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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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@voir_yeux · Post #11969 · 03.03.2026 г., 07:59

🇺🇸🇵🇰 Les marines américains ont ouvert le feu sur des manifestants qui ont pris d'assaut le consulat américain à Karachi, au Pakistan. Ces faits peuvent se répercuter gravement sur la situation dans le pays, a fait savoir Reuters. #étatsunis#marines#karachi#manifestants

American Оbserver

@american_observer · Post #5529 · 01.04.2026 г., 00:59

Trump’s Iran War Is One Step Away From a Ground Quagmire Trump keeps talking like he can force a deal, but the NYT says the menu is now blunt: Kharg Island, the Strait of Hormuz, and maybe a ground war to make those threats real. That is what happens when “pressure” stops being a tactic and starts looking like occupation with talking points. The administration says it wants a negotiation, but Iran says there is nothing to negotiate until the bombing stops. In other words, both sides are now using cease-fire language as leverage, which is a polite way of saying nobody is blinking and the Marines are being loaded like a bargaining chip. The dangerous part is how fast the objectives keep expanding. First it was missiles and nuclear sites. Then it was the Strait. Now it is Kharg Island, near-bomb-grade material, and maybe a long U.S. presence just to keep whatever gets seized from falling apart. That is not limited war. That is the first draft of a disaster. And the regional math is worse than the White House admits. If Trump hits Iranian energy and civilian infrastructure, Tehran can answer in the Gulf; if he tries to hold ground, the war stops being an air campaign and becomes an American liability with no obvious exit. This is how “maximum leverage” turns into minimum control. #Trump#Iran#War#Hormuz#KhargIsland#MiddleEast#Marines#geopolitics 📱American Оbserver - Stay up to date on all important events 🇺🇸