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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
Пребарај: #environment
@developmentnewsindia · Post #44274 · 01.05.2026 г., 07:48
During the 09 years period (2018-2026) for Delhi, the month of April witnessed its lowest monthly average AQI of 178 in the current year 2026 (barring 2020 - the year of lockdown due to Covid): Commission for Air Quality Management #Environment
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@developmentnewsindia · Post #44094 · 26.04.2026 г., 18:16
India officially became the hottest nation on Earth with 95 out of world's 100 hottest cities. #Environment
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@developmentnewsindia · Post #43919 · 22.04.2026 г., 13:13
- 60-metre garbage mountain in Okhla is just 20 m now - Recycled landfill waste is used for massive Eco park - "Trees" have been planted too #Environment
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@developmentnewsindia · Post #43900 · 21.04.2026 г., 20:37
Tata Steel pilots HIsarna tech with ~50% lower capex and ~50% CO₂ reduction. 1 MTPA demo plant planned at Jamshedpur with ₹4,000 cr capex vs ₹9,000 cr blast furnace baseline. CO₂ cut up to 80% with CCS; commercialization targeted ~2030. #Environment https://t.co/fc7NwWIvTP
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@developmentnewsindia · Post #43470 · 11.04.2026 г., 16:02
An unprecedented weather event was witnessed in Jammu, where a tornado struck the area for nearly 10 minutes in Akhnoor. No damage to life or property has been reported. This marks the first recorded instance of a tornado in the region’s weather history. #Environment
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@developmentnewsindia · Post #43423 · 09.04.2026 г., 18:14
India just turned plastic waste into a massive business opportunity. This policy is not about recycling, it’s about building the next manufacturing wave. #Environment
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@midjourney · Post #4497 · 04.08.2023 г., 15:07
Discord @webartstd Midjourney #environment minimalistic room, hitech, future, night, neon, rtx, ultra realistic, realistic photo, 8k, 52mm subscribe • free midjourney
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@midjourney · Post #4493 · 03.08.2023 г., 15:16
Discord @smileswe Midjourney #environment Francis henri de roche, julieta london, in the style of detailed fantasy art, imaginative prison scenes, dark blue and gold, trompe - l'œil illusionistic detail, intricate cityscapes, rustic renaissance realism subscribe • free midjourney
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@midjourney · Post #4465 · 29.07.2023 г., 12:02
Discord @ack666 Midjourney #environment Luxury pop - up style bedroom, gold details, small room, chic chandelier, photorealistic, cinematic, ultra realistic, 8K detailing, 3d render, ruby details subscribe • free midjourney
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@midjourney · Post #4441 · 25.07.2023 г., 09:05
Discord @Antixian Midjourney #environment top-down view, a peaceful japanese koi pond, wooden bridge, rocks, plants, bamboo, raked sand, natural lighting, highly detailed subscribe • free midjourney
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@midjourney · Post #4437 · 24.07.2023 г., 09:20
Discord @damen_joseph Midjourney #environment sci fi control room huge room futuristic sensors computers screens maps subscribe • free midjourney
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@midjourney · Post #4409 · 20.07.2023 г., 09:08
Discord @Nikruz Midjourney #environment Map of fantasy land, two main buildings, one castle and one house, 2 big chests full of gold, graphiti style, vibrant colors, birds eye view, colourful subscribe • free midjourney
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