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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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@revheadcrypto · Post #603 · 25.10.2024 г., 11:29

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🚗💨Xiaomi SU7 Ultra Now Accepting Pre-Orders!💨🚗 Get ready for the future of driving with the Xiaomi SU7 Ultra, boasting an astonishing 1548 horsepower! 🌟 Chinese customers can now select their preferred dealership on the company's website, although prices are yet to be announced. Pre-sales kick off on October 29th, with estimates suggesting a price around 800,000 yuan (approximately $108,000) — more than double the current top-tier Xiaomi SU7 Max with its 673 hp! 💰 The SU7 Ultra, showcased as a prototype this summer, will trade its fully carbon body for more economical materials during production. However, the chassis, tri-motor powertrain, and advanced battery will remain unchanged! ⚡️ This Chinese super sedan aims to compete with the pricier Porsche Taycan Turbo GT, both on the market and the track. However, Xiaomi has postponed its scheduled attempt to set a record at the Nürburgring due to weather conditions. 🌧️🏁 #XiaomiSU7Ultra#ElectricVehicle#SuperSedan#Powerhouse#Innovation#CarEnthusiasts#Auto

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@revheadcrypto · Post #617 · 30.10.2024 г., 19:10

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🚗⚡️Xiaomi SU7 Ultra Sets New Nürburgring Record!🏁🔥 The stunning three-motor hypercar, boasting an incredible 1548 horsepower, has conquered the legendary Nürburgring with a jaw-dropping time of 6 minutes and 46.874 seconds! 🕒💨 Not only did it surpass the renowned Porsche Taycan Turbo GT, but it also left the Tesla Model S in the dust! 🚀✨ The four-door marvel even outperformed the reigning champion among production electric cars, the Rimac Nevera, which clocked in at 7 minutes and 5.3 seconds! 🏆 This is a game-changer for electric vehicles! 🌍⚡️ #XiaomiSU7Ultra#Hypercar#ElectricRevolution#NürburgringRecord#Performance#Innovation#EV#Racing#Auto🚀🔋

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