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: #usergrowth
@venturevillagewall · Post #4090 · 07.02.2025 г., 13:00
Polymarket Thrives Amid Trader Growth Betting platform Polymarket defies expectations, expanding active traders by over 50% to 462,000 since November. However, open interest dropped significantly from $500M to $100M, and trading volume halved from a peak of $2.6B to $1.2B. For detailed insights, visit Forklog's news. #Polymarket#Betting#Trading#Crypto#Finance#MarketTrends#StakeholderEngagement#UserGrowth#Blockchain
@CryptoM · Post #64566 · 09.04.2026 г., 08:31
🚀 Go Inc. Dominates Japan's Taxi Hailing Market Go Inc. operates the leading taxi hailing application in Japan, boasting the highest number of users in the country. Bloomberg posted on X, highlighting the company's significant presence in the Japanese market. The app's popularity underscores Go Inc.'s influence in the transportation sector, as it continues to expand its user base and enhance its services. This development reflects the growing demand for convenient and efficient transportation solutions in urban areas across Japan. #GoInc#Japan#TaxiHailing#Transportation#UrbanMobility#Bloomberg#UserGrowth
@venturevillagewall · Post #3812 · 07.01.2025 г., 13:00
Investment Rounds Highlight New Innovations RoboForce secures $10M to create a Robotic Workforce for heavy tasks. JAN3 raises $5M for Bitcoin technology aimed at increasing access globally. Mocean Energy Ltd gets $539.99K to enhance ocean wave energy tech. CopyCat raises $500K for AI automation of browser tasks. Spintly secures $407.85K to streamline smart access control integration. Additionally, SettleTON emerges as a new DeFi solution on the TON ecosystem, boasting $250k TVL and 30k active users monthly. More details available in the blog. #AI#Crypto#VC#Robotics#Bitcoin#DeFi#FinTech#OceanEnergy#Automation#SmartAccess#Investment#Blockchain#Technology#Liquidity#NFT#EcoSystem#Efficiency#TechInnovation#UserGrowth#Funding