Password Generator In Python

Password Generator In Python

There are plenty of tools out there to help generate passwords (password managers, websites, etc), but what’s the fun in that? Often, you just need a quick throwaway password for a website or user password reset. So, let’s make a password generator in Python!

Traditionally, good passwords should have the following characteristics:

  • At least 8 characters long
  • Upper and lowercase letters
  • Numbers
  • Special Symbols

To achieve this, we’ll import the string library to generate a set of characters based on the above criteria. Then, we’ll handle user input using While loops, and create our passwords by randomly selecting from our character set! View the full code below or on my GitHub.

Password generator in Terminal
#Generates passwords from 8-20 characters
#by Joe Pestovich 11/29/22
import random
import string

print("\n--------------------------------------\n----Super Cool Password Generator-----\n--------------------------------------\n")
charset = string.ascii_letters + string.digits + string.punctuation
print("Current character set: " + charset + "\n")

#define functions to get password length and generate password
def get_length():
    while True:
        try:
            passlength = int(input("\nEnter Password Length (8-20 characters): "))
        except ValueError:
            print("Sorry didn't catch that \_O_/ Make sure you enter something I can understand")
            continue
        if passlength < 8 or passlength > 20:
            print("Password must be at least 8 characters and no more than 20")
            continue
        else:
            return passlength

def gen_password(passlength):
    print("\nPassword will be " + str(passlength) + " characters long!")
    password = ''
    i = 0
    while i < passlength:
        password += (random.choice(charset))
        i = i + 1
    print("Here's your password:\n" + password +"\n")

#call functions & give user option to generate more passwords
passlength = get_length()
gen_password(passlength)
while True:
    try:
        another = str.lower(input(("Want another password? y/n: ")))
    except ValueError:
        print("Sorry didn't catch that \_O_/ Make sure you enter something I can understand")
        continue
    if another == "y" or another == '':
        print("Here we go again!")
        passlength = get_length()
        gen_password(passlength)
        continue
    if another == "n":
        print("\nOk, see ya next time :D\n")
        break
    else:
        print("\nEnter 'N' or 'n' to exit!\n")
        continue