How to make a password validator without the use of the any

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Dec 7, 2020 in Python by anonymous
• 120 points
539 views

1 answer to this question.

0 votes

Hi, @There,

Regarding your query I would suggest you go through this.

Creating a password validator without using any external libraries involves checking for certain conditions that you define for a valid password. You can do this using basic Python programming constructs. Here's an example of a password validator function in Python:

def password_validator(password):
    if len(password) < 8:
        return "Password must be at least 8 characters long."

    has_upper = False
    has_lower = False
    has_digit = False
    has_special_char = False

    for char in password:
        if char.isupper():
            has_upper = True
        elif char.islower():
            has_lower = True
        elif char.isdigit():
            has_digit = True
        elif not char.isalnum():
            has_special_char = True

    if not has_upper:
        return "Password must contain at least one uppercase letter."
    if not has_lower:
        return "Password must contain at least one lowercase letter."
    if not has_digit:
        return "Password must contain at least one digit."
    if not has_special_char:
        return "Password must contain at least one special character."

    return "Password is valid."

# Example usage:
password = input("Enter your password: ")
result = password_validator(password)
print(result)

This function checks for:

  • Minimum length of 8 characters
  • At least one uppercase letter
  • At least one lowercase letter
  • At least one digit
  • At least one special character (non-alphanumeric)

You can modify these rules based on your specific requirements. To use the function, just call password_validator with the password string as an argument.

answered Dec 8, 2020 by Gitika
• 65,910 points

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