How can I use validators in Python?

How can I use validators in Python?

You can use validators in Python to ensure that data meets certain criteria before processing it. Libraries like validators or custom functions can help.

Can you show me an example of a validator?

Sure! Here's a simple example of a validator function that checks if an email is valid:

import re

def is_valid_email(email):
    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
    return re.match(pattern, email) is not None

What if I want to validate a phone number?

You can create a similar function for phone numbers. Here's an example:

def is_valid_phone(phone):
    pattern = r'^[0-9]{10}$'
    return re.match(pattern, phone) is not None

Are there any libraries that can help with validation?

Yes, libraries like Cerberus, Pydantic, and Marshmallow provide powerful validation features for various data types.