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Изворен канал @pythonotes · Post #397 · 12 ное.

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Использование Pydantic сегодня стало нормой, и это правильно. Но иногда на ревью вижу, что используют его не всегда корректно. Например, метод BaseModel.model_dump() по умолчанию не преобразует стандартные типы, такие как datetime, UUID или Decimal, в простой сериализуемый для JSON вид. Тогда пишут кастмоный сериализатор для этих типов чтобы функция json.dump() не падала с ошибкой. import uuid from datetime import datetime from decimal import Decimal from uuid import UUID from pydantic import BaseModel class MyModel(BaseModel): id: UUID date: datetime value: Decimal obj = MyModel( id=uuid.uuid4(), date=datetime.now(), value='1.23' ) print(obj.model_dump()) # не подходит для json.dump # { # 'id': UUID('4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1'), # 'date': datetime.datetime(2025, 12, 12, 12, 12, 12, 111111), # 'value': Decimal('1.23') # } # добавляем свой кастомный сериализатор json.dumps(obj.model_dump(), cls=MySerializer) # { # 'id': '4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1', # 'date': '2025-12-12T12:12:12.111111', # 'value': '1.23' # } В данном случае класс MySerializer обрабатывает datetime, UUID и Decimal. Например так: class MySerializer(json.JSONEncoder): def default(self, o): if isinstance(o, Decimal): return str(o) elif isinstance(o, datetime): return o.isoformat() elif isinstance(o, UUID): return str(o) return super().default(o) Специально для тех, кто всё еще так делает - в этом нет необходимости! Pydantic может это сделать сам, просто нужно добавить параметр mode="json". json.dumps(obj.model_dump(mode="json")) # { # 'id': '4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1', # 'date': '2012-12-12T12:12:12.111111', # 'value': '1.23' # } #pydantic#libs

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America 🇺🇸 News & Politics

@America · Post #9906 · 13.10.2025 г., 13:33

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😄Accept ➖➖➖➖➖➖ Accept is a regular verb. Here are five common ways to use it: 🔘to agree to take something or receive something willingly, for example a gift, an award, an apology, responsibility for something or even a form of payment. 🔜Many shops don’t accept cash anymore. 🔜The actor accepted a life achievement award at a special ceremony. 🔘 to say yes to an invitation or an offer. 🔜She accepted the job straight away! 🔜I accepted Leon's dinner invitation from us both. I hope that's OK! 🔘to believe or recognise that something is true. 🔜The relationship has been over for weeks, but he still refuses to accept it. 🔜The police officer didn't accept the suspect's answer. 🔘to consider satisfactory or to give approval. 🔜Tommy was immediately accepted by the other children at his new school. 🔜Her boyfriend's family welcomed and accepted her straight away. 🔘to endure something without complaint. 🔜He accepted that he had lost the match. 🔜Even though it makes me sad, I accept that my one minute with you is up. #Accept👨‍🏫@America ➖➖➖➖➖➖➖➖➖➖➖➖ 🆕 Crypto News @Money 😁 Crypto Game @Egame 🇺🇸 US News @America 🇯🇵 Japan News @Japan 🇦🇪 UAE News @Dubai ▶️ Popular Movies @Videos 😜 Best Funny Video @Funnys

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America 🇺🇸 News & Politics

@America · Post #9726 · 25.09.2025 г., 06:54

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😄Accept ➖➖➖➖➖➖ Accept is a regular verb. Here are five common ways to use it: 🔘to agree to take something or receive something willingly, for example a gift, an award, an apology, responsibility for something or even a form of payment. 🔜Many shops don’t accept cash anymore. 🔜The actor accepted a life achievement award at a special ceremony. 🔘 to say yes to an invitation or an offer. 🔜She accepted the job straight away! 🔜I accepted Leon's dinner invitation from us both. I hope that's OK! 🔘to believe or recognise that something is true. 🔜The relationship has been over for weeks, but he still refuses to accept it. 🔜The police officer didn't accept the suspect's answer. 🔘to consider satisfactory or to give approval. 🔜Tommy was immediately accepted by the other children at his new school. 🔜Her boyfriend's family welcomed and accepted her straight away. 🔘to endure something without complaint. 🔜He accepted that he had lost the match. 🔜Even though it makes me sad, I accept that my one minute with you is up. #Accept👨‍🏫@America ➖➖➖➖➖➖➖➖➖➖➖➖ 🆕 Crypto News @Money 😁 Crypto Game @Egame 🇺🇸 US News @America 🇯🇵 Japan News @Japan 🇦🇪 UAE News @Dubai ▶️ Popular Movies @Videos 😜 Best Funny Video @Funnys

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