Question

Using Python, generate a random password which meets these rules and show five examples of the random passwords.

rules: password contains 6-20 characters, contain at least one lowercase letter, at least one uppercase letter, and at least one digit, must not contain three repeating characters in a row ("...aaa..." is weak, but "...aa...a..." is strong, assuming other conditions are met).

Answer 1

import random
import string

def get_random_password():
    random_source = string.ascii_letters + string.digits
    password = random.choice(string.ascii_lowercase)
    password += random.choice(string.ascii_uppercase)
    password += random.choice(string.digits)
    
    print("please enter length of password in range 6 - 20")
    length=int(input())
    for i in range(length-4):
        password += random.choice(random_source)

    password_list = list(password)
    random.SystemRandom().shuffle(password_list)
    password = ''.join(password_list)
    if(len(password)>=6 and len(password)<=20):
        return password
    else:
        return "length was invalid"
        
print(get_random_password())

Please check the code. I hope it helps/