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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

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SingSing Announcement

@singsingchannel · Post #710 · 17.07.2024 г., 02:31

Congratulations to all Treasure NFT Session 6 owners! 🎉 Quickly unbox your NFT for a chance to receive $COW. Please note: if you don't unbox within 48 hours of receiving your Treasure NFT, we cannot guarantee the $COW reward for you. 🚀 #NFT#Web3#TreasureNFT

SingSing Announcement

@singsingchannel · Post #690 · 09.07.2024 г., 16:27

🎉 Congratulations to our lucky Treasure NFT holders who have unboxed amazing ETH rewards! 🪙✨List Treasure NFTs still have many other benefits, so don’t be disappointed if you didn't get ETH this time. 👉 Exclusive Airdrop Access: Holding a Treasure NFT grants you a seat in our exclusive airdrop event. 👉Free to Trade: Buy a Treasure, and you can choose to keep it unopened to sell on OpenSea for a higher price. 👉Unlock treasures to win amazing rewards: ✅Pioneer NFT ✅150 RUBY + 100 $COW in Cowtopia (All treasure NFT Owners who unbox a $COW reward will be added to the Closed Beta Test Whitelist of Cowtopia). ✅300 RUBY ✅ETH Keep exploring and unboxing for more surprises. Read more and open treasure at: X Post #NFT#TreasureNFT#CryptoRewards#ETH

SingSing Announcement

@singsingchannel · Post #735 · 24.07.2024 г., 04:03

🔥 Treasure NFT Session 7 is officially SOLD OUT! 🔥 🚨 Important announcement: Treasure NFT sales will be temporarily paused to allow users to utilize RUBY for activities in partner games using the SingSing SDK. Get ready for exciting experiences ahead! 🚀 #SingSing#TreasureNFT#RUBY#Gaming#Web3

SingSing Announcement

@singsingchannel · Post #709 · 17.07.2024 г., 02:15

Treasure NFT Session 6 is officially SOLD OUT! 🎉 Thank you for your amazing support. We're thrilled to announce that the whitelist for Session 7 is now OPEN! To be eligible: 1️⃣Comment on this Post, tag 3 friends. 2️⃣Fill out the form with your wallet address and the comment link👉form (this form will be closed at 14:00 UTC - July 22) Don’t miss your chance to be part of the next adventure. 🚀 Note: The additional Whitelist Pool will be opened in next few hours! #TreasureNFT#SoldOut#Session6#Whitelist#NFTCommunity

SingSing Announcement

@singsingchannel · Post #694 · 11.07.2024 г., 10:54

Treasure NFT Session 5 is officially SOLD OUT! 🎉 Thank you for your amazing support. We're thrilled to announce that the whitelist for Session 6 is now OPEN! To be eligible: 1️⃣Comment on this Post, tag 3 friends. 2️⃣Fill out the form with your wallet address and the comment link👉https://forms.gle/qutLw7av9qbzCNVm8 (this form will be closed at 14:00 UTC - July 15) Don’t miss your chance to be part of the next adventure. 🚀 #TreasureNFT#SoldOut#Session5#Whitelist#NFTCommunity