Re: [Tutor] Problems starting python

[arsyed]

On Fri, Sep 5, 2008 at 6:28 AM, Linus Lindström [EMAIL PROTECTED] wrote:
 Hello. When i first installed python from the cd i bought it seemed to work
 perfectly... But then when i cancel the program and try to start it again I
 get the message: IDLE's subprocess didn't make connection. Either IDLE
 can't start a subprocess or a personal firewall software is blocking the
 connection., and the problem still stands... I've tried to completely shut
 down my firewall but without success... Please help me!


A little googling reveals a possible fix below; I'm not sure I get it
though.  If this fails, you can try running idle with the -n flag,
which avoids running a subprocess.

--- from http://www.cs.sfu.ca/CC/CSILPC/kip.html#s2-20

IDLE (Python GUI) won't start! What should I do?

Sometimes when IDLE starts, it prompts the following error message:

  Subprocess Startup Error: IDLE's subprocess didn't make
connection. Either IDLE can't start a subprocess or personal firewall
software is blocking the connection.

Here is the workaround (a fix is under research):

* launch Windows Explorer
* find (or create) a file with .py extension
* right click this file, select Edit with IDLE


Now, the IDLE (Python GUI) should start.
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Re: [Tutor] How to use urllib2.https_open with SSL support in Windows XP for python 2.5.2]

[arsyed]

On Mon, Aug 18, 2008 at 9:36 PM, xbmuncher [EMAIL PROTECTED] wrote:
 I tried it just like both of you suggested and sent a req object straight to
 urlopen. Here is my code:
 import urllib2
 url = 'https://url.com'
 headers = {
 'User-Agent' : 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)',
 'Accept' :
 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
 'Accept-Language' : 'fr-fr,en-us;q=0.7,en;q=0.3',
 'Accept-Charset' : 'ISO-8859-1,utf-8;q=0.7,*;q=0.7'
 }

 #None = GET; set values to use POST
 req = urllib2.Request(url, None, headers)
 handle = urllib2.urlopen(req)
 resp = handle.read()
 print resp.geturl()
 print resp.info()
 print resp

 resp.close()



 Here is the error msg:
 Traceback (most recent call last):
   File C:\Documents and Settings\user\Desktop\https_query.py, line 16, in
 module
 handle = urllib2.urlopen(req)
   File C:\Python25\lib\urllib2.py, line 124, in urlopen
 return _opener.open(url, data)
   File C:\Python25\lib\urllib2.py, line 381, in open
 response = self._open(req, data)
   File C:\Python25\lib\urllib2.py, line 399, in _open
 '_open', req)
   File C:\Python25\lib\urllib2.py, line 360, in _call_chain
 result = func(*args)
   File C:\Python25\lib\urllib2.py, line 1115, in https_open
 return self.do_open(httplib.HTTPSConnection, req)
   File C:\Python25\lib\urllib2.py, line 1080, in do_open
 r = h.getresponse()
   File C:\Python25\lib\httplib.py, line 928, in getresponse
 response.begin()
   File C:\Python25\lib\httplib.py, line 385, in begin
 version, status, reason = self._read_status()
   File C:\Python25\lib\httplib.py, line 349, in _read_status
 raise BadStatusLine(line)
 BadStatusLine


What URL are you trying this against?  The URL in your code
https://url.com; doesn't seem to respond at all so I can't reproduce
your error.  Have you tried against a well known HTTPS endpoint like
https://mail.google.com;?  What happens?

I'll try to guess anyway .. the Status Line in an HTTP response is the
first line that gives the response code, something like HTTP/1.1 200
OK.  Maybe your server is returning malformed headers?

See below for more:

http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html
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Re: [Tutor] How to use urllib2.https_open with SSL support in Windows XP for python 2.5.2

[arsyed]

On Mon, Aug 18, 2008 at 9:26 PM, xbmuncher [EMAIL PROTECTED] wrote:


 On Mon, Aug 18, 2008 at 8:44 PM, Kent Johnson [EMAIL PROTECTED] wrote:

 On Mon, Aug 18, 2008 at 12:40 PM, xbmuncher [EMAIL PROTECTED] wrote:
  I wanted to use the urllib2.https_open()  but it said the module did not
  exist.

