Search and stripping in a file. My first Python script y'all! I needed this to strip a SQL string,

search-n-strip.py

import os
import sys

def main():
    print "\n"
    fn = raw_input("Enter name of file: ")
    print "Opening file: %s\n" % fn

    if not os.path.exists(fn):
        print("File does not exist!\n")
        sys.exit
    else:
        str_search = raw_input("String to strip in file: ")
        print "Searching for: %s\n" % str_search
        with open(fn, "r") as infile, open("copy.txt", "w") as outfile:
            data = infile.readlines()
            for line in data:
                rewrite = line.replace(str_search, "")
                outfile.write(rewrite)

main()