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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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Amazing Geography 🌍

@amazingeo · Post #279 · 21.09.2025 г., 20:31

🌍 In 2021, a record-breaking heatwave in western Canada triggered hundreds of wildfires, generating so much smoke it traveled thousands of kilometers and reached northern Europe. ✨ #disasters⚡#wildfires⚡#climate⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography🌍 ​

Amazing Geography 🌍

@amazingeo · Post #639 · 18.02.2026 г., 12:31

🌍 New satellite sensors can track wildfires as they ignite, mapping heat signatures from space day and night. This real-time data helps firefighters respond faster to changing fire fronts. ✨ #satellites⚡#remote-sensing ⚡#wildfires⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels ​

Reuters: World

@reutersworldchannel · Post #149361 · 14.10.2021 г., 16:08

Fire crews fight California wildfire near Reagan ranch Planes and fire crews tackled a fast-moving wildfire near former President Ronald Reagan’s ranch in California #News#Reuters#California#ReaganRanch#Wildfires Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖

Reuters: World

@reutersworldchannel · Post #149353 · 14.10.2021 г., 13:16

October 14, 2021: Norway mass killing, Taiwan fire, Big Tech, U.S. Capitol riots, California October 14, 2021: Norway mass killing, Taiwan fire, Big Tech, U.S. Capitol riots, California 1. A 37-year-old Danish citizen who had converted to Islam is suspected of killing five people with a bow-and-arrow and other weapons in the Norwegian town of Kongsberg in a rare incident of mass killing in Norway, police said. 2. A fire in a residential building in the southern Taiwanese city of Kaohsiung has killed 46 people and injured another 41, the government said. 3. A bipartisan group of lawmakers, headed by Democrat Amy Klobuchar and Republican Chuck Grassley, plan to introduce a bill that would bar Big Tech platforms, like Amazon and Google, from favoring their products and services. 4. A congressional panel investigating the deadly Jan. 6 riot at the U.S. Capitol said it has issued a subpoena seeking testimony and records from Jeffrey Clark, a former senior official at the Justice Department who was a proponent of former President Donald Trump's false election fraud claims. 5. California firefighters took advantage of a break in strong winds to get an aircraft aloft and dump retardant on a fast-moving wildfire that was within a half mile of former President Ronald Reagan's ranch, officials said. #Norway #Taiwan #Fire #BigTech #Democrats #Republicans #AmyKlobuchar #ChuckGrassley #UnitedStates #CapitolRiots #Trump #California #Wildfires #RonaldReagan #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