pass - Generate password, with custom length

pass.py

#!/usr/bin/env python
# pass
# Generate password, with custom length

import sys
import secrets
import string

if not len(sys.argv) > 1:
    length = 16
else:
    length = int(sys.argv[1])

alphabet = string.ascii_letters + string.digits
password = ''.join(secrets.choice(alphabet) for i in range(length))

print(password)