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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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Venture Village Wall 🦄

@venturevillagewall · Post #3605 · 20.12.2024 г., 18:00

K33 Predicts Bull Run Peak Date 📈 K33 analysts forecast the peak date of the bull run. ⚖️ Craig Wright receives a conditional sentence for contempt of court. 💵 VC investors are retreating from crypto as the market shifts. 📊 Bitcoin's failure at $100K triggered over $1 billion in liquidations. 🐋 El Salvador expands Bitcoin purchases despite IMF deal. 💬 Tornado Cash co-founder demands dismissal of charges. 👾 Ilya Lichtenstein claims sole responsibility for Bitfinex hack. 💰 Cryptopia clients received $225 million in assets from liquidators. ✅ SEC approves first hybrid ETFs based on Bitcoin and Ethereum. 👁 German regulator orders World to delete user data. 👀 Investors file a lawsuit against the HAWK token team. ⚽️ American football player to receive part of salary in Bitcoin. 🚀 Cathie Wood confirms Bitcoin price prediction above $1 million. #K33#CraigWright#Crypto#Bitcoin#Liquidations#ElSalvador#TornadoCash#Bitfinex#Cryptopia#SEC#ETFs#Germany#HAWK#Football#CathieWood#Investors#Funding#VentureCapital#Market#Investments

Venture Village Wall 🦄

@venturevillagewall · Post #3602 · 20.12.2024 г., 17:03

Crypto Highlights: Recent Developments 📈 K33 analysts have predicted the peak date of the bull run. ⚖️ Craig Wright received a conditional sentence for contempt of court. 💵 VC investors are leaving crypto, while crypto distances itself from VC investors. 📊 A Bitcoin crash at $100,000 led to over $1 billion in liquidations. 🐋 El Salvador expanded its Bitcoin purchases despite an IMF deal. 💬 Tornado Cash co-founder demands charges be dropped. 👾 Ilya Lichtenstein claims sole responsibility for the Bitfinex hack. 💰 Cryptopia clients received $225 million in assets from liquidators. ✅ SEC approved the first hybrid ETFs based on Bitcoin and Ethereum. 👁 German regulator ordered World to delete user data. 👀 Investors sued the team behind the HAWK token. ⚽️ An American football player will receive part of his salary in Bitcoin. 🚀 Cathy Wood confirmed her Bitcoin price prediction exceeds $1 million. 🤑 Colin Wu shared the success story of a 24-year-old crypto trader. #K33#CraigWright#VC#Bitcoin#Liquidation#ElSalvador#TornadoCash#Bitfinex#Cryptopia#SEC#ETFs#Germany#HAWK#Football#CathyWood#CryptoTrader#CryptoNews#Investments#MarketTrends#CryptoRegulation#Blockchain