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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
Пребарај: #canyon
@interesting_planet_facts · Post #927 · 17.10.2025 г., 22:11
🌎 Hidden off the Pacific coast of California, the Point Dume Submarine Canyon plunges over 800 meters deep just a short distance from shore. Scientists have discovered mysterious methane seeps and rare deep-sea corals within the canyon. These underwater features support unique ecosystems not found anywhere else nearby. ✨ #ocean⚡#canyon⚡#ecosystems 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #777 · 18.09.2025 г., 20:22
🌎 In Serbia’s Vratna Canyon, stone arches called natural bridges tower up to 30 meters high. These rare formations result from rivers slowly eroding the limestone over millennia, leaving behind immense rock spans. Only three such natural bridges exist in the canyon, making it one of Europe’s most unusual geological sites. ✨ #geology⚡#Serbia⚡#canyon 👉subscribe Interesting Planet
@sarconsulurals · Post #2473 · 19.08.2025 г., 05:49
🌄🌿Blyde River Canyon — a 26 km (16 mi) natural wonder in Mpumalanga Province, northeastern South Africa. It is one of the largest canyons in the world, but unlike the Grand Canyon in the USA, it is covered with lush subtropical vegetation, earning it the name “Green Canyon”. 🌱💚 🏞 The canyon is part of the Blyde River Canyon Nature Reserve. 🌅 In local languages, Mpumalanga means The Place Where the Sun Rises. 🤝 In 2022, the Sverdlovsk Region and Mpumalanga signed a cooperation agreement. 📸 Photos: istockphoto.com #Nature#Tourism#SouthAfrica#Travel#Canyon#BlydeRiverCanyon#Mpumalanga#Africa#Sverdlovsk
@expeditionsworldwide · Post #488 · 03.07.2023 г., 13:03
🫶 Dear subscribers! We delighted that you're following our channel! On our channel, you'll find everything about travel! By using hashtags, you can easily find the content that interests you. CHANNEL CONTENT: 📹#videoclips 🧭#expedition 🏔️#hiking 🤿#diving 🧨#unusualplaces ⛩#bridges 🏔#mountains ⌛️#facts ✈️#airplanecemeteries 🗻#hills 🏜#discoveries 🏖#beaches 🈴#China 🕌#India 💒#temples 🏤#architecturalmasterpieces 🚆#journeys 🏜#vacations 🎇#UNESCO ⛰#cliffs 🌋#canyon 🌊#lakes 🏢#skyscrapers ⛲️#waterfalls ⛴#dam 🏕#inaccessibleplaces 🌋#volcano 🚀#traveladvice 🌊#sea 🌲#forest 🏝#island 🌅#desert 🌫#ponds ⛰#cave ⭐️#travelhacks ⛺️#nationalpark Thank you for being a part of our travel community! Happy exploring! 🪐Discover upcoming expeditions — https://4elementos.shop
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