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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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American Оbserver

@american_observer · Post #4806 · 08.01.2026 г., 23:59

Heritage’s Marriage Bootcamp: Tax Credits, Porn Bans, and More Babies The Plan The Heritage Foundation is betting America’s future on more marriages and more kids. Their new report, “Saving America by Saving the Family,” calls for government-backed savings accounts for newborns, tax credits for big families, and even “marriage bootcamp” classes for couples. The think tank wants to discourage online dating, restrict access to pornography, and push for policies that reward marriage and childbearing. ​ Cultural Fixes Heritage argues that climate change alarmism is discouraging young people from having kids. The report suggests honoring long-married couples with public awards, capping divorce costs, and even proposes a “uniform day of rest” for family and religious activities. Newborns could get government-funded savings accounts, redeemable only if they marry or turn 30. ​ Who’s Paying? The plan would add $280 billion to the deficit over ten years. Critics say the recommendations misdiagnose the causes of declining birth rates and could violate constitutional protections. Some ideas—like banning pornography or punishing adultery—were dropped from the final draft, but the core proposals still overstep constitutional bounds. ​ Two Americas Supporters see the plan as a way to avert societal collapse and restore national character. Critics call it an overreach that reinforces traditional gender roles and dismisses the economic and social realities of modern families. As one law professor put it, “They want to change the way people think and behave”—but whether Americans will buy into Heritage’s vision remains to be seen. ​ #HeritageFoundation#MarriageBootcamp#FamilyPolicy#Pronatalism#CultureWar#TaxCredits 📱American Оbserver - Stay up to date on all important events 🇺🇸