need some help in serving static files inside a wsgi apps

[Tool69]

Hi,

Until now, I was running my own static site with Python, but I'm in
need of dynamism.

After reading some cgi tutorials, I saw Joe Gregorio's old article
Why so many Python web frameworks? about wsgi apps [http://
bitworking.org/news/Why_so_many_Python_web_frameworks] and have a
question about it. The code he gave works like a charm (I had to make
a little change because SQLAlchemy has changed since), but how the
hell can I serve static files (css, js, images, etc.) within an wsgi
app, ie inside a '/static' directory ?!

Sorry if my question is a stupid one, but I cannot find an easy way to
do this. Each tutorial I'm reading out there does not talk about them
at all. All of my python books didn't mention wsgi either.

I know I could use web.py, web2py, Cherrypy, Django, Pylons, etc. but
I'm trying to understand basics of web dev. from their roots.

thanks in advance for any advice ,

Kib.
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Re: Python Magazine: Issue 1 Free!

[Tool69]

Thanks for it, what tools did you use to build the mag : Scribus ?

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Parsing nested constructs

[tool69]

Hi,

I need to parse some source with nested parenthesis, like this :

 cut-

{
 {item1}
 {
  {item2}
  {item3}
 }
}

 cut-


In fact I'd like to get all start indexes of items and their end (or 
lenght).

I know regexps are rather limited for this type of problems.
I don't need an external module.

What would you suggest me ?

Thanks.
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Re: Parsing nested constructs

[tool69]

David a écrit :
 On 9/8/07, tool69 [EMAIL PROTECTED] wrote:
 Hi,

 I need to parse some source with nested parenthesis, like this :

 
 If this is exactly how your data looks, then how about a loop which
 searches for {item and the following }? You can use the find
 string method for that.
 
 Otherwise, if the items don't look exactly like {item, but the
 formatting is otherwise exactly the same as above, then look for lines
 that have both { and } on them, then get the string between them.
 
 Otherwise, if { and } and the item aren't always on the same line,
 then go through the string character by character, keep track of when
 you encounter { and }. When you encounter a } and there was a
 { before (ie, not a }), then get the string between the { and
 the }
Hi David,

thanks for answering, I will choose the last one as my strings are not 
on the same line and may contain a lot of stuff inside.

cheers,

6TooL9
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encoding problems

[tool69]

Hi,

I would like to transform reST contents to HTML, but got problems
with accented chars.

Here's a rather simplified version using SVN Docutils 0.5:

%-

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from docutils.core import publish_parts

class Post(object):
 def __init__(self, title='', content=''):
 self.title = title
 self.content = content

 def _get_html_content(self):
 return publish_parts(self.content,
 writer_name=html)[html_body]
 html_content = property(_get_html_content)

# Instanciate 2 Post objects
p1 = Post()
p1.title = First post without accented chars
p1.content = This is the first.
...blabla
... end of post...

p2 = Post()
p2.title = Second post with accented chars
p2.content = Ce poste possède des accents : é à ê è

for post in [p1,p2]:
 print post.title, \n +-*30
 print post.html_content

%-

The output gives me :

First post without accented chars
--
div class=document
pThis is the first.
...blabla
... end of post.../p
/div

Second post with accented chars
--
Traceback (most recent call last):
File C:\Documents and
Settings\kib\Bureau\Projets\python\dbTest\rest_error.py, line 30, in 
module
print post.html_content
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe8' in 
position 39:
ordinal not in range(128)

Any idea of what I've missed ?

Thanks.
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Re: encoding problems

[tool69]

Lawrence D'Oliveiro a écrit :
 In message [EMAIL PROTECTED], tool69 wrote:
 
 p2.content = Ce poste possède des accents : é à ê è
 
 My guess is this is being encoded as a Latin-1 string, but when you try to
 output it it goes through the ASCII encoder, which doesn't understand the
 accents. Try this:
 
 p2.content = uCe poste possède des accents : é à ê è.encode(utf8)
 

Thanks for your answer Lawrence, but I always got the error.
Any other idea ?

