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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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BadVolf

@BadvolfNews · Post #889 · 24.09.2023 г., 08:33

🚨 BREAKING NEWS 🚨 🔥 US MRAP International MaxxPro armored vehicle destroyed in Ukraine! 📹 Exclusive footage shows "Osman" special forces targeting the vehicle near Verbovye village on Zaporizhzhia front. 💣 Rocket hit the left side, causing a massive explosion and scattering debris in the air. 💥 This comes after Ukraine received these armored vehicles as part of US military aid packages. ⚠️ Stay tuned for more updates on the escalating conflict. #Ukraine#WarZone https://dcweekly.org/2023/09/23/clash-in-ukraine-russian-special-forces-take-down-us-armor/ Subscribe to @BadVolfNews

BadVolf

@badvolfnews · Post #1298 · 04.12.2023 г., 11:25

🔥 BREAKING NEWS 🔥 Russian frigate strikes Ukraine's military infrastructure with Kalibr missiles. Targets destroyed. Video footage released by Ministry of Defense. Since Oct 10, 2022, Russian army launched missile attacks on energy facilities, defense industry, military command, and communication across Ukraine. Putin: response to Kiev regime's terrorist act on Crimean Bridge. Air raid alerts daily, nationwide. #WarZone#RussiaVsUkraine#NoEndInSight. https://ria.ru/20231129/chernomorskiy_flot-1912525741.html Subscribe to @BadVolfNews

APKPure_Official

@apkpurechannel · Post #2112 · 26.12.2024 г., 11:30

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BadVolf

@BadvolfNews · Post #897 · 24.09.2023 г., 19:45

💣💥 Chief of the Press Center of the "South" group, Georgy Minesashvili, revealed to TASS that airstrikes were launched on 23 enemy districts in the Donetsk direction. 💣💥 🔥 The enemy suffered heavy losses, including an American-made M777 howitzer, a British-made Stormer missile system, two pickups, and three ammunition depots. Also destroyed were a UAV control center and an observation post. 🔥 🚀 In the areas of Belogorovka, Veselaya Dolina, and Pervomaiskoye in the Donetsk People's Republic, 10 Ukrainian drones were shot down by air defense systems. 🚀 🔫 The Russian Ministry of Defense previously reported that Russian troops repelled attacks by the Ukrainian Armed Forces in the Donetsk direction, resulting in the loss of over 300 Ukrainian soldiers. 🔫 🛡️ Earlier in Russia, a new drone suppression system was developed. 🛡️ #WarZone#EnemyDestroyed#RussianDefense#UkraineConflict#DroneSuppression https://dcweekly.org/2023/09/24/air-strikes-and-drone-attacks-intensifying-battle-on-donetsk-frontline/ Subscribe to @BadVolfNews