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Изворен канал @pythonotes · Post #397 · 12 ное.

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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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The Marketing Alchemist| Artificial intelligence | Your focus on marketing gold

@markhemist · Post #55 · 18.09.2024 г., 09:03

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🅰️🩸🩸🩸🩸 📱Marketers criticize Apple for the fact that their copywriting has lost its brevity and former magic. The texts have become heavy, overloaded and unmemorable. Long-time fans of the company write that Steve Jobs would never have brought the company to such mediocrity. Tim Cook did not take courses in effective presentations 😮 What do you think about it? #Apple#Marketing#TimCook MARKHEMIST

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The Marketing Alchemist| Artificial intelligence | Your focus on marketing gold

@markhemist · Post #65 · 21.09.2024 г., 07:15

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🩸🩸🩸🩸🩸🩸1️⃣6️⃣ 📱iPhone 16 pre-orders have fallen short of Apple's expectations. The company sold 37 million smartphones in the first weekend, down 12% from last year. The iPhone 16 Pro is selling worse than the iPhone 15 Pro, but the base iPhone 16 is selling better than last year's model. Tim Cook: Where will you go when I release iOS 18 and ruin your batteries? 😄 😄 Have you already ordered new IPhone? #Iphone#Apple#TimCook MARKHEMIST

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NEWS 鏈新聞-ABMedia

@abmedia_news · Post #24464 · 08.05.2026 г., 11:30

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【📜 政策監理｜川普邀輝達、蘋果、波音等企業執行長隨行訪中，川習會商機引發企業搶進】 #川習會#波音#TimCook 川普下週邀輝達與高通執行長訪中，由財政部長貝森特負責協調名單。 波音正爭取 500 架 737 MAX 等數百億美元訂單，庫克則處於關稅威脅下的抉擇兩難。即便商機龐大，官方仍強調峰會核心為政治關係而非具體商業協議。 📍閱讀全文： https://abmedia.io/trump-administration-plans-invite-tech-ceos 📍 訂閱鏈新聞頻道：https://linktr.ee/abmedia.io

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Crypto M - Crypto News

@CryptoM · Post #64715 · 09.04.2026 г., 15:40

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🚀 Apple Executives Sell $24.2 Million in Shares Amid Stock Decline Apple executives Tim Cook and Deirdre O'Brien have sold a total of $24.2 million worth of AAPL shares in April, according to SEC filings. Cook sold 64,949 shares for $16.5 million, while O'Brien sold 30,002 shares for $7.67 million. According to NS3.AI, Apple stock was trading at $258.90 and had declined nearly 4.5% year-to-date. #Apple#TimCook#DeirdreOBrien#AAPL#StockDecline#SECfilings#SharesSale#AppleStock

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