(1,2)], a=3, b=4)
 a.update = 'test'

Besides missing the warning in the __init__, this also has pretty weird
behavior whenever subject to a .pop, .update, .setdefault, del of either
item or attr, etc, etc: the attributes and items get out of sync (and,
catching each and every mutating-method to keep the separate dicts of
items and attrs in perfect sync is somewhat of a nightmare).

If the consenting adults in question WANT totally murky, irregular,
buggy behavior hiding under every corner -- why are they using Python in
the first place?  It's so much easier to make such utter messes in other
languages, after all.

It's impossible to make something foolproof, because fools are so
ingenious; Python tends to keep them at bay by cultural forces (a strong
collective bias towards simplicity, regularity, correctness).  The
neverending quest to confuse attributes and items (inevitably leading to
complications, irregularity, and bugs) is better pursued in other
languages -- just about ANY other language except Python.


Alex
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Re: class attrdict

On Mar 3, 7:54 pm, [EMAIL PROTECTED] (Alex Martelli) wrote:
 Besides missing the warning in the __init__, this also has pretty weird
 behavior whenever subject to a .pop, .update, .setdefault, del of either
 item or attr, etc, etc: the attributes and items get out of sync (and,
 catching each and every mutating-method to keep the separate dicts of
 items and attrs in perfect sync is somewhat of a nightmare).

Good points. There are many complexities involved, and little actual
gain. Saving three or four chars isn't worth all the trouble. I hadn't
fully thought-out the situation.

Regards,
Jordan

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Re: pop method question

Steven D'Aprano [EMAIL PROTECTED] wrote:
   ...
 while some_dict:
 do_something_with(some_dict.pop()) 
 
 doesn't work. Instead you have to write this:

You have to use .popitem for this -- that's what's it's for...


Alex
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Re: pop method question

Raymond Hettinger [EMAIL PROTECTED] wrote:
   ...
 The notion that pop is only defined for stack operations is somewhat
 pedantic.

Worse: it's totally wrong.  It's also defined for eyes, as a musical
genre, as a kind of soda, as an avant-garde artistic movement of the
'50s, for baloons, as a parent of the male persuasion, for email
reading, and moreover it's often used to refer to Persistent Organic
Pollutants or Points Of Presence -- not forgetting weasels, either.


Alex
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Re: pyHook or SetWindowsHookEx

2007-03-03 Thread Jordan

On Feb 27, 9:01 am, abcd [EMAIL PROTECTED] wrote:
 I am having trouble with pyHook on python 2.4.1.  Basically I have a
 python app that uses pyHook to capture keyboard events and write them
 straight to a file.  The application is running as a service on a
 windows machine.  If I am at that windows machine the application
 works just fine, logging my keystrokes.  However, if I use Remote
 Desktop to connect to the machine and open up say Notepad it doesn't
 capture the keystrokes.  Is this a problem with pyHook?  or is it he
 way Windows handles the events?

 Is there a way to setup my own hook without pyHook using just python?
 i think the function I am interested in is SetWindowsHookEx.

 Thanks in advance.

I'm pretty sure it's not a problem with pyHook.  I'm also fairly sure
that you can't log the keystrokes of someone who is logged onto your
machine from another; that would be a major security flaw.  The only
way (I think) this would work is if you wrote your own remote desktop
program that logged keystrokes, and then sent it to the remote
computer when logging off.

Cheers,
Jordan

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Re: class attrdict

MonkeeSage [EMAIL PROTECTED] wrote:

 On Mar 3, 7:54 pm, [EMAIL PROTECTED] (Alex Martelli) wrote:
  Besides missing the warning in the __init__, this also has pretty weird
  behavior whenever subject to a .pop, .update, .setdefault, del of either
  item or attr, etc, etc: the attributes and items get out of sync (and,
  catching each and every mutating-method to keep the separate dicts of
  items and attrs in perfect sync is somewhat of a nightmare).
 