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Re: encoding problems

[tool69]

Diez B. Roggisch a écrit :
 tool69 wrote:
 
 Hi,

 I would like to transform reST contents to HTML, but got problems
 with accented chars.

 Here's a rather simplified version using SVN Docutils 0.5:

 %-

 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
 
 This declaration only affects unicode-literals.
 
 from docutils.core import publish_parts

 class Post(object):
  def __init__(self, title='', content=''):
  self.title = title
  self.content = content

  def _get_html_content(self):
  return publish_parts(self.content,
  writer_name=html)[html_body]
  html_content = property(_get_html_content)
 
 Did you know that you can do this like this:
 
 @property
 def html_content(self):
 ...
 
 ?
 

I only took some part of code from someone else
(an old TurboGears tutorial if I remember).

But you're right : decorators are better.

 # Instanciate 2 Post objects
 p1 = Post()
 p1.title = First post without accented chars
 p1.content = This is the first.
 ...blabla
 ... end of post...

 p2 = Post()
 p2.title = Second post with accented chars
 p2.content = Ce poste possède des accents : é à ê è
 
 
 This needs to be a unicode-literal:
 
 p2.content = uCe poste possède des accents : é à ê è
 
 Note the u in front.
  


 
 You need to encode a unicode-string into the encoding you want it.
 Otherwise, the default (ascii) is taken.
 
 So 
 
 print post.html_content.encodec(utf-8)
 
 should work.
 

That solved it : thank you so much.

 Diez
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Re: New UI Toolkit

[tool69]

Gerdus van Zyl a écrit :

Seems very promising.

But I'm afraid with the Swing-like interface, i.e : did you use the same 
  widget positionning ?
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Re: running a Delphi part from Python ?

[tool69]

Stef Mientki a écrit :

 AFAIK, Scintilla is a code editor.
 What I need looks more like ms-word,
 handling lists, tables, images, formulas.
 
 thanks,
 Stef Mientki


So you'll need the RichTextCtrl

http://www.wxpython.org/docs/api/wx.richtext.RichTextCtrl-class.html

See a sample in the demo under Recent Additions.
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Re: NLTK: Natural language processing in Python

[tool69]

NLTK seems very interesting, and the tutorial are very well done.
Thanks for it !

Kib²
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Re: preferred windows text editor?

[tool69]

Notepad++ with NppExec plugin and you can launch your scripts inside Np++.

some others, very Powerfull :
http://e-texteditor.com/
http://intype.info/home/index.php
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Re: cyclic iterators ?

[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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cyclic iterators ?

[Tool69]

Hi,

Let say I've got a simple list like my_list = [ 'a', ',b', 'c' ].
We can have an iterator from it by k =  iter( my_list), then we can
access each of her (his ?) element by k.next(), etc.

Now, I just wanted k to have the following cyclic behaviour (without
rising the ) :

 k.next()
'a'
 k.next()
'b'
 k.next()
'c'
 k.next() - not raising StopIteration error
'a'
 k.next()
'b'
etc.

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.
Thanks.

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Re: Newbie Test

[Tool69]

On 3 mar, 01:44, Nicholas Parsons [EMAIL PROTECTED] wrote:
 Greetings,

 This is just a test to see if I can post to this mailing list.  Can
 someone from the list please respond to this email so I know it worked?

 Thanks in advance!
 --Nick

Hi Nicholas,

Does it work for you ?

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question with inspect module

[Tool69]

Hi,

I would like to retrieve all the classes, methods and functions of a
module.
I've used the inspect module for this, but inside a given class
(subclass of some other one), I wanted to retrieve only the methods
I've written, not the inherited one. How can I do ?

Thanks.

