Password-generator.md

12.2: Password generator

The Problem

Generate a password. Your password may contain letters in uppercase or lowercase. It also may contain digits or special characters.

Hints

To select a random character from a string, you can import random. Then use the random. choice method. This will select a character from the provided string.

Also, you can import the string module.

This is not just the string type variable. Instead, it has a lot of extra functionalities.

For example, you can use string.ascii_letters to get all the characters a to z both in lowercase and upper case. Similarly, you can use string.digits to get all the single digits. Also, you can use string.punctuation to get all the special characters.

import string
print('All letters')
print(string.ascii_letters)
print('all digits')
print(string.digits)
print('all special characters')
print(string.punctuation)

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Solution

import string
import random
 
def generate_password(size):
   all_chars = string.ascii_letters + string.digits + string.punctuation
   password = ''
   for char in range(size):
       rand_char = random.choice(all_chars)
       password = password + rand_char
   return password
 
pass_len = int(input('How many characters in your password?'))
new_password = generate_password(pass_len)
print('Your new password: ', new_password)

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Explanation

The solution is rather simple. We imported the random module and the string module. Then we created a long string by joining all ascii_letters, digits and special characters.

For that, we ran a for loop. In the loop, we select a random letter from the all_chars. To select a random character, we used random.choice. Then we add the random character to the password.

   

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