replace.py

#!/usr/bin/env python2

# Arsh Chauhan
# 02/28/17
# Last Edited:02/28/17
# replace.py: replace domains of emails with a domain you want 

import re
# in_file: File with orginal emails
# out_file: Output file with original email domain replaced with domain
# domain: The domain you want
def replace_domain(in_file,out_file,domain):
	new_emails = []
	tld  = domain[domain.find('.')+1:]
	with open (in_file,'r') as emails:
		for email in emails:
			new_email = re.sub('@.',domain,email)
			new_email = new_email[:new_email.find(tld)+len(tld)]
			new_emails.append(new_email+'\n')

	with open (out_file,'w') as replaced_emails:
		for email in new_emails:
			replaced_emails.write(email)

if __name__ == "__main__":
	replace_domain('old_emails','correct_emails','catpowered.local')