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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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@CryptoM · Post #64816 · 10.04.2026 г., 01:48

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🚀 China's $270 Billion Middle East Investment Influences Iran Relations China's strategic investment of $270 billion in the Middle East is shaping its diplomatic stance towards Iran. Bloomberg posted on X, highlighting how these economic ties are influencing Beijing's foreign policy decisions. The substantial investment aims to strengthen China's presence in the region, focusing on infrastructure and energy sectors. This move is seen as a balancing act, as China seeks to maintain its economic interests while managing its relationship with Iran. The investment underscores China's broader strategy to expand its influence in the Middle East, a region critical for its Belt and Road Initiative. As China navigates these complex dynamics, its approach to Iran remains cautious, reflecting the delicate balance between economic ambitions and geopolitical considerations. #China#MiddleEast#Investment#Iran#Diplomacy#ForeignPolicy#BeltAndRoad#Infrastructure#Energy#Geopolitics

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@emagzinewspars · Post #9342 · 15.10.2025 г., 02:02

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#Beijing_Review🇨🇳📕[PDF]⬇️ 2 #October2025 #Weekly_Magazines For learning, for free(dom). @backupofmagazines In this issue , the spotlight shines on #Xinjiang 70, celebrating seven decades of transformation in the autonomous region—from economic health to cultural heritage. Global topics include #PalestineRecognition, evolving #ChinaUS relations, and the healing potential of dialogue via the #XiangshanForum. Special features explore #RuralRevitalization and tech-driven change in Qingdao and Fujian, as #ScienceInnovation takes center stage. From the vibrant Grand Bazaar to a Somali expat’s vision, this issue captures both regional pride and global dialogue. #BeijingReview#CulturalDiversity#BeltAndRoad#EducationMatters#ChinaPerspective

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