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Password Strength Checker

Certification: Intermediate Level Accuracy: 100% Submissions: 1 Points: 10

Write a Python program to create a password strength checker that evaluates the strength of a password based on various criteria. The function should return a strength level (Weak, Medium, Strong, Very Strong) along with specific feedback about what makes the password strong or weak.

Example 1
    
  
  • Input: password = "Password123!"
    • 
  
  • Output: "Very Strong"
    • 
  
  • Explanation: 
    • Password contains uppercase letters (P). 
    • Password contains lowercase letters (assword). 
    • Password contains numbers (123). 
    • Password contains special characters (!). 
    • Password length is 12 characters, which is good. 
    • All criteria are met, so it's classified as "Very Strong".
    •
Example 2
    
  
  • Input: password = "abc123"
    • 
  
  • Output: "Weak"
    • 
  
  • Explanation: 
    • Password contains lowercase letters (abc). 
    • Password contains numbers (123). 
    • Password lacks uppercase letters and special characters. 
    • Password length is only 6 characters. 
    • Multiple criteria are missing, so it's classified as "Weak".
    •
Constraints
    
  
  • 1 ≤ password.length ≤ 100
    • 
  
  • Password can contain any printable ASCII characters
    • 
  
  • Strength levels: Weak (0-2 criteria), Medium (3 criteria), Strong (4 criteria), Very Strong (5+ criteria)
    • 
  
  • Criteria: length >= 8, uppercase, lowercase, numbers, special characters
    • 
  
  • Time Complexity: O(n)
    • 
  
  • Space Complexity: O(1)
    •
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Hint
Solution

Solution Hints

    
  
  • Define criteria for password strength (length, character types)
    • 
  
  • Check if password length is at least 8 characters
    • 
  
  • Check for presence of uppercase letters (A-Z)
    • 
  
  • Check for presence of lowercase letters (a-z)
    • 
  
  • Check for presence of numbers (0-9)
    • 
  
  • Check for presence of special characters (!@#$%^&*)
    • 
  
  • Count how many criteria are met and determine strength level
    •

Steps to solve by this approach:

 Step 1: Initialize score counter to track how many criteria are met.
 Step 2: Check if password length is at least 8 characters and increment score.
 Step 3: Use regular expressions to check for uppercase letters (A-Z).
 Step 4: Use regular expressions to check for lowercase letters (a-z).
 Step 5: Use regular expressions to check for numeric digits (0-9).
 Step 6: Use regular expressions to check for special characters.
 Step 7: Based on total score, determine strength level (Weak/Medium/Strong/Very Strong).

Submitted Code :