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Re: question with inspect module

[Tool69]

Thanks Miki, that's exactly what I need :)

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Re: Vim scripting with python

[Tool69]

Thanks Stuart,
I'll take a look at it.

Another thing :
Is there any way to made some modification de the python.syntax file
to highlight the functions call, i.e :
os.popen(...) --- popen(...) will be highlighted.

Cheers.

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Vim scripting with python

[Tool69]

Hi,

I saw several old posts speaking of vim scripting in Python. This one
in particular :
http://www.velocityreviews.com/forums/t351303-re-pythonising-the-vim-eg-syntax-popups-gt-vimpst.html

But I didn't find where to put this vimrc.py on my Windows machine.
My normal _vimrc file is in C:\Documents and Settings\my_name .

Does anyone have any advice, and more genraly how to script Vim with
Python ?

I know I can put some python functions inside my vimrc file like
this :

function! My_function()
python  EOF
import vim, string
...blablabla
EOF
endfunction

but I would like to use external .py files.

Thanks.

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Re: need clarification with import statements

[Tool69]

Hi John,
 1. Your directory/package hierarchy is far too complicated. Flatten it.

Ok.

 2. You have circular references: the others module will import from
 utils, but utils wants to import from others. This is prima facie
 evidence that your modules are not structured properly

Yes, that's why I asked the question in fact, circular references are a
bit hazardous.

. Rule 1: Modules should contain /related/ classes and functions.
 Rule 2: A graph of what imports what should not have loops.

 Consider combining others and utils -- does that make sense?

Yes, I can combine them as they need eachother.

 Another alternative: split out those some functions of myutils.py (ie
 myutils_func1 and myutils_func2) into a fourth module. This module
 might be the nucleus of a tool-kit of miscellaneous functions that you
 might import in /any/ app -- in that case, move it outside the current
 package.

Good idea indeed,
Thanks for all,
6TooL9

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need clarification with import statements

[Tool69]

Hi,
I've got the following hierarchy:

mainprog/
__init__.py
prog.py
utils/
__init__.py
myutils.py
others/
__init__.py
myothers.py

Inside prog.py I need to have full access to myutils.py and
myothers.py;
Inside myutils.py, I need to access two classes from myothers.py (ie
myotherClass1 and myotherClass2);
Inside myothers.py, I need some functions of myutils.py (ie
myutils_func1 and myutils_func2);

Do you have some hints please ? I'm trying to avoid name conflicts, so
I haven't used from ... import *.
I suspect ther's something wrong, but I think I really don't understand
what's going on internally (no errors (for the moment !))

Inside prog.py : from utils.myutils import myotherClass1, myotherClass2
+ some functions of myutils I need
Inside myutils.py : from other.myothers import myotherClass1,
myotherClass2
Inside others.py : import utils.myutils

Thanks.

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Re: oo problem

[tool69]

Hi,
First, let me thanks you for all your clear comments.


 
 This is, in my mind, both a usage and a design flaw. 
 
 You are creating (and throwing away) instances of drawable
 objects to the draw method of a paper instance. But what does
 paper.draw() actually do with the drawable object? Call a draw method
 within it?

No, actually the paper instance is a subclass of a canvas from an 
external module. And this one have a stroke() method.
In reading your comments, I think it's now clear that I must get back 
and let any primitive have an inner draw() method ( a subclass of 
Drawable object in our case).

 If so, that is when you should pass the paper instance (or
 just the part needed -- clipping rectangle perhaps?).

In fact, my approach was a bad one : in initialising the paper instance, 
I was already clipping it.
If I wrote : p = Paper(-5,-5,5,5), all drawings made on that paper will 
be clipped inside a rectangle with lower-left corner (-5,-5) and 
upper-right corner (5,5).
Now, I think it's better to clip after all primitives have been added to 
the paper.

 
 The actual implementation of draw() for each primitive will have
 to handle clipping to the boundaries of the Canvas object that is passed
 to it.
 
