What is Pydantic validation and how does it work?

What is Pydantic validation and how does it work?

Pydantic validation is a data validation library in Python that uses Python type annotations to validate data structures.

Can you give me an example of how to use Pydantic for validation?

Sure! Here's a simple example:

from pydantic import BaseModel

class User(BaseModel):
    id: int
    name: str
    email: str

user = User(id=1, name='John Doe', email='[email protected]')
print(user)

What happens if the data doesn't match the expected types?

If the data doesn't match, Pydantic raises a ValidationError, providing details about what went wrong.

Is Pydantic only for data validation?

No, Pydantic also provides data parsing and serialization features, making it useful for data modeling.