 Good points. There are many complexities involved, and little actual
 gain. Saving three or four chars isn't worth all the trouble. I hadn't
 fully thought-out the situation.

You make a good point.  I do like being able to say foo.bar=baz rather
than foo['bar']=baz in certain cases -- not so much to save 3 chars, but
to avoid excessive punctuation; however, I don't really need this AND
all of dict's power at the same time, so, I don't inherit from dict:-).


Alex
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Re: portable Python ifconfig

Bart,

Can you try this and let us know if it works for FreeBSD?

import socket, fcntl, struct

def _ifinfo(sock, addr, ifname):
iface = struct.pack('256s', ifname[:15])
info  = fcntl.ioctl(sock.fileno(), addr, iface)
if addr == 0x8927:
hwaddr = []
for char in info[18:24]:
hwaddr.append(hex(ord(char))[2:])
return ':'.join(hwaddr)
else:
return socket.inet_ntoa(info[20:24])

def ifconfig(ifname):
ifreq = {'ifname': ifname}
sock  = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
ifreq['addr']= _ifinfo(sock, 0x8915, ifname) # SIOCGIFADDR
ifreq['brdaddr'] = _ifinfo(sock, 0x8919, ifname) #
SIOCGIFBRDADDR
ifreq['netmask'] = _ifinfo(sock, 0x891b, ifname) #
SIOCGIFNETMASK
ifreq['hwaddr']  = _ifinfo(sock, 0x8927, ifname) #
SIOCSIFHWADDR
except:
pass
sock.close()
return ifreq

Regards,
Jordan

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Re: pop method question

2007-03-03 Thread Nicholas Parsons

Hi Raymond,

Thank you for your clarification below.  I was just using remove  
and delete as possible alternatives to the name pop without much  
contemplation.  Like you say below, it begs the question as to why  
not have two separate operations for dictionaries (retrieval of value  
from key followed by deletion of key) instead of one method.

I'm not sure I agree with you said about the pedantic usage of pop.   
I would rather have a term mean one thing instead of several causing  
ambiguity.  Just from my computer science background when I see pop 
(), I think of a stack data structure.  Why muddle the waters by  
introducing another meaning for the term?  There are plenty of other  
words to use that could describe the behavior exhibited by the  
dictionary operation of removing a key and returning its value.  The  
notion of a stack and pop() and push() methods for it are very  
important from a historical perspective and is not just some fad.

But then again, there are other examples of ambiguity in the python  
language such as allowing operators like '+' to be overloaded.  Why  
not just have a add() method like Java?  Of course Java does cheat  
a little by overloading the '+' operator for string objects but that  
is a built-in feature of language.  Also some people find '+' more  
appealing to the eye than a method call like add() in their code.

Even in the case of C, we have some ambiguity with the dangling if  
statement.  So I guess you can't win for trying :).

Just call me a purist and think of me as someone who likes  
consistency.  Python is here to stay and no language is perfect...

--Nick

On Mar 3, 2007, at 7:32 PM, Raymond Hettinger wrote:

 [Nicholas Parsons]
  Dictionaries in Python have no order but are sequences.
 Now, does anyone know why the python core has this pop method
 implemented for a dictionary type?

 I realize that in this context it is used for removing a specific key
 from the current dictionary object.  But why call it pop and not
 something more intuitive like remove or delete?

 The naming for pop() method followed from the naming of the previously
 existing popitem() method.  Neither remove nor delete would have
 been a good name for a method that looked-up and returned a value as
 well as mutating the dictionary.  The word pop on the other hand
 strongly suggests both retrieval and mutation.

 The notion that pop is only defined for stack operations is somewhat
 pedantic.  We have also successfully used the name for sets, dicts,
 and deques (success meaning that most people just get it and are
 able to learn, use, read the name without difficultly).

