以太坊区块链新闻| ETH 以太币圈热瓜
@ethereumglobalnews · Post #1229 · 28.10.2025 г., 04:58
📊 Top Perp DEX Aggregators #Insight#DeFi#PerpDEX 📌 衍生品市場仍是主戰場，流動正向以太坊生態聚集。 👍@EthereumGlobalNews 🥲 🥲Follow for more Web3News 🤣
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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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以太坊区块链新闻| ETH 以太币圈热瓜
@ethereumglobalnews · Post #1066 · 19.10.2025 г., 06:28
😤 永續合約賽道競爭升溫 ： Hyperliquid 稱王Aster 強勢追趕 #PerpDEX#TVL排行#以太坊#生態競爭
Crypto M - Crypto News
@CryptoM · Post #64940 · 10.04.2026 г., 11:15
🚀 Perp DEX Market Sees Shift in Trading Volumes On April 10, data from DefiLlama indicates a decline in overall trading volumes in the on-chain Perp DEX market. According to BlockBeats, Aster's trading volume has surpassed that of EdgeX and Lighter, securing the second position. Meanwhile, the total holdings of the HIP-3 ecosystem projects TradeXYZ and Hyperliquid have seen a slight increase. The current rankings for major Perp DEX trading volumes are as follows: Hyperliquid has a 24-hour trading volume of approximately $8.23 billion, with open contract volumes around $7.46 billion. TradeXYZ records a 24-hour trading volume of about $3.02 billion, with open contract volumes near $1.74 billion. Aster shows a 24-hour trading volume of roughly $2.07 billion, with open contract volumes around $1.91 billion. Lighter has a 24-hour trading volume of approximately $1.90 billion, with open contract volumes about $706 million. EdgeX reports a 24-hour trading volume of around $1.84 billion, with open contract volumes near $1.05 billion. Pacifica's 24-hour trading volume is about $422 million, with open contract volumes approximately $79.34 million. #PerpDEX#DeFi#TradingVolume#Crypto#Blockchain#Aster#EdgeX#Lighter#Hyperliquid#TradeXYZ#HIP3#Pacifica#ASTER
Crypto M - Crypto News
@CryptoM · Post #64611 · 09.04.2026 г., 10:45
🚀 TradeXYZ Sees Decline After Surge in Trading Volume On April 9, according to BlockBeats, data from DefiLlama indicates that the trading volume of the HIP-3 ecosystem project TradeXYZ, which doubled the previous day, has now decreased. Hyperliquid's overall trading volume has also fallen below $10 billion, with 45.7% of its volume originating from TradeXYZ's traditional market. EdgeX ranks second in trading volume. The current rankings for major Perp DEX trading volumes are as follows: Hyperliquid: 24-hour trading volume is approximately $9.54 billion, with open contract volume around $7.25 billion. TradeXYZ: 24-hour trading volume is about $4.36 billion, with open contract volume around $1.69 billion. EdgeX: 24-hour trading volume is approximately $2.30 billion, with open contract volume around $1.03 billion. Aster: 24-hour trading volume is about $1.92 billion, with open contract volume around $1.87 billion. Lighter: 24-hour trading volume is approximately $1.82 billion, with open contract volume around $688 million. Pacifica: 24-hour trading volume is about $471 million, with open contract volume around $77.24 million. #TradeXYZ#DefiLlama#Hyperliquid#PerpDEX#CryptoTrading#EdgeX#Aster#Lighter#Pacifica#TradingVolume#CryptoMarket