Script gets email addresses from the text (first argument). Emails are written to the output file (second argument).

snippet_get_email_addresses.py

#!/usr/bin/env python

import sys
import re
getEmails = re.compile(r'[\w\-][\w\-\.]+@[\w\-][\w\-\.]+[a-zA-Z]{1,4}')
content=open(sys.argv[1],'r').readlines()

found = set()

for c in content:
	found.update(getEmails.findall(c))

out = open(sys.argv[2],'w')
for f in found:
	out.write(str(f)+'\n')
out.close()