 The rationale for the pop() method was that the pattern v=d[k]; del
 d[k] could be collapsed to a single call, eliminating a two
 successive look-ups of the same key.  Looking back, this rationale is
 questionable because 1) the second lookup is not expensive because the
 first lookup put the relevant hash entries in the cache, and 2) the
 lookup/delete pattern for dictionaries does not seem to arise often in
 practice (it does come-up every now and then in the context of set
 operations).

 There was also a notion that threaded programming would benefit by
 having lookup-then-delete as an atomic transaction.  It is unknown to
 me whether that purported benefit has ever been realized.


 Raymond Hettinger

 -- 
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distutils - script install check file existence before copy?

2007-03-03 Thread [EMAIL PROTECTED]

Not sure if it is possible to do this - I know distutils has force
option that can be turned on/off for install_data, but is it possible
to do something somewhat complicated - have a data file named YYY,
need to copy it to share/script/YYY only if share/script/YYY does not
already exist, otherwise, need to copy YYY to share/script/YYY.new

Does anyone have any hints on how to go about doing this?

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Re: pop method question

Nick,

In regards to stack-like objects, pop() implies mutation of the
reciever and returning the item 'popped' off the stack. The same
_semantic_ meaning can be used for pop() regarding dictionaries, even
though the _implementation_ would be different: dict.pop(key) mutates
the reciever and returns the value associated with the key.

Regards,
Jordan

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running warnings

2007-03-03 Thread memcached

I wrote these codes pieces:
 
try:
import termios, TERMIOS
except  ImportError:
try:
import  msvcrt
except  ImportError:
try:
from EasyDialogs import  AskPassword
except  ImportError:
getpass =  default_getpass
else:
getpass = AskPassword
else:
getpass =  win_getpass
else:
getpass =  unix_getpass
 
 
When running I got the error warnings:
 
/usr/lib/python2.3/TERMIOS.py:7: DeprecationWarning: the TERMIOS module is  
deprecated; please use termios
DeprecationWarning)
Traceback (most  recent call last):
File t2.py, line 18, in ?
getpass = unix_getpass
NameError: name 'unix_getpass' is not defined
 
 
Can you tell me what're there warnings and how to avoid  them?Thanks!
BRBRBR**BR AOL now offers free 
email to everyone.  Find out more about what's free from AOL at 
http://www.aol.com.
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Re: Non Sequitur

2007-03-03 Thread Ben Finney

Dennis Lee Bieber [EMAIL PROTECTED] writes:

 
   I before E
   Except after C
   Or when sounded as A
   As in Neighbor and Weigh
 

Yes, like the A sound in weird or ceiling.

-- 
 \Most people don't realize that large pieces of coral, which |
  `\   have been painted brown and attached to the skull by common |
_o__) wood screws, can make a child look like a deer.  -- Jack Handey |
Ben Finney

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Re: portable Python ifconfig

2007-03-03 Thread Bart Van Loon

It was 3 Mar 2007 18:43:57 -0800, when MonkeeSage wrote:
 Bart,

 Can you try this and let us know if it works for FreeBSD?

thanks for you suggestions!

 import socket, fcntl, struct

 def _ifinfo(sock, addr, ifname):
 iface = struct.pack('256s', ifname[:15])
 info  = fcntl.ioctl(sock.fileno(), addr, iface)
 if addr == 0x8927:
 hwaddr = []
 for char in info[18:24]:
 hwaddr.append(hex(ord(char))[2:])
 return ':'.join(hwaddr)
 else:
 return socket.inet_ntoa(info[20:24])

 def ifconfig(ifname):
 ifreq = {'ifname': ifname}
 sock  = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 try:
 ifreq['addr']= _ifinfo(sock, 0x8915, ifname) # SIOCGIFADDR
 ifreq['brdaddr'] = _ifinfo(sock, 0x8919, ifname) #
 SIOCGIFBRDADDR
 ifreq['netmask'] = _ifinfo(sock, 0x891b, ifname) #
 SIOCGIFNETMASK
 ifreq['hwaddr']  = _ifinfo(sock, 0x8927, ifname) #
 SIOCSIFHWADDR
 except:
 pass
 sock.close()
 return ifreq

