Pydantic and Data Validation

Basic Validation

from pydantic import BaseModel

class Order(BaseModel):
    id: int
    quantity: int
    price: float

def validate_orders(raw: list[dict]) -> list[Order]:
    orders = []
    for r in raw:
        orders.append(Order(**r))
    return orders

Nested Models

class Customer(BaseModel):
    name: str
    orders: list[Order]

def total_revenue(customers: list[Customer]) -> float:
    total = 0.0
    for c in customers:
        for o in c.orders:
            total += o.quantity * o.price
    return total

Performance Notes

Pydantic v2 is Rust-accelerated. Pyvorin compiles the Python orchestration around Pydantic models, not the validation itself.