What is Pydantic serialization and how does it work?

What is Pydantic serialization and how does it work?

Pydantic serialization is a feature in the Pydantic library that allows you to convert Python objects to JSON and vice versa. It ensures that the data conforms to the defined data models.

Can you give me an example of how to serialize a Pydantic model?

Sure! Here's a simple example:

from pydantic import BaseModel

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

user = User(id=1, name='John Doe')
serialized_user = user.json()
print(serialized_user)  # Output: {"id": 1, "name": "John Doe"}

What if I want to deserialize the JSON back to a Pydantic model?

You can use the parse_raw method to deserialize JSON back into a Pydantic model. For example:

user_data = '{"id": 1, "name": "John Doe"}'
user = User.parse_raw(user_data)
print(user)  # Output: id=1 name='John Doe'

Are there any validation features during serialization?

Yes, Pydantic performs validation during serialization. If the data does not conform to the model, it raises a validation error.