apparenlty, it doesn't. :-(

I changes the except block into

except Exception, e:
print e

and added

if __name__ == '__main__':
 print ifconfig('ng0')
 print ifconfig('vr0')
 print ifconfig('vr2')
 print ifconfig('xl0')

ng0 exists and has an IP (virtual interface created by mpd)
vr0 exists but does not have an IP (phisical interface for mpd)
vr2 exists and has an IP configured
xl0 does not exist

output:

[Errno 25] Inappropriate ioctl for device
{'ifname': 'ng0'}
[Errno 25] Inappropriate ioctl for device
{'ifname': 'vr0'}
[Errno 25] Inappropriate ioctl for device
{'ifname': 'vr2'}
[Errno 25] Inappropriate ioctl for device
{'ifname': 'xl0'}

however, in Linux I get the following results:

[Errno 99] Cannot assign requested address
{'ifname': 'eth0'}
{'hwaddr': '0:17:f2:4c:a5:c', 'ifname': 'ath0', 'netmask': '255.255.255.0', 
'addr': '192.168.50.104', 'brdaddr': '192.168.50.255'}
{'hwaddr': '0:0:0:0:0:0', 'ifname': 'tun0', 'netmask': '255.255.255.255', 
'addr': '192.168.3.6', 'brdaddr': '0.0.0.0'}
[Errno 19] No such device
{'ifname': 'wielewoele'}

which seems 100% correct.

-- 
regards,
BBBart

   Susie: You'd get a good grade without doing any work.  
   Calvin: So?  
   Susie: It's wrong to get rewards you haven't earned.  
   Calvin: I've never heard of anyone who couldn't live with that.
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Python 2.5 incompatible with Fedora Core 6 - packaging problems again

2007-03-03 Thread John Nagle

I've been installing Python and its supporting packages on
a dedicated server with Fedora Core 6 for about a day now.
This is a standard dedicated rackmount server in a colocation
facility, controlled via Plesk control panel, and turned over
to me with Fedora Core 6 in an empty state. This is the
standard way you get a server in a colo today.

Bringing Python up in this completely clean environment is
a huge hassle, and it doesn't really work.

Fedora Core 6 ships with Python 2.4, which appears to be a
good decision on someone's part. Of course, there's no
standard RPM for a Python 2.5 install on Linux. Packaging is
someone else's problem, according to the Python developers.
So it's necessary to build from source. And the python.org
FTP server is down, so even getting the source onto a remote
server is a pain. So I have to download it on another machine
and bring it over with FTP.

Trying to install Python 2.5 yields at least the following problems:

Fedora Core 6 comes with GCC 4.1.1, but the README file
with Python 2.5 says this:

GCC 4.1,
GCC 4.2: There is a known incompatibility between Python and GCC,
where GCC 4.1 and later uses an interpretation of C
different to earlier GCC releases in an area where the C
specification has undefined behaviour (namely, integer arithmetic
involving -sys.maxint-1).

As a consequence, compiling Python with GCC 4.1/4.2 is not
recommended. It is likely that this problem will be resolved
in future Python releases. As a work-around, it seems that
adding -fwrapv to the compiler options restores the earlier
GCC behaviour.

OK, given that, presumably ./configure takes care of that problem,
right? Anybody know for sure?

make runs fine after ./configure.

But make install does some compiles, something install probably
shouldn't be doing. Some of these compiles fail, with error messages
like
/var/www/vhosts/sitetruth.com/private/downloads/python/Python-2.5/Modules/_curses_panel.c:271:

error: PyCursesPanelObject has no member named pan

But the install script plunges blindly on, presumably installing a broken
Python 2.5. Apparently Fedora Core 6 doesn't come with curses preinstalled,
but the Python installer assumes it is there. What's inexcusable is
just plowing on after failed compiles, resulting in a broken install.

