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comp.lang.python

CGI with URL problem

rodmc

2/11/2008 1:21:00 PM

-- sorry if this has shown up twice, but my browser crashed and ended
up posting the message when I hit the space bar for some odd reason.
Also it was not quite ready.

Hi,

I am writing a small CGI app which tests if another webpage exists,
the pages are on a Wiki system. Anyway when I run the same function
(see below) from within IDLE it is ok, however when it is run from
within the CGI script I get a socket error::

"URLError:
reason = <socket.error instance>"

I am not quite sure what is causing this, is there a special way of
dealing with such things from within CGI script? I have pasted the
offending function below, along with only the import statement which
relates to that function.

Thanks in advance for any help.

Kind regards,

rod

From the CGI version:

from urllib2 import urlopen as urlopen

def urlexists(url):
path="http://x.y.z/wiki/index.php?title=...
sock = urlopen(path)
page=sock.read()
if "There is currently no text in this page" in page:
return True
else:
return False

Ammended IDLE version:

from urllib2 import urlopen as urlopen
import os,sys

def urlexists(url):
path="http://x.y.z/wiki/index.php?title=...
sock = urlopen(path)
page=sock.read()
if "There is currently no text in this page" in page:
print "found"
return True
else:
print "not found"
return False

if __name__=="__main__":
urlexists("cheese_test")
2 Answers

Ralf Schoenian

2/13/2008 4:29:00 AM

0


rodmc schrieb:
> -- sorry if this has shown up twice, but my browser crashed and ended
> up posting the message when I hit the space bar for some odd reason.
> Also it was not quite ready.
>
> Hi,
>
> I am writing a small CGI app which tests if another webpage exists,
> the pages are on a Wiki system. Anyway when I run the same function
> (see below) from within IDLE it is ok, however when it is run from
> within the CGI script I get a socket error::
>
> "URLError:
> reason = <socket.error instance>"
>
> I am not quite sure what is causing this, is there a special way of
> dealing with such things from within CGI script? I have pasted the
> offending function below, along with only the import statement which
> relates to that function.
>
> Thanks in advance for any help.
>
> Kind regards,
>
> rod
>
> From the CGI version:
>
> from urllib2 import urlopen as urlopen
>
> def urlexists(url):
> path="http://x.y.z/wiki/index.php?title=...
> sock = urlopen(path)
> page=sock.read()
> if "There is currently no text in this page" in page:
> return True
> else:
> return False
>
> Ammended IDLE version:
>
> from urllib2 import urlopen as urlopen
> import os,sys
>
> def urlexists(url):
> path="http://x.y.z/wiki/index.php?title=...
> sock = urlopen(path)
> page=sock.read()
> if "There is currently no text in this page" in page:
> print "found"
> return True
> else:
> print "not found"
> return False
>
> if __name__=="__main__":
> urlexists("cheese_test")

Are you using the same user in your cgi script and within IDLE?

Ralf Schoenian

rodmc

2/14/2008 2:11:00 PM

0

Thanks for your reply, no one is running locally on my PC and the
other as the default user which occurs when the script is run through
a browser.

Best,

rod