Најди сличен содржај

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

Hashtags

#pydantic #libs

Резултати

Пронајдени 2 слични објави

Пребарај: #wildlifephotography

当前筛选 #wildlifephotography清除筛选

ETHIOPIA 🇪🇹 | የኢትዮጵያ ድምጽ

@ethiopia · Post #99 · 16.08.2025 г., 05:54

Најди слично Погледај

🦁 SIMIEN MOUNTAINS: WHERE LIONS WALK IN CLOUDS 🏔️ *Ethiopia's Kingdom Above the Clouds at 4,000+ Meters* In the remote highlands of northern Ethiopia lies one of Africa's most spectacular wilderness areas - the Simien Mountains, where majestic lions roam at altitudes higher than most European peaks. The Last High-Altitude Lions: 🌟 Altitude record: 4,620m - highest lion habitat on Earth ⚡ Population: Only 50-80 lions remain in this unique ecosystem 🏔️ Terrain: Dramatic escarpments, deep gorges, alpine meadows Tourism Gold Rush: • Exclusive experience: 99% of tourists never see high-altitude lions • Photography paradise: Lions silhouetted against cloud-covered peaks • Adventure tourism: $3,000-5,000 per expedition The Simien Mountains offer what no other destination can - lions literally walking among clouds in Earth's most dramatic landscape. #SimienMountains#EthiopianLions#AdventureTourism#WildlifePhotography

Hashtags

#simienmountains #ethiopianlions #adventuretourism #wildlifephotography

ETHIOPIA 🇪🇹 | የኢትዮጵያ ድምጽ

@ethiopia · Post #33 · 19.06.2025 г., 17:30

Најди слично Погледај

🦁 **SIMIEN MOUNTAINS: WHERE LIONS WALK IN CLOUDS** 🏔️ *Ethiopia's Kingdom Above the Clouds at 4,000+ Meters* In the remote highlands of northern Ethiopia lies one of Africa's most spectacular wilderness areas - the Simien Mountains, where majestic lions roam at altitudes higher than most European peaks. **The Last High-Altitude Lions:** 🌟 **Altitude record**: 4,620m - highest lion habitat on Earth ⚡ **Population**: Only 50-80 lions remain in this unique ecosystem 🏔️ **Terrain**: Dramatic escarpments, deep gorges, alpine meadows **Tourism Gold Rush:** • **Exclusive experience**: 99% of tourists never see high-altitude lions • **Photography paradise**: Lions silhouetted against cloud-covered peaks • **Adventure tourism**: $3,000-5,000 per expedition The Simien Mountains offer what no other destination can - lions literally walking among clouds in Earth's most dramatic landscape. #SimienMountains#EthiopianLions#AdventureTourism#WildlifePhotography

Hashtags

#simienmountains #ethiopianlions #adventuretourism #wildlifephotography