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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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Indian Development News 🇮🇳

@developmentnewsindia · Post #44446 · 05.05.2026 г., 11:00

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BEL secured a ₹1,476 crore Ministry of Defence contract for the Indian Army to supply the Ground Based Mobile Electronic Intelligence System (GBMES). This fully indigenous system, designed by Defence Electronics Research Laboratory (DLRL), Hyderabad, and manufactured by BEL, detects, classifies, and locates radar signals, while intercepting and analysing communication signals. #Defence

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Indian Development News 🇮🇳

@developmentnewsindia · Post #44351 · 03.05.2026 г., 05:17

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India to manufacture ~140 AMCA stealth jets at Puttaparthi; Andhra allots 600 acres to Defence Research and Development Organisation. Project size ~₹1 lakh crore; final assembly/testing hub near Aeronautical Development Agency Bengaluru base. #Defence

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Indian Development News 🇮🇳

@developmentnewsindia · Post #44278 · 01.05.2026 г., 08:09

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BREAKING LR-AShM enters Phase-II trial: India successfully test fires Long Range Anti-Ship hypersonic Missile from a #defence facility off Odisha coast. Indigenously developed by DRDO, the two-stage hypersonic glide weapon can strike moving and static naval vessels at distances up to 1,500 km and boasts high-accuracy terminal manoeuvres. Travelling at a speed of over Mach 5, it can also target warships or land surfaces. The missile will have multiple warhead configurations.

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Indian Development News 🇮🇳

@developmentnewsindia · Post #44267 · 01.05.2026 г., 02:34

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Paras Defence & Space Technologies has won a significant Rs 7.72 crore contract from DRDO for developing advanced Ku/C-Band Satellite Communication Phased Array Antennas designed for airborne defence applications. The project has a comprehensive timeline extending until April 29, 2028, reflecting the sophisticated nature of the satellite communication technology development required for modern defence operations. Source #Defence

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Indian Development News 🇮🇳

@developmentnewsindia · Post #44225 · 30.04.2026 г., 09:27

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Report- Speaking at the ANI National Security Summit 2.0 in New Delhi, #Defence Secretary Shri Rajesh Kumar Singh said the procurement process for the AMCA is underway and a Request for Proposal (RFP) is expected to be issued soon to shortlisted private sector players. He also indicated that India is also exploring collaboration on sixth-generation fighter aircraft, given the massive investment such programmes require. “We’ve made it clear… that we are interested and we could consider partnering them for a sixth generation fighter program. Let’s see what the response is,” he said.

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Indian Development News 🇮🇳

@developmentnewsindia · Post #44194 · 29.04.2026 г., 14:08

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Just in: The DRDO and the Indian Navy jointly and successfully conducted the first 'salvo launch' of the 'Naval Anti-Ship Missile-Short Range' (NASM-SR) from an Indian Navy helicopter platform off the coast of the Bay of Bengal in Odisha. #Defence

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