 I'm not aware of a urllib2.https_open() function. I think you just
 give an https url to urllib2.urlopen(). Can you show us your actual
 code and error message?

 Kent

 http://docs.python.org/lib/https-handler-objects.html
 I accessed it like this:
 urllib2.https_open(req)

 Its probably the syntax formation of using this https functionality that I
 have wrong. Maybe you can show me how.


That method is part of the HTTPSHandler class as the docs page you
cited implies.  I believe this is what urllib2.urlopen instantiates
once it parses your URL and notices the https scheme.  You don't
need to instantiate that handler and invoke that method directly.
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Re: [Tutor] How to use urllib2.https_open with SSL support in Windows XP for python 2.5.2]

[arsyed]

On Mon, Aug 18, 2008 at 4:25 PM, bob gailer [EMAIL PROTECTED] wrote:
 Forwarding to the list. Please always reply to the list.

 --
 Bob Gailer
 Chapel Hill NC 919-636-4239

 When we take the time to be aware of our feelings and needs we have more
 satisfying interatctions with others.

 Nonviolent Communication provides tools for this awareness.

 As a coach and trainer I can assist you in learning this process.

 What is YOUR biggest relationship challenge?


 I wanted to use the urllib2.https_open()  but it said the module did not
 exist. The manual says I need SSL support installed. I've done some
 searching.. but I haven't been able to find an official implementation of
 SSL support for python 2.5 for windows. If its required for urllib2 I assume
 its part of the official python library of modules, is there an MSI
 installer or official place to get the SSL support that was mentioned in the
 urllib2 doc page? I just want to use the https capability of urllib2.


 -thanks



Calling urlopen with an https scheme should be sufficient as long as
python with SSL support is installed.  I have the ActiveState Python
2.5.2 distribution on Windows XP and it seems to work fine:

In [3]: response = urllib2.urlopen('https://google.com')

In [4]: response = urllib2.urlopen('https://mail.google.com')

In [5]: html = response.read()
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Re: [Tutor] regular expressions

[arsyed]

On Tue, Aug 5, 2008 at 7:01 AM, Jim Morcombe [EMAIL PROTECTED] wrote:
 Could someone please give me some help using the re module.

 This works:
 
 import re

 text = Jim is a good guy

 s2 = re.sub('Jim', 'Fred', text)
 print s2

 and I get Fred is a good guy
 -
 If I have:
 text = Bill Smith is nice
 how do I get rid of Smith and just have
 Bill is nice

 I tried
 s2 = re.sub('Smith', '', text)
 but it complained.


What was the error message? It should work fine:

In [25]: text = 'Bill Smith is nice'

In [26]: re.sub('Smith', '', text)
Out[26]: 'Bill  is nice'


 If I have:
 text = Jim likes a girl (Susan)
 and I want to get rid of (Susan), how do I do this.


You need to escape the parentheses because those are grouping
metacharacters in regular expressions:

In [27]: text = 'Jim likes a girl (Susan)'

In [28]: re.sub('\(Susan\)', '', text)
Out[28]: 'Jim likes a girl '


The regex howot document below explains a lot of this stuff:

http://www.amk.ca/python/howto/regex/



 First, the ( seems to muck things up.
 Second, how do I just use re to delete characters.  I tried using sub,
 but it doesn't seem to like

 Jim Morcombe




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Re: [Tutor] newbie graphing question

[arsyed]

On Sun, Jul 27, 2008 at 8:40 AM, Peter Petto [EMAIL PROTECTED] wrote:
 I'm about to try some Python programming for drawing simple geometric
 pictures (for math classes I teach) and was hoping to get some advice that
 will send me off in the best direction.

 I want to write programs that can draw figures with commands akin to
 point(x,y) to draw a point at coordinates (x,y), or segment (x1,y1,x2, y2)
 to draw a segment between points (x1, y1) and (x2, y2)?