 You'll notice that the only place the primitive needs to know
 about the canvas is in its specific draw method. And only at that time
 is the canvas (paper) passed to it.
 
 Instead of the concept; 
 
 Paper, draw a line from x to y 
 
 (and having to pass the paper to the initializer of the line
 primitive), you have to think in terms of: 
 
 Line, draw yourself on this paper 
 
 Or, if you consider the last example above… Compare that to your
 example: 
 
 -=-=-=-=- 
 paper.draw( Line( paper, x1, y1, x2, y2)  ) 
 -=-=-=-=-=- 
 
 Here, you are telling the paper to do the drawing, and passing
 it a Line instance (and passing it the paper it is supposed to be drawn
 on). Why? The paper isn't drawing the line on itself… While
 
 -=-=-=-=- 
 Line(Point(x1, y1), Point(x2, y2)).draw(paper) 
 -=-=-=-=- 
 
 initializes a Line instance, then asks it to draw itself using paper as
 the surface to be drawn upon. 

Yes I was wrong, that's all clear now.
Thanks again, this was very helpfull.

6TooL9
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Re: oo problem

[Tool69]

Dennis Lee Bieber a écrit :

 On 10 Dec 2006 03:47:21 -0800, Tool69 [EMAIL PROTECTED]
 declaimed the following in gmane.comp.python.general:

  Thanks for your answers,
  I though about the first solution too, but I've redundant code, say ie:
  p = Paper(100,200)
  p.draw( Rectangle(p,10,20,50,60) ) -- we're forced to write 'p' two
  times.
 

   I'd suggest not passing an instance initialization to your Paper
 draw() method...

 p = Paper(100, 200)
 p.add(Rectangle(10, 20, 50, 60))
 p.add(OtherPrimitives())
 p.draw()

 where p.draw() (Paper.draw(self) really) does something like:

   self.whatever_is_needed_for_Paper_itself
   for prm = self.primitives:  #list of stuff from p.add(...) calls
   prm.draw(self)  #pass current paper to the 
 primitive
   #which draws 
 itself on the paper
   #and can do 
 whatever calculations
   #(CLIPPING 
 perhaps) needed

Thanks for all your comments and suggestions.
Denis, I would like to know how I can made a draw method for a
primitive without a Paper instance inside ...that's always the same
problem as only my Paper instance knows the Paper sizes !

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Re: oo problem

[Tool69]

Dennis Lee Bieber a écrit :


   Perhaps you missed that the loop (in Paper) that invokes each
 primitive's draw() is passing itself (the Paper instance)...


Oops, sorry I missed it in fact.

But I still have a problem with my the primitives (some pathes I had to
build ):
i.e a mathematical ray is infinite, so I must draw a segment on screen
and need the paper sizes to calculate the segments starts and ends (
I've got a lot of objects like this ). I don't know how to build them
without passing a paper instance.
The actual implementation of some primitives uses :

def __init__(self, paper_instance, etc. ):
do something

But I as mentioned before, I'm not satisfied with it since I shall
write this do draw a Line :*
paper.draw( Line( paper, x1, y1, x2, y2) This is what I don't find
aesthetic : the repetition of paper calls.

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Re: Pydev configuration

[tool69]

Sébastien Boisgérault a écrit :
 Hi,
 
 Did anyone managed to change the code font family/size
 in Pydev (Python Editor Plugin for Eclipse) ? I found how
 to change the color mapping (Windows/Preference/Pydev)
 but did not found the font setting.
 
 Cheers,
 
 SB
 
Salut Sébastien,

Preferences/General/Appearence/ColorsFonts/ in the right menu choose 
Basic/Text Font

6TooL9
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Re: The Python Papers Edition One

[Tool69]

I've recently tried the docutils's reST module with Pygments ( to
highlight Python sources), so you can have LaTeX + HTML + PDF output
(You can see what it renders here :
h**p://kib2.free.fr/geoPyX/geoPyX.html ). It worked fine, but needs a
little work to suit your needs (you'll have to write your own CSS, and
maybe your LaTeX preambule ).