It's probably necessary to install something before building Python,
but the README file is silent on this.

OK. Plunging onward, and not really needing the curses library,
we try to install MySQLdb. We get that with FTP,
unpack it, go to the approprate directory, and run python setup.py.
This fails because the MySQL headers aren't installed:

_mysql.c:35:23: error: my_config.h: No such file or directory

OK, looks like we need to install mysql-devel, so we do that,
using yum. This forces an update of OpenSSL, Kerberos, and
e2fsprogs-dev. Which means we should reboot at some point.

But now we can build MySQLdb. So we build and install it.

So then we try import MySQLdb in Python 2.5. And we get this:

/usr/local/lib/python2.5/site-packages/MySQL_python-1.2.2-py2.5-linux-i686.egg/_mysql.py:3:
UserWarning: Module _mysql was already imported from
/usr/local/lib/python2.5/site-packages/MySQL_python-1.2.2-py2.5-linux-i686.egg/_mysql.pyc,
but
/var/www/vhosts/sitetruth.com/private/downloads/MySQLdb/MySQL-python-1.2.2 is
being added to sys.path
import sys, pkg_resources, imp
Traceback (most recent call last):
File stdin, line 1, in module
File MySQLdb/__init__.py, line 19, in module
import _mysql
File build/bdist.linux-i686/egg/_mysql.py, line 7, in module
File build/bdist.linux-i686/egg/_mysql.py, line 4, in __bootstrap__
File
/usr/local/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py,
line 800, in resource_filename
File
/usr/local/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py,
line 1228, in get_resource_filename
File
/usr/local/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py,
line 1250, in _extract_resource
File
/usr/local/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py,
line 880, in get_cache_path
File
/usr/local/lib/python2.5/site-packages/setuptools-0.6c5-py2.5.egg/pkg_resources.py,
line 846, in extraction_error
pkg_resources.ExtractionError: Can't extract file(s) to egg cache

The following error occurred while trying to extract file(s) to the Python egg
cache:

[Errno 13] Permission denied: '/var/www/vhosts/sitetruth.com/.python-eggs'

The Python egg cache directory is currently set to:

/var/www/vhosts/sitetruth.com/.python-eggs

Perhaps your account does not have write access to this directory? You can
change the cache directory by setting the PYTHON_EGG_CACHE environment
variable to point to an accessible directory.

So what's going on?

Re: Non Sequitur

Ben Finney [EMAIL PROTECTED] wrote:

 Dennis Lee Bieber [EMAIL PROTECTED] writes:
 
  
  I before E
  Except after C
  Or when sounded as A
  As in Neighbor and Weigh
  
 
 Yes, like the A sound in weird or ceiling.

ceiling falls under the except after C exception.

weird is, of course, weird (as most of English)...


Alex
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Re: Questions about app design - OOP with python classes

2007-03-03 Thread John Nagle

Steven D'Aprano wrote:
 On Fri, 02 Mar 2007 09:30:20 +0100, Diez B. Roggisch wrote:
 
 
A type system doesn't help. So what if they're both floats? The test
is still bogus, your code will still wait too long to engage the
retro-rockets, and the billion dollar space craft will still be travelling
at hundreds of miles an hour when it reaches the surface of Mars.

A type system _could_ help. 
 
 
 It's easy to wave your hands and say that Microsoft could have done
 something different, but they had to work with what they had, not some
 hypothetical alternative language with a hypothetical type system that
 didn't exist then (if it even exists now).

 The Pascal/Ada/Modula family of languages all had type systems
with restrictions on conversion.  Unlike C, types in Pascal
are not simply abbreviations of the type; they're unique types.

