Mailist Grouper

grouper.py

# Mailist Grouper
import sys
print("""\
+-----------------------------+
| Mailist Grouper             |
| P4kL0nc4t | 24/05/2018      |
+-----------------------------+
        """)
if len(sys.argv) != 2:
    print("usage: %s <mailist.txt>" % sys.argv[0])
    sys.exit(-1)
per_mail = (mail.rstrip().split("@") for mail in open(sys.argv[1], "r").readlines() if mail.rstrip() != "")
result_dict = {}
for mail in per_mail:
    if len(mail) != 2:
        continue
    if mail[1] in result_dict:
        result_dict[mail[1]].append("%s@%s" % (mail[0], mail[1]))
    else:
        result_dict[mail[1]] = ["%s@%s" % (mail[0], mail[1])]
for key, value in result_dict.items():
    for mail in value:
        f = open(key+".txt", "a")
        f.write(mail + "\n")
        f.close()
    print("(%s) %s.txt -> %d emails written!" % (key, key, len(result_dict[key])))