비밀번호 생성기

import secrets
import string

def generate_password(
    length: int = 16,
    use_upper: bool = True,
    use_lower: bool = True,
    use_digits: bool = True,
    use_symbols: bool = True,
) -> str:
    """Generate a cryptographically secure random password."""
    charset = ""
    required = []

    if use_lower:
        charset += string.ascii_lowercase
        required.append(secrets.choice(string.ascii_lowercase))
    if use_upper:
        charset += string.ascii_uppercase
        required.append(secrets.choice(string.ascii_uppercase))
    if use_digits:
        charset += string.digits
        required.append(secrets.choice(string.digits))
    if use_symbols:
        symbols = "!@#$%^&*()-_=+[]{}|;:,.<>?"
        charset += symbols
        required.append(secrets.choice(symbols))

    if not charset:
        raise ValueError("At least one character type must be selected")

    # Fill the rest of the password
    remaining = [secrets.choice(charset) for _ in range(length - len(required))]
    password_list = required + remaining

    # Shuffle to avoid predictable positions
    secrets.SystemRandom().shuffle(password_list)
    return "".join(password_list)

# Examples
print(generate_password(16))
print(generate_password(24, use_symbols=False))
print(generate_password(8, use_upper=False, use_symbols=False))