 I'd appreciate recommendations as to the best facility or library to use to
 this end. I primarily use a Mac, but my students primarily use Windows.

 I'd love to hear any and all pointers or comments. Thanks!



Take a look at PiScript:

http://www.math.ubc.ca/~cass/piscript/docs/piscript.html
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Re: [Tutor] question about socket status

[arsyed]

On Mon, Jul 21, 2008 at 1:25 PM, Rupp, Romaine [EMAIL PROTECTED] wrote:
 Hello,

 I am new to programming with python and sockets.

 I would like to determine the status of a socket as it  is returned when you
 do 'netstat –a | grep port#'.  I would like  to know if the socket state
 is ESTABLISHED, LISTEN , CLOSE_WAIT, etc.

 Is there a way to get this information through a socket call?

 I've tried using socket.getperrname() function, but that only tells if there
 is a connection.

 Is there a way to get more information on the state of the socket
 connection?



If you're on linux, you could try poking around /proc/net. See, for example:

http://www.linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html

But I think invoking netstat and parsing the output from python might
work well enough.
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Re: [Tutor] Import modeuls

[arsyed]

On Mon, Jul 21, 2008 at 3:46 AM, Oleg Oltar [EMAIL PROTECTED] wrote:

 If I am adding, __init__.py it still doesn't import anything.
 Do I have add the import (from sampletest import EmailWithoutA) in my init
 file?



I didn't notice this before, but I don't think python does tilde expansion
in sys.path. Try using an absolute path, for example:

sys.path.insert(0, ~/folder)

to

sys.path.insert(0, /home/user/folder')
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Re: [Tutor] Import modeuls

[arsyed]

On Mon, Jul 21, 2008 at 5:15 AM, Oleg Oltar [EMAIL PROTECTED] wrote:

 They want me to do one test runner which runs any test... And ideally it
 should work on any platform

 When I added something to $PYTHONPATH, they told me to remove it...


You can set environment variables within python, e.g.:

os.environ['PYTHONPATH'] = '/some/path:' + old_path

What I don't know is if child processes invoked through os.popen inherit
that variable on all platforms. However, the subprocess.Popen object takes
an explicit env variable for that purpose:

http://docs.python.org/lib/node528.html
http://docs.python.org/lib/module-subprocess.html

So you should be able to use that for the same effect.
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Re: [Tutor] Tkinter Help

[arsyed]

On Mon, Jul 21, 2008 at 1:59 PM, Ruivaldo Neto [EMAIL PROTECTED] wrote:

 Hi,

 I have a Python app that runs as a Windows Service. Inside this
 application, there is a Thread that starts a webservice.
 When this webservice is called, this thread displays a simple Tkinter
 window with some entry´s for input.

 But the mainloop simple stays running without presenting any popup or
 error.
 The app is running as SYSTEM on Windows. As other user, the code works
 great.

 Any advice to make this work ?

 Thanks in advance.



I think this is because you need to have the service marked as
Interactive.  This page has some information:

http://msdn.microsoft.com/en-us/library/ms683502(VS.85).aspx

It might be worth asking the question in the py-win32 group or some windows
related forum.
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Re: [Tutor] (no subject)

[arsyed]

The python wiki has some options that might be worth checking out under
Playing and Creating Sounds:

http://wiki.python.org/moin/PythonInMusic



On Sun, Jul 20, 2008 at 2:16 AM, amit sethi [EMAIL PROTECTED]
wrote:


 Hi list ,
 Can someone give me an idea about the audio libraries in python . I tried
 using pymedia . What are the options available .
 --
 A-M-I-T S|S

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Re: [Tutor] Import modeuls

[arsyed]

On Sun, Jul 20, 2008 at 12:46 PM, Oleg Oltar [EMAIL PROTECTED] wrote:

 Hi
 I need to import several modules from many folders which has subfolders

 ~/folder/tests/sampletest.py
 ~/folder/suites/samplesuit.py

 a suit uses tests from tests folder. I need to import them somehow from
 tests folder. I added ~/folder to PYTHONPATH in my test_runner:


 import sys
 import os

 sys.path.insert(0, ~/folder)
 os.popen(python2.5 %s %sys.argv[1])

 But when trying to import module in the samplesuite file:

 from tests.sampletest.EmailWithoutA import EmailWithoutA


 But I getting ImportError: No module named 

 Please help



Do you have an __init__.py file in the tests and suites directories?

