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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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ETHIOPIA 🇪🇹 | የኢትዮጵያ ድምጽ

@ethiopia · Post #230 · 12.12.2025 г., 17:05

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⚡ ETHIOPIA: AFRICA'S ENERGY POWERHOUSE ኢትዮጵያ፡ የአፍሪካ የኃይል ማዕከል Not just surviving - POWERING the future! 🌍💪 ━━━━━━━━━━━━━━━━ ⚡ GRAND ETHIOPIAN RENAISSANCE DAM (GERD) ታላቁ የኢትዮጵያ ህዳሴ ግድብ 🏗️AFRICA'S LARGEST DAM: • 74 BILLION m³ capacity • 5,150 MW power • 175m high (57 floors!) • $5 billion - 100% Ethiopian-funded! 🇪🇹 • Status: OPERATIONAL ⚡ "የኢትዮጵያ ህዳሴ በኢትዮጵያውያን" (Ethiopian Renaissance by Ethiopians) ━━━━━━━━━━━━━━━━ 💡 WHAT IT MEANS ✅ Powers all Ethiopia + exports ✅ Sudan: flood control + steady flow ✅ Egypt: regulated water supply ✅ 100% renewable - ZERO emissions ✅ Lights millions of homes across East Africa "One dam lighting half of Africa"⚡🌍 ━━━━━━━━━━━━━━━ 🌱 100% GREEN ENERGY NATION Ethiopia's mix: • Hydropower: 95%+ • Wind: Growing fast • Solar: Huge potential • Coal & gas: ZERO ✅ World's cleanest energy grid!🌿 ━━━━━━━━━━━━━━━ 🔌 ENERGY EXPORT - "AFRICA'S BATTERY" Currently powering: • 🇸🇩 Sudan: 100+ MW • 🇩🇯 Djibouti: 60+ MW • 🇰🇪 Kenya: Ready! Future: South Sudan, Somalia, Eritrea, Egypt 💰 Billions in export income + regional peace "የኢትዮጵያ ኃይል የአፍሪካን ያበራል" (Ethiopian power lights Africa) ━━━━━━━━━━━━━━━ 👷 OPPORTUNITIES FOR YOUTH ⚡CAREERS: • የኤሌክትሪክ ምህንዲሶች (Engineers) • Dam operators • Renewable specialists • Grid managers 🎓 Training at Ethiopian Electric Power, universities, GERD site 💼 Thousands of jobs, high salaries, build the future! ━━━━━━━━━━━━━━━ 💚💛❤️ FUNDED BY ETHIOPIANS Every citizen contributed: • Salary donations • Diaspora bonds • Personal savings More than infrastructure - это символ единства и гордости! "ህዳሴ - የኢትዮጵያውያን ኩራት" (Renaissance - Ethiopian Pride) ━━━━━━━━━━━━━━━ 🌍 GLOBAL IMPACT Ethiopia proves: ✅ Renewable energy works at scale ✅ Africa can self-fund development ✅ Green growth possible ✅ Cooperation beats conflict The world watches - Ethiopia delivers!🌟 ━━━━━━━━━━━━━━━ ⚡ MORE COMING 🚀 Next projects: • Koysha Dam (2,160 MW) • Wind & solar expansion • Geothermal (Rift Valley) Ethiopia's energy future = UNLIMITED!💡 ━━━━━━━━━━━━━━━ 💡 MIND-BLOWING FACTS: 🤯 Reservoir takes 3 years to fill 🤯 Could power 300+ million people 🤯 12,000+ workers built it 🤯 10+ million m³ concrete 🤯 Already generating power! ━━━━━━━━━━━━━━━ ⚡ FROM WATER TO POWER 🌊 Part 1: Water = Life source ⚡ Part 2: Power = Future engine Ethiopian Renaissance by Ethiopians, for Africa!🇪🇹💪 The future is POWERED BY ETHIOPIA! 💡🌟 ━━━━━━━━━━━━━━━ 🌍 ETHIOPIA | ЭФИОПИЯ | ኢትዮጵያ 📱@ethiopia telegram #GERD#EthiopiaEnergy#GreenEnergy#AfricaPower#EthiopianPride#RenewableEnergy#PoweringAfrica

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