 This turns out to be too restrictive, but it's certainly been
tried.

 There are C++ class libraries that understand units.  And
the conversion factors can be dealt with at compile time, so
the overhead goes away.

John Nagle
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Re: are there any Piecewise Cubic Hermite Interpolating Polynomial inpython

2007-03-03 Thread Terry Reedy


jitasi [EMAIL PROTECTED] wrote in message 
news:[EMAIL PROTECTED]
| Hi all
|
| I want to use the matlab function pchip in python.
| I have checked the scipy, but there is only spline Interpolating.
| Are there any pchip Interpolating in python?

Putting p.. c.. h.. i.. p... Python into Google gives 165 results.  Have 
you checked any?




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[ python-Bugs-1672853 ] Error reading files larger than 4GB

Bugs item #1672853, was opened at 2007-03-03 00:01
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672853group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Windows
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Case Van Horsen (casevh)
Assigned to: Nobody/Anonymous (nobody)
Summary: Error reading files larger than 4GB

Initial Comment:
When reading test files larger than 4GB, sometimes two lines are merged into a 
single line. The problem is reproducible on Windows 2K SP4 with both Python 2.4 
and 2.5. It does not appear to occur on Linux.

I have attached a test case that creates the problem.



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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 11:16
Message generated for change (Comment added) made by krisvale
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 10:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 01:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 12:16
Message generated for change (Comment added) made by loewis
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 11:40

Message:
Logged In: YES 
user_id=21627
Originator: NO

USECL and USELINK is easily resolved: that's an option of vsextcomp, used
to build the official AMD64 and Itanium binaries with the 2003 build
environment, vsextcomp, and the platform compilers. Apparently, when the VS
2005 projects were created, the AMD64 and Itanium targets weren't updated.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 02:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 11:16
Message generated for change (Comment added) made by krisvale
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 10:57

Message:
Logged In: YES 
user_id=1262199
Originator: NO

This suggest to me that the reporter is not using the PCBuild8 build setup
to do this, since that should have all-new flags.  I will still try to
repro, though.

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 10:40

Message:
Logged In: YES 
user_id=21627
Originator: NO

USECL and USELINK is easily resolved: that's an option of vsextcomp, used
to build the official AMD64 and Itanium binaries with the 2003 build
environment, vsextcomp, and the platform compilers. Apparently, when the VS
2005 projects were created, the AMD64 and Itanium targets weren't updated.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 10:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 01:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 12:16
Message generated for change (Comment added) made by fred2k
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: fred2k (fred2k)
Date: 2007-03-03 12:53

Message:
Logged In: YES 
user_id=1733250
Originator: YES

What do you mean by PCBuild8 build setup ??
I only see the files that are necessary to the build in the directory.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:57

Message:
Logged In: YES 
user_id=1262199
Originator: NO

This suggest to me that the reporter is not using the PCBuild8 build setup
to do this, since that should have all-new flags.  I will still try to
repro, though.

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 11:40

Message:
Logged In: YES 
user_id=21627
Originator: NO

USECL and USELINK is easily resolved: that's an option of vsextcomp, used
to build the official AMD64 and Itanium binaries with the 2003 build
environment, vsextcomp, and the platform compilers. Apparently, when the VS
2005 projects were created, the AMD64 and Itanium targets weren't updated.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 02:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 12:16
Message generated for change (Comment added) made by loewis
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
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Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 13:05

Message:
Logged In: YES 
user_id=21627
Originator: NO

In what directory? PCbuild or PCbuild8?

--

Comment By: fred2k (fred2k)
Date: 2007-03-03 12:53

Message:
Logged In: YES 
user_id=1733250
Originator: YES

What do you mean by PCBuild8 build setup ??
I only see the files that are necessary to the build in the directory.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:57

Message:
Logged In: YES 
user_id=1262199
Originator: NO

This suggest to me that the reporter is not using the PCBuild8 build setup
to do this, since that should have all-new flags.  I will still try to
repro, though.

