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: #hydropower
@interesting_planet_facts · Post #764 · 17.09.2025 г., 00:22
🌎 China’s Three Gorges Dam is the world’s largest hydroelectric power station. Completed in 2012, it spans the Yangtze River and displaced over 1.3 million people. The reservoir stretches about 600 kilometers, flooding numerous cities and archaeological sites. ✨ #engineering⚡#environment⚡#hydropower 👉subscribe Interesting Planet
@CryptoM · Post #65118 · 11.04.2026 г., 04:35
🚀 Bhutan's Bitcoin Mining Activities May Have Slowed Amid Economic Pressures Bhutan may have halted or reduced its Bitcoin mining operations after selling 70% of its Bitcoin holdings. According to Foresight News, this move contrasts with other major institutions and sovereign nations that are increasing their cryptocurrency and gold reserves. Bhutan's hydropower is reportedly being redirected to supply electricity to neighboring India rather than being used for Bitcoin mining. Economic pressures, along with declining Bitcoin prices, increased network difficulty, and halving pressures, are squeezing mining profitability. As of now, Druk Holding and Investments, the sovereign wealth fund managing Bhutan's Bitcoin assets, has not publicly commented on any asset transfers or the status of its mining operations. #Bhutan#Bitcoin#Cryptocurrency#BitcoinMining#Hydropower#EconomicPressure#SovereignWealthFund#MiningProfitability#India#DigitalAssets
@venturevillagewall · Post #3817 · 08.01.2025 г., 04:00
Roam Team Joins Coinbase, Shutting Down Roam, a blockchain search engine, will shut down its products to join Coinbase. Key executives, including CEO, CTO, and CPO, are also moving to Coinbase to boost its on-chain consumer division. Read more 📊 Notable Transactions: - 89,114,400 #XLM (valued at $38.6M) transferred between unknown wallets. Details 📈 Bithumb adds Korean Won trading pairs for DEEP token on Sui network. Details 🎮 Lotte Group gets largest grant from Arbitrum for its metaverse gaming platform Caliverse. Amount undisclosed. Read more 🌍 BIT Mining seals $14M deal with Ethiopia for a 51-MW facility and 18,000 mining machines, capitalizing on the country's low energy costs. Read more #Blockchain#Coinbase#XLM#Crypto#DEEP#Sui#Arbitrum#Lotte#Metaverse#BITMining#Ethiopia#Bitcoin#DEX#CLOB#Gaming#Hydropower#Finance#News#Update#VC