Python Cyber Security – Generate random passwords of specified length

Last update on April 03 2025 12:49:00 (UTC/GMT +8 hours)

2. Random Password Generator

Write a Python program that defines a function to generate random passwords of a specified length. The function takes an optional parameter length, which is set to 8 by default. If no length is specified by the user, the password will have 8 characters.

Sample Solution:

Python Code:

import random
import string
def generate_password(length=8):
    # Define the characters to use in the password
    all_characters = string.ascii_letters + string.digits + string.punctuation
    
    # Use the random module to generate the password
    password = ''.join(random.choice(all_characters) for i in range(length))
    
    return password

password_length_str = input("Input the desired length of your password:")
if password_length_str:
    password_length = int(password_length_str)
else:
    password_length = 8

password = generate_password(password_length)
print(f"Generated password is: {password}")

Sample Output:

Input the desired length of your password: 
Generated password is: &bMFdgNo

Input the desired length of your password: 4
Generated password is: i$3H

Input the desired length of your password: 7
Generated password is: (`9z}Q%
 
Input the desired length of your password: 15
Generated password is: ?A5]3&h1e-:9OkR

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program that generates a random password of a specified length (default 8) using a combination of uppercase, lowercase, digits, and punctuation.
• Write a Python function that accepts an optional length parameter and returns a random password, ensuring that at least one character from each category is included.
• Write a Python script to generate 5 random passwords of variable lengths and print them in a formatted table.
• Write a Python program to allow the user to specify the character set for the password and then generate a random password of the given length.

Python Code Editor:

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