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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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Crypto News & Web3 Events | TON Ecosystem

@tonevents_en · Post #939 · 19.10.2024 г., 10:38

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Updated smart contracts from EVAA, audit results from QuantStamp, and collaboration with OKX 🔒 About two weeks ago, EVAA updated its smart contracts for LP pools, improving code quality, enhancing security, and increasing decentralization. The SDK has been completely rewritten for this version, with the changes detailed below: 🟡 A more reliable way to obtain coin price data (Price Feed). 🟡 A new feature for tracking rewards on-chain has been added. 🟡 A reserve has been added to monitor liquidation metrics. 🟡 Overall security has been enhanced. 👀 Verify security and reliability of the new smart contracts, #QuantStamp conducted a thorough audit, releasing a final report stating that everything passed successfully. You can read it here. 💱 The #OKX exchange has integrated the EVAA landing page into its DeFi aggregator. OKX users can now easily engage in decentralized lending on the TON blockchain and earn passive income through the EVAA protocol directly from the OKX interface, providing a smooth transition for users between the OKX exchange and the ❤️#TON ecosystem. 🦏 Another partnership, this time EVAA x RhinoFi. We now have the alternative ability to make secure and fast multi-chain transfers in $USDT through the RhinoFi bridge directly into our TON network with no platform fees. EVAA app | News | Chat | Website

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Venture Village Wall 🦄

@venturevillagewall · Post #3599 · 20.12.2024 г., 15:25

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DuckChain Raises $5M for Web3 DuckChain, a consumer layer for Web3, successfully secured $5M in funding from notable investors including dao5, Offchain Labs, Kenetic, and others. #DuckChain#Web3#Funding#dao5#OffchainLabs#Kenetic#DWFVentures#OakGroveVentures#SkylandVentures#GeekCartel#GateLabs#PrestoLabs#Camelot#Quantstamp

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Venture Village Wall 🦄

@venturevillagewall · Post #3600 · 20.12.2024 г., 16:00

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DuckChain Secures $5M Funding TON’s consumer layer for Web3 DuckChain has successfully raised $5 million in a funding round with participation from multiple investors including dao5, Offchain Labs, DWF Ventures, and others. #DuckChain#Web3#Funding#TON#dao5#OffchainLabs#DWF#Investors#Ventures#Kenetic#Skyland#GeekCartel#GateLabs#PrestoLabs#Camelot#Quantstamp#Blockchain#Finance#Investment#Technology

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#duckchain #web3 #funding #ton #dao5 #offchainlabs #dwf #investors #ventures #kenetic #skyland #geekcartel #gatelabs #prestolabs #camelot #quantstamp #blockchain #finance #investment #technology