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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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Russian Consulate in Cape Town

@rusconct · Post #2140 · 10.01.2025 г., 08:39

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🇷🇺Russia’s Foreign Ministry Ambassador-at-Large for the G20, APEC and BEP issues Marat Berdyev: Russia’s participation in key multilateral forums such as the #G20 and #APEC contributes to the accelerated formation of a multipolar world order and economic system. 📈In terms of aggregate GDP, the BRICS members have already surpassed the G7, with their share standing at 37%, compared to less than 30% for the G7. According to some expert estimates, the countries of the Global Majority will drive up to 75% of global economic growth over the next few decades. Russia plays a significant role in this positive trend of fair optimization of production potentials. 🤝We continue to actively develop international economic cooperation, focusing on friendly regions. According to the Federal Customs Service (FCS), Russia's external trade volume in 2024 is expected to reach $700 billion. Approximately 70% of export-import operations already involve the Asia-Pacific Region (#APR). 🌍Trade with Africa has been expanding, reaching a peak of $25 billion in 2023. The Russian economy grew by about 4% in 2024, demonstrating resilient performance. This growth occurred against the backdrop of more modest global averages, limited to 3.1%, and stagnation in many European countries. 🌾Russian companies are playing an increasingly significant role not only in supplying critical energy and food resources but also in high-tech sectors and manufacturing industries. We are intensifying transactions in national currencies, particularly the Russian ruble, which accounts for 80-90% of trade with key partners such as China and the EAEU. Under the initiative of President Vladimir Putin, the Big Eurasian Partnership (#BEP) is building a transit framework centered on Russian territory. Transit capacity is expanding, and the utilization of the "West-East" and "North-South" transport corridors is increasing, along with the operation of the Northern Sea Route (#NSR). 🚢In the past year, the NSR handled a record volume of over 37 million tons of commercial cargo. At the #G20 and #APEC significant momentum has been given to the reform of global economic institutions in the interests of the Global South/East. 📈Constructive approaches have been adopted, aiming to preserve an open trade and investment environment, form energy balances on a technologically neutral basis, and support digital transformation. ❗️We will continue to move forward with partners in this promising direction at multilateral economic diplomacy platforms. Photo: www.rosstip.ru #G20#APEC#RussianMFA

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