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: #fci
@dogdata · Post #4371 · 12.12.2023 г., 07:31
$Dogs token is the governance token for Kennel.Ai platform Web3 on chain platform Where pet dog breeders can tokenise pet dogs using NFT Blockchain is the best way to decentralise dog data Blockchain has created for pet dog breeders the opportunity to manage the industry themselves instead of having to pay and being governed by a centralised organisation #DogData#FCI#DogBreeder#blockchain#Decentralised
@dogdata · Post #4360 · 23.11.2023 г., 07:01
$Dogs token is the governance token for Kennel.Ai platform Web3 on chain platform Where pet dog breeders can tokenise pet dogs using NFT Blockchain is the best way to decentralise dog data Blockchain has created for pet dog breeders the opportunity to manage the industry themselves instead of having to pay and being governed by a centralised organisation #DogData#FCI#DogBreeder#blockchain#Decentralised
@dogdata · Post #4324 · 25.10.2023 г., 07:00
Did you know Canine Corona Virus vaccination was discovered for Dogs 🐾 over 50 years ago Has your dog had its Corona Virus vaccination ? ? ? Kennel.Ai blockchain saved pet dog life data immutably …building a decentralised system for storing dog life data without the need to pay international Kennel Clubs for paperwork Developed by breeders , built by breeders , benefits dogs and saves pet dog owners money Join Kennel.ai and start earning $DOGS tokens https://kennel.ai/login #dogs#dogdata#decentralised#KC#FCI
@dogdata · Post #4332 · 31.10.2023 г., 07:01
The original Safari Dog Show pet stroller… A Cage A Soft Crate A Crate Trolley A grooming table All in one lightweight string guaranteed for three years product… Direct from Sweden 🇸🇪 Delivery 7-10 days by courier Cost ; Medium 350 euro Large 390 euro Also home delivery with payment to driver is possible https://kennel.ai/shop Check out the Dog Blog to learn more about Pet Dogs … https://kennel.ai/blogs #Dogs#PetStroller#DogShows#DogShowTrolley#FCI
@dogdata · Post #4267 · 16.08.2023 г., 08:02
The original Safari Dog Show pet stroller… A Cage A Soft Crate A Crate Trolley A grooming table All in one lightweight string guaranteed for three years product… Direct from Sweden 🇸🇪 Delivery 7-10 days by courier Cost ; Medium 350 euro Large 390 euro Also home delivery with payment to driver is possible https://kennel.ai/shop Check out the Dog Blog to learn more about Pet Dogs … https://kennel.ai/blogs #Dogs#PetStroller#DogShows#DogShowTrolley#FCI