strict pydantic base model validating that all fields are defined

strict_base_model.py

from pydantic import BaseModel, root_validator


class StrictBaseModel(BaseModel):

    @root_validator(pre=True)
    def check_all_fields_are_defined(cls, values):
        for v in values:
            if v not in cls.__fields__:
                raise ValueError(f"{v} is not a field of {cls}")
        return values