Help with mass remove in text file

[rorley at gmail.com]

I'm trying to open a text file, remove all instances of the words
"f=x;" and "i=x;" where x can be any number 0-14.  Also, I want to
remove all {   " or ) or ( or '   } each time one of those characters
occurs respectively.  This is what I've been able to piece together...


import os, string
x = ("f=;")
y = ("i=;)
    inputFile = open('abcd.txt','r')
       data = inputFile.read()
       inputFile.close()
       search = string.find(data, x)
       if search >=1:
          data = data.replace(x)
          data = data.replace(y)
          outputFile = open('abcd.txt','w')
          outputFile.write(data)
          outputFile.close()


This doesn't work, even to just remove "f=;".  Any help would be great.

Thanks,
Reece