Build a Secure Password Generator with Python (Beginner-Friendly Project)

A simple Python project that helps you build strong, customizable passwords with just a few lines of code.

As a beginner learning Python, I wanted to work on something simple yet practical. We use passwords everywhere — and creating secure ones manually can be tough. So I built a password generator that takes user preferences like length, symbols, digits, and uppercase letters — and generates a strong password in seconds.

This was a great learning experience and took less than an hour to build!

🛠️ Technologies Used:

• Python 3

• Built-in random and string libraries

🧾 Features:

✅ Ask user for desired password length
✅ Optionally include:
  🔹 Uppercase letters
  🔹 Digits
  🔹 Special characters (@, #, $, etc.)
✅ Ensure at least one character from each selected category
✅ Shuffle characters for randomness
✅ Prevent weak (short) passwords

💡 Full Python Code:

import random 
import string

def generate_password():

    while True:
      try:
        length=input("Enter the desired password length: ")
        if int(length)<4:
         print("Password length should be at least 4 characters.")
         continue
        else:
            break
      except ValueError:
         print("Please enter a valid number") 
         continue

    include_uppercase=input("Do you want to include uppercase (Yes/No)? ").strip().lower()
    include_symbol=input("Do you want to include special characters (Yes/No)? ").strip().lower()
    include_digits=input("Do you want to include digits (Yes/No)? ").strip().lower()

    lower=string.ascii_lowercase 
    uppercase=string.ascii_uppercase if include_uppercase=="yes" else ""
    special=string.punctuation if include_symbol=="yes" else ""
    digits=string.digits if include_digits=="yes" else ""

    all_characters=lower+uppercase+special+digits

    required_characters=[]

    if include_uppercase=="yes":
        required_characters.append(random.choice(uppercase))
    if include_symbol=="yes":
        required_characters.append(random.choice(special))
    if include_digits=="yes":
        required_characters.append(random.choice(digits))

    remaining_length=int(length)-len(required_characters)

    password=required_characters.copy()

    for _ in range(remaining_length):
        character=random.choice(all_characters)
        password.append(character)

    random.shuffle(password)

    str_password="".join(password)

    return str_password

print(generate_password())

🖥️ Sample Output:

Enter the desired password length: 8
Do you want to include uppercase (Yes/No)? yes
Do you want to include special characters (Yes/No)? yes
Do you want to include digits (Yes/No)? yes
0(2#20Sz

🙌 What I Learned

• Handling user input

• Using built-in modules like random and string

• Ensuring security logic in code (minimum character requirements)

• How to think about edge cases

✨ Final Thoughts

If you’re new to Python, building mini projects like this is a great way to apply what you learn quickly. Not only is it fun, but it’s also genuinely useful!

I’d love to hear your thoughts or see your own versions of this project — feel free to share your ideas or improvements in the comments below!