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: #bringyourown
@NEASingapore · Post #61 · 11.06.2020 г., 01:30
#SayYesToWasteLess by bringing our own clean containers and saying no to disposables. Every little action, even if seemingly insignificant, can have an impact on our Earth. Learn more about what climate actions you can take here: www.mewr.gov.sg/climateaction#BringYourOwn
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@NEASingapore · Post #1197 · 19.12.2025 г., 01:01
Getting busy this holiday season? Don’t forget to keep your habits sustainable! Bring your tote for shopping, your lunchbox & cutlery for takeaway meals, and reusable plates for gatherings. #BringYourOwn#TowardsZeroWaste#SayYEStoWasteLess
@NEASingapore · Post #237 · 01.08.2021 г., 01:30
Heading out to tabao your next meal? Don’t forget to #BringYourOwn reusables! Let’s #SupportOurHawkers and reduce waste by bringing our own containers 😊
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@NEASingapore · Post #729 · 20.12.2023 г., 01:02
Ready for takeaway feasts? This holiday season, let's switch to reusable containers and cut down on disposables! #SayYEStoWasteLess#TowardsZeroWaste#BringYourOwn#BYO
@NEASingapore · Post #81 · 24.07.2020 г., 01:00
It’s always good to pack reusable containers in your bag because you never know when cravings may strike! #BringYourOwn😊 Have other ideas on zero waste? Share it on social media this #YED2020, so that we can motivate more people to move #TowardsZeroWaste! www.cgs.gov.sg/yed
@NEASingapore · Post #718 · 11.12.2023 г., 04:02
Santa’s not the only one with a reusable bag! When visiting the mall to shop, let’s bring our reusable bags. Together, we can ensure fa-la-la-la-la, la-la-la-less packaging waste. 🛍️ #SayYEStoWasteLess#TowardsZeroWaste#BringYourOwn#BYO#BYOB
@NEASingapore · Post #72 · 23.06.2020 г., 11:02
Only sit on seats without markings when dining in at #OurHawkerCentres to maintain #SafeDistancing. If the seating capacity is limited, #BringYourOwn clean containers and choose to take-out instead. Let’s unite to #FightCOVID19 together! 💪#SGUnited
@NEASingapore · Post #716 · 08.12.2023 г., 04:03
Our 2023 Wrapped is in! 'Bringing Your Reusable Bag for Shopping' is the chart-topping single we all need. From reusable essentials to recycling mastery, we've built an eco-habit playlist that's pure chart green. Top tracks include 'Reusable Bag Groove', 'Recycling Rhythm', and 'Energy-Saving Melody'. Fellow eco-warriors, let’s keep this #SustainableSG chart-topper habit going strong! #TowardsZeroWaste#BYOB#BringYourOwnBag#BringYourOwn#BYO#3Rs#Reduce#Reuse#Recycle#EnergyEfficiency