PracticePython/Exercise16

Exercise16.py

import random
import string
lower_case = set(string.ascii_lowercase)
upper_case = set(string.ascii_uppercase)
digits = set(string.digits)
special_char = set(string.punctuation)

def password_generator():
	length = int(raw_input("How long a password do you want (at least 4)? "))
	password = set(random.sample((lower_case | upper_case | digits | special_char), length))
	while password.isdisjoint(lower_case) or password.isdisjoint(upper_case) \
	or password.isdisjoint(digits) or password.isdisjoint(special_char): # this code ensures the password contains at least one character from each sub-set.
		password = set(random.sample((lower_case | upper_case | digits | special_char), length)) 
	else:
		password_list = list(password)
		password_string = "".join(password_list)
	print("Your new password is: %s") %(password_string)

password_generator()