@sgmrt · Post #2330 · 23.04.2025 г., 01:09
[EWL] CLEARED: Train service between #Tampines and #PasirRis have resumed. Free regular bus service ceased. - 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: #tampines
@sgmrt · Post #2330 · 23.04.2025 г., 01:09
[EWL] CLEARED: Train service between #Tampines and #PasirRis have resumed. Free regular bus service ceased. - SMRT
@sgmrt · Post #2329 · 23.04.2025 г., 00:59
[EWL] UPDATE: Fault cleared. Train service resumed. Free regular bus service is still available between #Tampines and #PasirRis. - SMRT
@sgmrt · Post #2325 · 23.04.2025 г., 00:09
[EWL] UPDATE: Please add 10 mins train travel time between #Tampines and #PasirRis, in both directions due to track point fault. Free regular bus and shuttle train services are available between #Tampines and #PasirRis. Normal train service is available for the rest of East West - SMRT
@sgmrt · Post #2324 · 22.04.2025 г., 23:44
[EWL] UPDATE: Please add 10 mins train travel time between #Tampines and #PasirRis, in both directions due to track point fault. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between #Tampines and #PasirRis. Train - SMRT
@sgmrt · Post #2323 · 22.04.2025 г., 23:29
[EWL]: Pls add an additional 10 mins of travelling time between #Tampines and #PasirRis. The eastbound train will turn around at #Tampines towards westbound. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between - SMRT
@sgmrt · Post #2322 · 22.04.2025 г., 23:29
[EWL]: Pls add an additional 10 mins of travelling time between #Tampines and #PasirRis. The eastbound train will turn around at #Tampines towards westbound. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between https://bit.ly/4jEYkYR - SMRT
@sgmrt · Post #2321 · 22.04.2025 г., 23:24
[EWL] UPDATE: Train svc is available btwn #Tampines and #PasirRis. Please add 10 mins train travel time from Tampines to Pasir Ris, towards Pasir Ris due to track point fault. Free regular bus service is available between Tampines and Pasir Ris. - SMRT
@sgmrt · Post #2320 · 22.04.2025 г., 22:59
[EWL]: Due to a track point fault, pls add additional 10mins train travel time between #Tampines and #PasirRis. Free regular bus service is available between #Tampines and #PasirRis. - SMRT