@sgmrt · Post #2308 · 04.04.2025 г., 08:09
[EWL] UPDATE: Normal train services are progressively being restored. Free regular bus is available between #Queenstown and #BoonLay. - SMRT
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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: #queenstown
@sgmrt · Post #2308 · 04.04.2025 г., 08:09
[EWL] UPDATE: Normal train services are progressively being restored. Free regular bus is available between #Queenstown and #BoonLay. - SMRT
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@sgmrt · Post #2305 · 04.04.2025 г., 07:59
[EWL] UPDATE: Train services are progressively being restored. Free regular bus is available between #Queenstown and #BoonLay. - SMRT
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@sgmrt · Post #2059 · 25.09.2024 г., 09:59
[EWL]:UPDATE Due to a power fault, there is no train svc between Jurong East and Buona Vista. Free regular bus & bridging bus services is still available between #BoonLay and #Queenstown. - SMRT
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@sgmrt · Post #2046 · 25.09.2024 г., 07:29
[EWL]:UPDATE Due to a power fault, there is no train svc between #BoonLay and #Queenstown. Free regular bus & bridging bus services is still available between #BoonLay and #Queenstown. - SMRT
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@sgmrt · Post #2043 · 25.09.2024 г., 06:44
[EWL]:UPDATE Free regular bus & bridging bus services are still available between #BoonLay and #Queenstown. Passengers with special needs, please approach our station staff for assistance. Our staff are attending to the matter. - SMRT
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@sgmrt · Post #2042 · 25.09.2024 г., 06:29
[EWL]:UPDATE Due to a power fault, there is no train svc between #BoonLay and #Queenstown. We encourage fellow commuters to look out for persons with special needs. Please lend a helping hand and approach our station staff if you need further assistance. - SMRT
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@sgmrt · Post #2035 · 25.09.2024 г., 04:44
[EWL]:UPDATE Free regular bus & bridging bus services are still available between #BoonLay and #Queenstown. Passengers with special needs, please approach our station staff for assistance. We are working to recover service. - SMRT
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@sgmrt · Post #2034 · 25.09.2024 г., 04:24
[EWL]:UPDATE Due to a power fault, there is no train service between #BoonLay and #Queenstown. Free regular bus & bridging bus services are still available between #BoonLay and #Queenstown. We apologies for the inconvenience caused. - SMRT
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@sgmrt · Post #2030 · 25.09.2024 г., 03:49
[EWL]:UPDATE Free regular bus & bridging bus services are still available between #BoonLay and #Queenstown. Passengers with special needs, please approach our station staff for assistance. We apologies to affect your commute. - SMRT
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@sgmrt · Post #2019 · 25.09.2024 г., 02:09
[EWL]: Due to a power fault, there is no train service between #BoonLay and #Queenstown.Free regular bus & bridging bus services are available between #BoonLay and #Queenstown. - SMRT
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@sgmrt · Post #2155 · 10.10.2024 г., 05:24
[EWL] CLEARED : Train services from #Queenstown to #Bugis have resumed. Free regular bus service has ceased. - SMRT
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@sgmrt · Post #2154 · 10.10.2024 г., 05:14
[EWL] UPDATE: Fault cleared, train services are progressively being restored. Pls add 10mins train travel time between #Queenstown and #Bugis. Free regular bus service still available between #Queenstown and #Bugis. - SMRT
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