TGINSIGHT SIMILAR POSTS
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
Пребарај: #longitude
@amazingeo · Post #601 · 29.01.2026 г., 20:31
🌍 The Prime Meridian, set at 0° longitude, runs through Greenwich, England. Before 1884, over 20 different countries used their own starting meridian, making navigation confusing worldwide. ✨ #coordinates⚡#longitude⚡#navigation⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels
@amazingeo · Post #489 · 02.12.2025 г., 12:31
🌍 The line of longitude at 180°, known as the antimeridian, is mostly ocean but zigzags to avoid splitting island nations. This creates the International Date Line’s famous bends and detours. ✨ #coordinates⚡#longitude⚡#dateline⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels
@amazingeo · Post #109 · 24.08.2025 г., 16:12
🌍 The 180th meridian, a line of longitude, is opposite the Prime Meridian and mostly runs through the Pacific Ocean. It’s where calendar days officially change, creating the famous International Date Line. ✨ #coordinates⚡#longitude⚡#dateline⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography🌍
@amazingeo · Post #641 · 19.02.2026 г., 12:31
🌍 The Equator is the longest line of latitude, stretching over 40,000 kilometers around Earth. By contrast, lines of longitude meet at the poles and are shortest where they cross the Arctic and Antarctic. ✨ #coordinates⚡#latitude⚡#longitude⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels
@amazingeo · Post #19 · 10.08.2025 г., 10:43
🌍 The geographic coordinates of the North Pole are always 90° north latitude, but its longitude can technically be any value—every line of longitude meets at this single icy point. ✨ #coordinates⚡#latitude⚡#longitude⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography🌍
@amazingeo · Post #220 · 12.09.2025 г., 00:12
🌍 The Greenwich Meridian and 180th meridian form a pair of opposite lines that together define Earth's zero point for both longitude and geographic coordinates worldwide. ✨ #meridian⚡#longitude⚡#navigation⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography🌍
@amazingeo · Post #65 · 17.08.2025 г., 13:12
🌍 The Greenwich Meridian, which runs through London, is the starting point for measuring longitude. All other longitudes, east or west, are measured from this invisible line. ✨ #longitude⚡#Greenwich⚡#navigation⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography🌍