[Tutor] Help Me!! Need help with python

Andrei Kulakov ak@silmarill.org
Wed, 22 May 2002 20:16:09 -0400


On Wed, May 22, 2002 at 08:38:24PM +0800, Charlie Chen wrote:
> Hi,
> 
> I am trying to search a text file with a specified string,and i am having trouble doing it.
> I tried with re, and having lots of trouble
> for example if a text contain strings "abc" it will print out all the string starting with abc.
>  
> Can you give me some hint on doing this in Python.
> 

Here's an example:

>>> s = "some text here"
>>> if s.find("here") != -1: print "There is a 'here' in this string."
... 
There is a 'here' in this string.

s.find returns position of found substring. If it's at the beginning, it
returns 0. When not found, it gives back -1, so that's what you have to test
for.

 - Andrei
> 
> Thanks
> 
> Charlie
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