Mini Project: Password Generator

import random
import string

def generate_password(length=12, use_upper=True, use_digits=True, use_special=True):
    """Generate a random password with customizable options."""
    # Build character pool
    chars = string.ascii_lowercase  # a-z
    if use_upper:
        chars += string.ascii_uppercase  # A-Z
    if use_digits:
        chars += string.digits           # 0-9
    if use_special:
        chars += "!@#$%^&*()_+-="
    
    # Generate password
    password = ''.join(random.choice(chars) for _ in range(length))
    return password

def check_strength(password):
    """Check password strength."""
    score = 0
    if len(password) >= 8: score += 1
    if len(password) >= 12: score += 1
    if any(c.isupper() for c in password): score += 1
    if any(c.isdigit() for c in password): score += 1
    if any(c in "!@#$%^&*()_+-=" for c in password): score += 1
    
    levels = {0: "Very Weak", 1: "Weak", 2: "Fair", 3: "Good", 4: "Strong", 5: "Very Strong"}
    return levels.get(score, "Unknown")

# Generate passwords
print("=== Password Generator ===\n")
for i in range(5):
    pwd = generate_password(length=16)
    strength = check_strength(pwd)
    print(f"Password {i+1}: {pwd}  [{strength}]")

# Custom options
print("\n--- Short pin ---")
print(generate_password(length=4, use_upper=False, use_special=False))

print("\n--- Letters only ---")
print(generate_password(length=10, use_digits=False, use_special=False))