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 11:40

Message:
Logged In: YES 
user_id=21627
Originator: NO

USECL and USELINK is easily resolved: that's an option of vsextcomp, used
to build the official AMD64 and Itanium binaries with the 2003 build
environment, vsextcomp, and the platform compilers. Apparently, when the VS
2005 projects were created, the AMD64 and Itanium targets weren't updated.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 02:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

--

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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005

Bugs item #1672336, was opened at 2007-03-02 12:16
Message generated for change (Comment added) made by fred2k
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Build
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: fred2k (fred2k)
Assigned to: Kristj�n Valur (krisvale)
Summary: Building python 2.5 for AMD64 (windows) and VS2005

Initial Comment:
When building pythoncore for AMD64 (WIndows) on VS2005, I get the following 
error : 

3generate buildinfo
3cl.exe -c -D_WIN32 -DUSE_DL_EXPORT -D_WINDOWS -DWIN32 -D_WINDLL -MD -MD 
/USECL:MS_OPTERON ..\Modules\getbuildinfo.c -Fogetbuildinfo.o -I..\Include 
-I..\PC
3Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.42 for 
80x86
3Copyright (C) Microsoft Corporation.  All rights reserved.
3getbuildinfo.c
3Linking...
3LINK : warning LNK4044: unrecognized option '/USELINK:MS_SDK'; ignored
3getbuildinfo.o : fatal error LNK1112: module machine type 'X86' conflicts 
with target machine type 'x64'
3Build log was saved at file://d:\users\fbr\python 
build\Python-2.5\PCbuild8\amd64-temp-release\pythoncore\BuildLog.htm
3pythoncore - 1 error(s), 225 warning(s)

I already looked for the issue on google and on the ML archive 
(http://mail.python.org/pipermail/python-dev/2006-March/062753.html) but the 
workaround explained there (checking vsextcompiler) is specific for VC2003.

Has anyone solved this problem ?







--

Comment By: fred2k (fred2k)
Date: 2007-03-03 13:08

Message:
Logged In: YES 
user_id=1733250
Originator: YES

As I tried to build with MVS2005, I used the sln file in the PCBuild8
directory

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 13:05

Message:
Logged In: YES 
user_id=21627
Originator: NO

In what directory? PCbuild or PCbuild8?

--

Comment By: fred2k (fred2k)
Date: 2007-03-03 12:53

Message:
Logged In: YES 
user_id=1733250
Originator: YES

What do you mean by PCBuild8 build setup ??
I only see the files that are necessary to the build in the directory.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:57

Message:
Logged In: YES 
user_id=1262199
Originator: NO

This suggest to me that the reporter is not using the PCBuild8 build setup
to do this, since that should have all-new flags.  I will still try to
repro, though.

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 11:40

Message:
Logged In: YES 
user_id=21627
Originator: NO

USECL and USELINK is easily resolved: that's an option of vsextcomp, used
to build the official AMD64 and Itanium binaries with the 2003 build
environment, vsextcomp, and the platform compilers. Apparently, when the VS
2005 projects were created, the AMD64 and Itanium targets weren't updated.

--

Comment By: Kristj�n Valur (krisvale)
Date: 2007-03-03 11:23

Message:
Logged In: YES 
user_id=1262199
Originator: NO

Well, it sounds like he is trying to link modules compiled for different
machines.
/USECL or /USELINK aren't options for MSVC, so something fishy is going on
there.  I will try to reproduce when I get the chance

--

Comment By: Martin v. Löwis (loewis)
Date: 2007-03-03 02:49

Message:
Logged In: YES 
user_id=21627
Originator: NO

Kristjan, can you take a look? If not, please unassign.

--

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detailatid=105470aid=1672336group_id=5470
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[ python-Bugs-1672336 ] Building python 2.5 for AMD64 (windows) and VS2005