For OpenOffice, a friend wrote a little Python script that colourize a
Python source inside a document. I think It will be possible to write
your own for HTML output, but the ooo API docs aren't well documented
for Python.

Chears,
6Tool9

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Finding the carret position in a regular expression

[Tool69]

Hi,
supposed I've got the following text :

mytext = for myvar in somelist:

with the following simple pattern : pattern = [a-z]+

I use re.findall(pattern, mytext) wich returns :
['myvar','somelist']

Now, I want my prog to return the positions of the returned list
elements, ie :
myvar was found at position 5 in mytext
somelist was found at position 16 in mytext

How can I implement this ? Sorry if it's trivial, that's the first time
I use regular expressions.
Thanks,
6Tool9

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Re: Finding the carret position in a regular expression

[Tool69]

Thanks Fredrik,
I was not aware of finditer. Iterators are very usefull !

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Re: [Zopyrus] A python IDE for teaching that supports cyrillic i/o

[tool69]

Sorry, but did someone knows if Pida works under Windows ?
Thanks.
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ini files and plugins

[tool69]

Hi,
I've made a basic LaTeX file editor in wxPython, but now I wanted to add 
it some features :

1 -  create a sort of ini file where I can put the user configuration 
that will load itself on the application startup ;
2 -  a simple plugin system with python files ( maybe to add new 
langages, etc.) ;

I'm looking for simple articles, modules or code snippets on these 
subjects;
thanks,
6TooL9
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Re: ini files and plugins

[tool69]

Fredrik Lundh a écrit :
 tool69 wrote:
 
 1 -  create a sort of ini file where I can put the user configuration
 that will load itself on the application startup ;
 
 http://docs.python.org/lib/module-ConfigParser.html ?
 
 2 -  a simple plugin system with python files ( maybe to add new
 langages, etc.) ;
 
 http://effbot.org/zone/import-string.htm ?
 
 /F 
 
 
 
Thanks Fredrik, I'll take a look.
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Re: ANN: PyQt v4.1 Released

[Tool69]

David Boddie a écrit :


 Do you mean the example from the PyQt4 distribution?
Yes, that was it.

 That uses a port of an old syntax highlighting example from Qt 4.0. Someone 
 needs to
 port the C++ example from Qt 4.2 to PyQt4.

So, we've got no sample to use QScintilla2 ??

Thanks,
6TooL9

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Re: ANN: PyQt v4.1 Released

[Tool69]

Thanks David,
your sample works nicely !

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Re: ANN: PyQt v4.1 Released

[Tool69]

Sorry,
I just tried with other lexers, but I'm having some errors (names not
defined errors) with those ones :
1.lexer = QsciLexerRuby()
2.lexer = QsciLexerTeX()
Are they implemented ?

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Re: ANN: PyQt v4.1 Released

[Tool69]

Shame on me, I forgot to import the lexers.

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Re: ANN: PyQt v4.1 Released

[Tool69]

Hi Phil,
I followed the docs to build qscintilla2, all is going well with no
errors, but when I launched the PyQt Syntax Highlighter Example,
nothing is highlighted but the first line of text, whereas the C++
sample works well in the demo.
Any hints ?
Thanks.

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Re: ANN: PyQt v4.1 Released

[Tool69]

Thanks Phil,
Can you put some hints about how to build QScintilla2 on Windows please
?

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SetBackgroundColor doesn't work for me

[Tool69]

Hi,
I'm on Linux Ubuntu Breezy with wxPython 2.6.1 and Python 2.4.1
installed.
I've made an app, but the BackgroundColors won't work on any of my
ListBoxes, they only work with Windows XP. Does someone had this
problem before ? Any suggestion ? 
thanks.

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