from typing import Any
from datetime import datetime
from pydantic import BaseModel
class Model(BaseModel):
timestamp: datetime
number: int
name: str
def construct(dictionary: Any) -> Model:
return Model(**dictionary)
construct({"timestamp": "2024-03-14T10:00:00Z", "number": 7, "name":"Model"})
What is the type hint to use in construct
instead of Any
?
If, for example, I put dict[str, str]
as the type I get the errors
Argument 1 to "Model" has incompatible type "**dict[str, str]"; expected "datetime"
Argument 1 to "Model" has incompatible type "**dict[str, str]"; expected "number"
Argument 1 to "Model" has incompatible type "**dict[str, str]"; expected "name"
def construct(dictionary: dict[str, Any]) -> Model:
return Model(**dictionary)
Or, you can declare more specific type with Union
and use model_validate
method instead of model's constructor to validate input data:
def construct(dictionary: dict[str, Union[str, int]]) -> Model:
return Model.model_validate(dictionary)