마시멜로를 사용하여 Python에서 JSON 스키마 유효성 검사

설치

python3 -m venv .venv
source .venv/bin/activate
python3 -m pip install marshmallow

예

간단한 예

from marshmallow import Schema, fields, validate, post_load


class Person(Schema):
    name = fields.Str(required=True)
    gender = fields.Str(required=True, validate=validate.OneOf({"male", "female", "other"}))
    email = fields.Email(required=True)
    registration_datetime = fields.DateTime("%Y-%m-%dT%H:%M:%S%z")

    @post_load
    def convert_to_utc_datetime(self, data, **kwargs):
        data["registration_datetime"] = data["registration_datetime"].astimezone(datetime.timezone.utc)
        return data

person_schema = Person()

>>> person_data = {"name": "Tommy", "gender": "male", "email": "[email protected]", "registration_datetime": "2022-07-06T08:00:00+08:00"}
>>> person_schema.load(person_data)

{'gender': 'male',
 'name': 'Tommy',
 'registration_datetime': datetime.datetime(2022, 7, 6, 0, 0, tzinfo=datetime.timezone.utc),
 'email': '[email protected]'}

>>> invalid_person_data = {"name": "Tommy", "gender": "mmale", "email": "[email protected]", "registration_datetime": "2022-07-06T08:00:00+08:00"}
>>> person_schema.load(invalid_person_data)

ValidationError: {'gender': ['Must be one of: female, other, male.']}