TGINSIGHT SIMILAR POSTS
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
Пребарај: #cryptotrading
@forexsignalstrialgroup · Post #18103 · 10.03.2026 г., 09:05
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@forexsignalstrialgroup · Post #17804 · 05.02.2026 г., 11:53
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@forexsignalstrialgroup · Post #17941 · 19.02.2026 г., 12:31
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@forexsignalstrialgroup · Post #17898 · 16.02.2026 г., 11:12
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@forexsignalstrialgroup · Post #17881 · 13.02.2026 г., 10:17
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@gemscrypto100x · Post #2032 · 09.02.2026 г., 20:47
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@thekingfisher_btc · Post #3928 · 03.03.2025 г., 16:27
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@thekingfisher_btc · Post #3589 · 13.10.2024 г., 17:33
🤔 Who are you REALLY trading against in crypto? 🕵️♀️ Learn how market makers operate & how understanding their strategies can improve YOUR trading. 🎧 New podcast with The Kingfisher’s founders! #CryptoTrading#MarketMaking#Bitcoin https://www.youtube.com/watch?v=7xZf6Ae3sqI
@thekingfisher_btc · Post #3523 · 08.09.2024 г., 12:38
🤔 Who are you REALLY trading against in crypto? 🕵️♀️ Learn how market makers operate & how understanding their strategies can improve YOUR trading. 🎧 New podcast with The Kingfisher’s founders! #CryptoTrading#MarketMaking#Bitcoin https://www.youtube.com/watch?v=7xZf6Ae3sqI
@thekingfisher_btc · Post #3471 · 26.08.2024 г., 20:12
🤔 Who are you REALLY trading against in crypto? 🕵️♀️ Learn how market makers operate & how understanding their strategies can improve YOUR trading. 🎧 New podcast with The Kingfisher’s founders! #CryptoTrading#MarketMaking#Bitcoin https://www.youtube.com/watch?v=7xZf6Ae3sqI
@propheta_indicator · Post #23074 · 19.11.2025 г., 17:57
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@propheta_indicator · Post #22867 · 07.10.2025 г., 12:13
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