@sgmrt · Post #2279 · 05.03.2025 г., 09:04
[CCL]: Train services have resumed to normalcy. Free regular bus services will cease between #Promenade and #Serangoon. We are sorry for affecting your commute. - 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: #serangoon
@sgmrt · Post #2279 · 05.03.2025 г., 09:04
[CCL]: Train services have resumed to normalcy. Free regular bus services will cease between #Promenade and #Serangoon. We are sorry for affecting your commute. - SMRT
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@sgmrt · Post #2274 · 05.03.2025 г., 08:14
[CCL]: Please add 30 mins train travel time between #Promenade and #Serangoon, in both directions due to train fault. Free regular bus service is available between #Promenade and #Serangoon. Train service is still available. - SMRT
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@sgmrt · Post #2181 · 14.12.2024 г., 11:14
[CCL] UPDATE: Train fault cleared. Train service between #Promenade and #Serangoon is progressively returning to normal. Free regular bus service are still available between #Promenade and #Serangoon. - SMRT
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@sgmrt · Post #2180 · 14.12.2024 г., 11:05
[CCL] UPDATE: Please add an additional 30mins train travel time between #Promenade and #Serangoon due to a train fault. Free regular bus service are available between #Promenade and #Serangoon. - SMRT
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@sgmrt · Post #2179 · 14.12.2024 г., 10:49
[CCL] UPDATE: Additional 30mins train travel time between #Promenade and #Serangoon due to a train fault. Free regular bus service are available between #Promenade and #Serangoon. - SMRT
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@sgmrt · Post #1424 · 01.04.2022 г., 04:26
[CCL] CLEARED: Fault cleared, trains service progressively resuming. Free regular bus and bridging bus services between #Promenade and #Serangoon are still available. - SMRT
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@sgmrt · Post #2352 · 20.05.2025 г., 00:44
[CCL] UPDATE: Train fault has recovered, train services are progressively resuming. Free regular bus services are still available between #Serangoon and #BuonaVista. - SMRT
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@sgmrt · Post #2351 · 20.05.2025 г., 00:39
[CCL] UPDATE: Please continue to add 30min travel time between #PayaLebar and #BuonaVista. Free regular bus services are available between #Serangoon and #BuonaVista - SMRT
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@sgmrt · Post #2350 · 20.05.2025 г., 00:34
[CCL]: Due to a train fault, please add 30 minutes travel time between #PayaLebar and #BuonaVista. Free regular bus services are available between #Serangoon and #BuonaVista. https://bit.ly/44HtD1b - SMRT
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@sgmrt · Post #1422 · 01.04.2022 г., 04:09
[CCL] UPDATE: Additional 30mins train travel time between #Stadium and #Bartley due to a train fault. Free regular bus and bridging bus services between #Promenade and #Serangoon are available. - SMRT
@sgmrt · Post #1420 · 01.04.2022 г., 03:52
[CCL] Additional 20mins train travel time between #Stadium and #Bartley due to a train fault. Free regular bus services between #Promenade and #Serangoon are available. - SMRT
@sgmrt · Post #2278 · 05.03.2025 г., 08:54
[CCL]: Train services are progressively returning to normalcy. Please add 5 mins of additional travelling time between #Promenade and #Serangoon in both directions. Free regular bus services are available between #Promenade and #Serangoon. Shuttle train service will cease between #Bartley and #Mountbatten. - SMRT