More on that here:

http://docs.python.org/tut/node8.html

The __init__.py files are required to make Python treat the directories as
containing packages; this is done to prevent directories with a common name,
such as string, from unintentionally hiding valid modules that occur later
on the module search path. In the simplest case, __init__.py can just be an
empty file, but it can also execute initialization code for the package or
set the __all__ variable, described later.
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Re: [Tutor] confusing HTTP error while using urlopen

[arsyed]

It looks like the site wants an Accept header. The following works:

import urllib2
url = 'http://www.anuntul.ro/'
headers = {'Accept': 'text/html'}
req = urllib2.Request(url=url, headers=headers)
rsp = urllib2.urlopen(req)
page = rsp.read()
print page





On Fri, Jul 18, 2008 at 5:38 PM, Chad Crabtree [EMAIL PROTECTED] wrote:

 Well I can confirm this behavior.  I tried changing the user-agent
 thinking there might be some filtering based on that but no go. Still
 HTTP 400 error.  WGET works just fine though

 On Fri, Jul 18, 2008 at 4:31 PM, asdg asdg [EMAIL PROTECTED] wrote:
  I'll skip the introduction and go right to the question cause it's as
 simple
  as it's confusing for me.
 
  Why does urllib2.urlopen(http://www.anuntul.ro;) return HTTPError: HTTP
  Error 400: Bad Request, while the site opens with no problems in any
 regular
  browser.
 
  Thank you in advance for answering :)
 
 
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Re: [Tutor] module paths

[arsyed]

I copy/pasted your script and it ran fine on my end. Is it possible that
you've got more than one installation of python and the feedparser module is
installed somewhere other than for the python interpreter at
/usr/local/bin/python (since that's what your script references)? Perhaps
trying python parse.py will help since your code when you invoke the
python shell.



On 7/5/08, Gonzalo Garcia-Perate [EMAIL PROTECTED] wrote:

 I'm looking at python after a long time. I wanted to build a quick
 parser for some rss feeds and have started using feedparser.

 When I test my code on the python interactive shell things work fine
 but when I try to write it into a file I get the following error:
 AttributeError: 'module' object has no attribute 'parse'

 this is what I run on the shell:
 import feedparser
  d = feedparser.parse(http://tedblog.typepad.com/tedblog/atom.xml;)
  d
 {'feed': {'updated': u'2008-07-04T14:11:15Z', 'updated_parsed': (2008,
 7, 4, 14, 11, 15, 4, 186, 0), 'links': [{'href':
 u'http://blog.ted.com/', 'type': u'text/html', 'rel': u'alternate'},
 {'href': u'http://feeds.feedburner.com/TEDBlog', 'type':
 u'application/atom+xml', 'rel': u'self'}], 'title': u'TED | TEDBlog',
 etc.

 This is what my script (which fails looks like...):
 #!/usr/local/bin/python
 import feedparser

 d = feedparser.parse(http://tedblog.typepad.com/tedblog/atom.xml;)
 d['feed']['title']

 I'm trying to ring this form within textmate or form the terminal at
 different locations as (./parse.py)

 thanks
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Re: [Tutor] Exploring the Standard Library

[arsyed]

This might work:

 import os
 print os.__file__
c:\devtools\Python25\lib\os.pyc

Also, you might find Doug Hellman's Python Module Of The Week helpful:

http://www.doughellmann.com/projects/PyMOTW/




On 7/5/08, Nathan Farrar [EMAIL PROTECTED] wrote:

  I'd like to spend some time exploring the standard library.  I'm running
 python on Ubuntu.  How would I find the location of the modules (find /
 -name os.py does not yield results)?

 Thanks!
 Nathan

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