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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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ETHIOPIA 🇪🇹 | የኢትዮጵያ ድምጽ

@ethiopia · Post #198 · 27.11.2025 г., 13:53

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## 🦴 LUCY: MEETING HUMANITY'S 3.2 MILLION YEAR OLD GRANDMOTHER ## 🦴 ሉሲ - የሰው ዘር እናት 🌍 Where human history began - literally! In Addis Ababa lies a treasure that connects every person on Earth - Lucy (Dinknesh), the 3.2 million year old fossil that rewrote human history! 💫 ## 🏛️ NATIONAL MUSEUM OF ETHIOPIA 📍LOCATION: King George VI Street, Addis Ababa 🕐HOURS: Tuesday-Sunday, 8:30 AM - 5:30 PM (Closed Mondays) 💵ENTRY FEE: - Foreigners: 100 ETB (~$1.80) - Ethiopians: 10 ETB - Photography: +50 ETB 📸PRO TIP: Visit weekday mornings (9-11 AM) for fewer crowds! ## 🦴 LUCY - DINKNESH (ድንቅነሽ) *"You are wonderful" in Amharic* ✨DISCOVERED: November 24, 1974, Afar Region ✨AGE: 3.2 million years old ✨SPECIES: Australopithecus afarensis ✨SIGNIFICANCE: 40% complete - most complete early human ancestor ever found! ✨HEIGHT: 1.1 meters - small but mighty! ## 🌟 WHY LUCY CHANGED EVERYTHING Lucy proved our ancestors walked upright BEFORE developing large brains! She literally rewrote anthropology textbooks! 📚 ## 🏛️ MUSEUM HIGHLIGHTS ✨ Lucy's iconic skeleton display ✨ Ancient royal crowns and thrones ✨ Emperor Haile Selassie's throne ✨ Traditional Orthodox Christian art ✨ Artifacts spanning 3 million years ## 💡 HOW TO GET THERE 📍 Taxi from Meskel Square: 15-20 min, ~150-200 ETB 📍 Walking from Piazza: 25 minutes 📍 Blue taxi: 10 ETB (ask for "National Museum") ## 🌍 LUCY'S STORY 🇷🇺 Soviet paleontologists collaborated with Ethiopian researchers in 1970s-80s, helping establish Ethiopia's paleontological research! 🌎 Lucy traveled to USA (2007-2013) where 3 million people visited! She safely returned home to Ethiopia! 🇪🇹 ## 🌟 FOR YOUNG ETHIOPIANS This is YOUR heritage! Lucy proves human history STARTED in Ethiopia! Let this inspire you to: ✨ Study paleontology & archaeology ✨ Become museum professionals ✨ Share Ethiopia's story globally ## 💫 THE MESSAGE Ethiopia isn't just beautiful landscapes - it's where HUMANITY began! Every person on Earth can trace ancestry back to Ethiopia! --- Visit Lucy. Know your heritage. Share your pride!🇪🇹❤️ *Where humanity's journey began, Ethiopia's future shines brightest!* ✨ #LucyEthiopia#ሉሲ#NationalMuseumEthiopia#AddisAbaba#CradleOfHumanity#EthiopianHeritage#Dinknesh#VisitEthiopia#EthiopianPride

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