Replace parts of a file?

[Kragen Sitaker]

In article <8FBFE4B0Egustaflalgonetse at 194.213.69.152>,
Gustaf Liljegren <gustafl at algonet.se> wrote:
>After the "<hr>", I want to remove everything and replace it with a 
>standardized footer from another file. I came this far:
>
>  file = open(filename, "r+")
>  start = string.rfind(file, "<hr>")

I don't think string.rfind will work well on the file object; I think
you'll need to use read() to read the contents of the file into a
string and use string.rfind on that.

>I've been looking for a function that return a substring based on a start 
>and end value, but hasn't found any. Maybe there's a better way?

Like this?

>>> mystring = 'this is a test'
>>> mystring
'this is a test'
>>> mystring[5:12]
'is a te'

HTH.
-- 
<kragen at pobox.com>       Kragen Sitaker     <http://www.pobox.com/~kragen/>
Perilous to all of us are the devices of an art deeper than we ourselves
possess.
                -- Gandalf the Grey [J.R.R. Tolkien, "Lord of the Rings"]