Python Password Generator and Password Strength Checker

Two small Python command-line tools: a random password generator with guaranteed numbers of digits, uppercase, lowercase, and special characters, and a password strength checker that rates a password by the number of possible character combinations.

Overview

This project contains two independent scripts:

  • Password Generator — creates a random password of configurable length and character composition
  • Password Strength Validator — assesses how strong a given password is based on its character variety

Scripts

Password Generator (Password_Generator.py)

Generates a random password based on specified requirements.

Default settings (hardcoded in __main__):

Parameter Value
Total length 30 characters
Digits 5
Uppercase letters 5
Lowercase letters 5
Special characters 5
Remaining Random mix of all character types

The generated characters are shuffled so the guaranteed characters are not grouped at the start.

Security note: the generator uses Python’s random module, which is designed for simulations, not security. For real passwords, use the secrets module (for example secrets.choice(...) and secrets.SystemRandom().shuffle(...)) or a password manager.

Usage (from the Cosole_Code folder):

python Password_Generator.py

The script prints one 30-character password; every run produces a different one.

Password Strength Validator (PasswordStregth.py)

Evaluates a password by calculating the total number of possible combinations given its character composition: 26 options for each lowercase letter, 26 for each uppercase letter, 10 for each digit, and the size of the special-character set for each special character, multiplied together.

Strength levels:

Strength Threshold (combinations)
Very Strong ≥ 10¹⁶
Strong ≥ 10¹²
Moderate ≥ 10⁸
Weak ≥ 10⁴
Very Weak < 10⁴

Usage:

python PasswordStregth.py

The script runs in a loop, letting you check multiple passwords until you choose to exit.

Example session (results confirmed by running the script):

Enter your password: hello
Weak

More ! (Y|N) : Y

Enter your password: P@ssw0rd!2024
Very Strong

More ! (Y|N) : N

The rating only considers length and character types. P@ssw0rd!2024 scores Very Strong even though it follows a very common pattern that password crackers try early. For a realistic estimate, use a library such as zxcvbn, which also checks dictionary words and common substitutions.

Requirements

No external dependencies. Both scripts use only Python standard library modules (random, string, re, os).

File Structure

Password Utility/
└── Cosole_Code/
    ├── Password_Generator.py    # Random password generator
    └── PasswordStregth.py       # Password strength validator

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