search for a string?

[Ken Seehof]

Shengquan Liang wrote:

> how do i search for a string in a document
>
> and inseart content of another file before
> that string?

>>> import string
>>> f = open("todo.txt")
>>> s = f.read()
>>> print s
Today's Menu:
  spam and jelly sandwitch
  eggs
  spamburger

>>> n = string.find(s, 'eggs')
>>> s = s[:n] + 'spam and ' + s[n:]
>>> print s
Today's Menu:
  spam and jelly sandwitch
  spam and eggs
  spamburger