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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 M - Crypto News

@CryptoM · Post #65223 · 12.04.2026 г., 04:14

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🚀 Sky Co-Founder Rune Faces Losses in Leveraged Oil and S&P 500 Positions Sky co-founder Rune's leveraged positions have recently experienced significant losses. According to Odaily, data from Hyperbot indicates that Rune's sevenfold leveraged short position on the Nasdaq 100 was closed 16 hours ago. Currently, he holds long positions valued at approximately $518,000, including a 20-fold leveraged long position in WTI crude oil futures and a sevenfold leveraged position in Brent oil. Additionally, Rune maintains a 20-fold leveraged short position on the S&P 500, valued at $159,000. At present, all of Rune's positions are in a loss state, with the total value dropping to around $678,000, reflecting a floating loss of approximately $61,000 and an investment return rate of -22.68%. Rune initially entered these positions last month when oil prices were rising, achieving a floating profit exceeding $1 million. However, recent fluctuations and declines in oil prices have turned these positions from profit to loss. #Sky#Rune#LeveragedTrading#OilFutures#SP500#Nasdaq100#FinancialLoss#WTICrude#BrentOil#Investing#SKY

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Crypto M - Crypto News

@CryptoM · Post #64609 · 09.04.2026 г., 10:31

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🚀 Binance to Enhance VIP Loan Services with New Fixed Rate Options According to the announcement from Binance, the platform is set to enhance its VIP Loan services starting from 2026-04-09 08:00 (UTC). This update will allow users to borrow Fixed Rate Loan orders directly from the VIP Loan page, offering a more seamless borrowing experience. The new feature aims to provide users with additional fixed rate options while benefiting from an extensive list of collateral assets available under the VIP Loan program. The key updates include the introduction of additional liquidity from Fixed Rate Loans. Users will now have the ability to borrow Fixed Rate Loan orders directly from the VIP Loan page, in addition to the standard VIP Loan fixed rates. This update also introduces streamlined batch borrowing, enabling users to borrow multiple Fixed Rate Loan orders in one batch. Furthermore, the service will support multi-collateral pledging, allowing users to use multiple asset types as collateral for a single loan. This offers a wider range of eligible collateral compared to standard Fixed Rate Loans. Additionally, the update provides flexibility at maturity. When the loan term ends, users can choose to auto-repay, repay early, or convert to a Flexible Rate loan to continue borrowing seamlessly. Binance VIP Loan is designed as a large personal and institutional over-collateralized loan service, offering competitive rates, terms, and services. It aims to unlock greater potential for users in objectives such as increased liquidity for long-term investment funds, leveraged trading, and hedging strategies. Users are advised to monitor their loan-to-value (LTV) ratios closely to avoid potential liquidations or losses due to changes in collateral ratios. Binance emphasizes that it is not responsible for any losses incurred if users fail to adjust their collateral while using Binance Loans products. #Binance#VIPLoan#FixedRateLoan#CollateralAssets#BatchBorrowing#MultiCollateral#LoanRepayment#Liquidity#LeveragedTrading#HedgingStrategies#LTVRatio#CryptoLoans

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