Editing a file by substitution

[alex23]

On Aug 12, 12:03 pm, Brad <bmal... at berkeley.edu> wrote:
> So let's say I want to edit this file and change Volume from 940 to 950.

Personally, I'd recommend avoiding re and sticking with the standard
string functions.

Something like this should be pretty effective:

>>> open('outfile','w').writelines(l.replace('Volume 940','Volume 950') for l in open('myfile','r'))