Ever notice how websites tell you if your password is “weak,” “medium,” or “strong”? In this project, you will write a program that analyzes passwords and rates their strength based on multiple criteria.

Your program must meet the following specifications:

• Create a function called check_password_strength that takes a password as input and returns a strength rating
• Check for the following criteria:
  • Length: Password must be at least 8 characters long
  • Uppercase letters: Password contains at least one uppercase letter (A-Z)
  • Lowercase letters: Password contains at least one lowercase letter (a-z)
  • Digits: Password contains at least one number (0-9)
  • Special characters: Password contains at least one special character (!@#$%^&*)
• Assign a score based on how many criteria are met:
  • 0-1 criteria met: “Very Weak”
  • 2 criteria met: “Weak”
  • 3 criteria met: “Medium”
  • 4 criteria met: “Strong”
  • 5 criteria met: “Very Strong”
• Ask the user to enter one password
• Print the strength rating
• Print which criteria were met and which were not

Loops

We will cover loops next week in class, but for now I will give you a basic for loop to copy for your program:

password = input("Enter your password: ")

# Loop that runs once for every character in the string
for character in password:
    print(f"The next character is '{character}'")

Checking for Character Types

You will have to check each character one at a time, like this:

password = input("Enter your password: ")

# Check if string contains uppercase
has_upper = False
for character in password:
    if character.isupper():
        has_upper = True

if has_upper:
    print("The password DOES have uppercase")
else:
    print("The password does NOT have uppercase")

The isupper(), islower(), and isdigit() methods check a single character.

Example Code

# TODO: Define variables

def evaluate_character(character):
    # TODO: Update variables
    pass

# Get password from user
password = input("Enter a password: ")

# Evaluate password
for character in password:
    evaluate_character(character)

# TODO: Print the rating and which criteria were met/not met

When you’re happy with your program, upload the .py file to ThinkWave.