A tiny Python script that creates a random password for you. Made this mostly to mess around with random and math and actually use them for something instead of just reading about them.

Ask it how long you want your password, and it builds one out of three ingredients:

• Letters (half the length, randomly upper/lowercased)
• Numbers (30% of the length, rounded up so short passwords don't skip this entirely)
• Special characters (@#$%&*) - whatever length is left over, so everything always adds up correctly

Then it shuffles all of that together so it's not predictably "letters first, then numbers, then symbols."

python password_generator.py

It'll ask for a length, then print your password. That's it.

Enter your password length: 12
xR7&K2p9#mQ4

I wanted every password to guarantee a mix of letters, numbers, and symbols instead of leaving that to chance - it's easy to write a generator that could technically spit out an all-letters password if you're unlucky. Doing the math up front (half letters, 30% numbers, remainder symbols) means every password has all three, no matter what.

The math.ceil() on the numbers is there so short passwords (like length 3 or 4) don't accidentally end up with zero numbers just because the percentage rounded down to nothing.

• Doesn't check for a minimum password length, so length 1 or 2 will act weird
• No option to exclude certain characters (looking at you, & and % that some websites hate)
• Could probably use secrets instead of random if I ever want this to be actually secure and not just a fun exercise

Just Python 3. No external packages - random and math are both built in.