pydantic

Package — ValidationPython 3.8+Intermediate

Data validation using Python type annotations; settings management

Quick Info

Documentation: Official Docs
Python Version: 3.8+
Dependencies: typing-extensions, annotated-types, pydantic-core (Rust binary)
Install: pip install pydantic

Learn by Difficulty

Easy2 examples

Examples|Playground

Intermediate1 example

Quick Example

python

# Install: pip install pydantic
from pydantic import BaseModel, field_validator

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

    @field_validator("age")
    @classmethod
    def validate_age(cls, v):
        if v < 0 or v > 150:
            raise ValueError("Invalid age")
        return v

user = User(name="Alice", age=30, email="alice@example.com")
print(user.model_dump())