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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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@venturevillagewall · Post #3944 · 21.01.2025 г., 22:00

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Trump Calls for Ross Ulbricht's Release Senator Rand Paul urges President Trump to free Ross Ulbricht, the founder of Silk Road. Meanwhile, Coinbase CEO Brian Armstrong states Trump is excited about a Strategic Bitcoin Reserve, aiming to be the first Bitcoin President. Additionally, Binance's CEO predicts a crypto all-time high in 2025 amid clearer U.S. regulation under Trump. Critical Metals Corp raises $500M for Bitcoin reserve strategy as they accept BTC as treasury asset—first Nasdaq company in critical minerals sector to do so. 🔗 Related articles from Watcher Guru and CoinDesk. #Bitcoin#USDC#Crypto#Trump#Coinbase#Binance#HesterPeirce#SEC#Decentralization#Finance#Investment#CriticalMetals#Aviation#Regulation#Liberty#Decentralized#Blockchain#CryptoNews#VC #Bitcoin#USDC#Crypto#Trump#Coinbase#Binance#HesterPeirce#SEC#Decentralization#Finance#Investment#CriticalMetals#Aviation#Regulation#Liberty#Decentralized#Blockchain#CryptoNews#VC

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@venturevillagewall · Post #4226 · 23.02.2025 г., 22:00

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Biden Faces Bitcoin Chaos; SEC Crypto Shift 🚨 The Biden administration and U.S. Marshals Service can't account for billions in Bitcoin, raising concerns of theft. Meanwhile, 29.5M #XRP valued at $75.4M transferred to #Coinbase. 🔍 The SEC is reportedly dismantling its crypto enforcement program, potentially ending the Ripple appeal. Former SEC chief John Reed Stark highlights a shift in the SEC’s regulatory approach, with key figures removed from crypto litigation. Major changes expected, including a rebranding of the crypto unit and possible suspension of crypto enforcement. Expect deeper institutional instability and a new landscape for digital assets. 🔗Details on XRP Transfer | Leviathan News on Bybit Hack #Bitcoin#XRP#Coinbase#SEC#Crypto#Ripple#SOL#Bybit#Blockchain#Enforcement#Regulation#DigitalAssets#SECReform#Compliance#HesterPeirce#Laundering#WhaleAlert#CryptoInvestigation#MarketTrends#USTreasury#VC