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to write to a file in python

hey all,
I am new to python & my program need to open up a html file ,change some part of it. I need to modify only certain part of the file which I can identify by some delimiter. Is there any method/way in python that I could use to tell my program to start writing from x to y & rest of the file untouched?
Jul 25 '07 #1
1 1309
possibly with replace(). or

Expand|Select|Wrap|Line Numbers
  1. str=fil.read(bytes before part that needs changed)+part that is changed+fil.read(bytes after change)
Jul 25 '07 #2

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