How to exclude Pydantic fields from deserialisation?

I found one reasonable option - use a custom validator that always fails:

from typing import Annotated, Any
from pydantic import BaseModel, BeforeValidator, Field
def donotdeserialize(value: Any) -> Any:
    raise ValueError("Deserialization is not allowed for this field.")
class Item(BaseModel):
    name: str
    value: float
    info: Annotated[str, BeforeValidator(donotdeserialize)] = "default"
def main():
    itemdict = {"name": "Sample Item", "value": 10.5}#, "info": "extra info"}
    item = Item.modelvalidate(item_dict)
    print(item)
if name == "main":
    main()

Uncomment the comment and it will throw an error.