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

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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Пребарај: #yellowfever

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#YellowFever is transmitted through the bite of an infected mosquito. If you experience any of the following symptoms: Bleeding (from the nose, ears, or mouth) ➡️Sudden fever ➡️Body pain ➡️Severe headache Report to a health care facility near you immediately

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As with #cholera, cases of #yellowfever also increase during the rainy season. Mosquito control helps reduce the risk of #Yellowfever infection. Ensure you: ✅Get rid of stagnant water ✅Keep your environment clean ✅Keep your water containers covered properly ✅Wear protective clothing to prevent mosquito bites #TakeResponsibility

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Our guidelines on Infection Prevention & Control for #ViralHemorrhagicFevers include standard operating procedures & checklists to be used in the care & management of VHFs such as #LassaFever & #YellowFever Healthcare workers are urged to read & share via https://ncdc.gov.ng/themes/common/docs/protocols/111_1579986179.pdf

#Yellow Fever is an acute viral infection spread by the bite of infected mosquitoes . The disease can cause mild illness in some, but in severe cases it may lead to life-threatening complications. 👉 Protect yourself and those around you by: ✔️ Getting vaccinated ✔️ Preventing mosquito bites ✔️ Seeking medical care if symptoms appear Together, we can eliminate the threat of Yellow Fever. 💪✨ #YellowFever#StaySafe#HealthyLiving#NCDCNigeria

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