Types/callables

typing.Callable : see below for more detail on parsing and validation

Fields can also be of type Callable:

from typing import Callable

from pydantic import BaseModel


class Foo(BaseModel):
    callback: Callable[[int], int]


m = Foo(callback=lambda x: x)
print(m)
#> callback=<function <lambda> at 0x0123456789ab>

Caution

Callable fields only perform a simple check that the argument is callable; no validation of arguments, their types, or the return type is performed.