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: #newtgingrich
@newtgingrich · Post #4714 · 23.05.2023 г., 13:45
#newtgingrich : RT @AmerNewMajProj: Just 1 in 5 Americans agree with Biden and the Democrats that slowing the rate of spending increases is an irresponsible cut. https://t.co/Z6QdnPa5iW
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@newtgingrich · Post #4713 · 23.05.2023 г., 08:44
#newtgingrich : RT @SpeakerMcCarthy: President Biden and I just had a productive meeting in our negotiation to responsibly raise the debt limit. It should have happened months ago, but there is a path for him to avoid defaulting on the debt. https://t.co/u3rDJmrl7v
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@newtgingrich · Post #4712 · 23.05.2023 г., 00:43
#newtgingrich : I'll be on Hannity tonight at 9:00 pm ET. Watch on @FoxNews@seanhannity
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@newtgingrich · Post #4711 · 22.05.2023 г., 23:44
#newtgingrich : RT @AmerNewMajProj: 75 percent of Americans support abortion restrictions of some kind. https://t.co/vbRbF5w3LI
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@newtgingrich · Post #4710 · 22.05.2023 г., 18:46
#newtgingrich : The American people see strong leadership from Speaker Kevin McCarthy, and the latest polls have his favorability as the highest among Congressional leadership. https://t.co/nv7UcCb3Tc
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@newtgingrich · Post #4709 · 22.05.2023 г., 17:44
#newtgingrich : RT @GOP: .@SpeakerMcCarthy: “The Democrats since they took the majority have been addicted to spending and that’s going to stop. We’re going to spend less than we spent last year.” https://t.co/cqu1xLLsWA
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@newtgingrich · Post #4708 · 22.05.2023 г., 17:44
#newtgingrich : RT @CallyGingrich: Human trafficking survivors recently testified before members of the U.S. House of Representatives about the need for lawmakers to pass legislation to increase resources for survivors and expand efforts to hold perpetrators accountable. https://t.co/MedJ3mILN0https://t.co/oeqSNDl86E
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@newtgingrich · Post #4706 · 21.05.2023 г., 22:43
#newtgingrich : RT @SpeakerMcCarthy: I literally asked the president: "What is the number? How much debt must America have before you say, 'let's stop borrowing from China?'" https://t.co/nAd1wMtDOw
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@newtgingrich · Post #4705 · 21.05.2023 г., 21:43
#newtgingrich : RT @SpeakerMcCarthy: Just got off the phone with the president while he’s out of the country. My position has not changed. Washington cannot continue to spend money we do not have at the expense of children and grandchildren. Tomorrow, he and I will meet in person to continue negotiations.
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@newtgingrich · Post #4704 · 21.05.2023 г., 17:43
#newtgingrich : The University of Austin, TX, is taking a new innovative approach to improving the American education model. Interesting reading. @AcademicRenewal https://t.co/I1dEFJnKuq
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@newtgingrich · Post #4702 · 21.05.2023 г., 13:43
#newtgingrich : We are a lot closer to the Biden default with the President’s game playing and arrogance. House Republicans will NEVER support a Biden tax increase. Biden’s comments in Japan were dishonest and destructive. If we default it will be Biden who forced it.
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@newtgingrich · Post #4701 · 21.05.2023 г., 13:43
#newtgingrich : Speaker McCarthy and House Republicans have a tremendous opportunity to create a better American future. @amspectator https://t.co/ibQaV07PsC
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