Need help running external program

[Tim Jarman]

Rigga wrote:

> Pink wrote:
> 
>> Rigga wrote:
>> 
>>> Hi,
>>> 
>>> I am running the line of code below from a shell script and it works
>>> fine, however I am at a total loss on how i can run it from within a
>>> Python script as every option I have tried fails and it appears to be
>>> down to the escaping of certain characters.
>>> 
>>> wget -q www.anywebpage.com -O - | tr '\r' '\n' | tr \' \" | sed -n
>>> 's/.*url="\([^"]*\)".*/\1/p'
>> If your problem is getting a python string without worrying about how to
>> escape the escape sequences, try:
>> 
>> r"""wget -q www.anywebpage.com -O - | tr '\r' '\n' | tr \' \" | sed -n
>> 's/.*url="\([^"]*\)".*/\1/p'"""
>> 
>> You should be able to pass this directly to a popen() function.
> 
> Hi,
> 
> Thanks for replying however I have just tried that and it does not seem to
> work, it doesnt return any results (i take it the r was a typo)
> 
> Thanks
> 
> RiGGa

No, the r was the point - it's there to tell Python not to do any escaping
on the string. Try it again with the r and see what happens.

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