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Изворен канал @pythonotes · Post #397 · 12 ное.

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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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Venture Village Wall 🦄

@venturevillagewall · Post #4324 · 06.03.2025 г., 19:00

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$28M Raised for DoubleZero as Blockchain News DoubleZero secures $28M in funding from Multicoin Capital and others to enhance its network protocol. Tensorplex Labs also gains investment from YZi Labs to develop decentralized AI tools. Texas Senate passes Bitcoin Reserve Bill SB21. TON Core implements "Accelerator" update, boosting throughput to 100,000 TPS. World Liberty Financial partners with Sui, causing SUI price surge. Medusa Ransomware targets over 40 victims in 2025, demanding hefty ransoms. Kraken to begin next round of FTX creditor repayments on May 30. Seismic raises $7M led by a16z for a privacy blockchain. More on Bitcoin, blockchain, and crypto developments can be found at the relevant links. #Funding#Blockchain#Bitcoin#TexasSenate#Crypto#AI#Tensorplex#Web3#DoubleZero#SUI#Seismic#Ransomware#Medusa#A16z#DeFi#DecentralizedAI#TON#Kraken#VentureCapital

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#funding#blockchain#bitcoin#texassenate#crypto#ai#tensorplex#web3#doublezero#sui#seismic#ransomware#medusa#a16z#defi#decentralizedai#ton#kraken#venturecapital
GitHub Trends

@githubtrending · Post #15100 · 29.08.2025 г., 11:30

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#typescript#commerce#e_commerce#javascript#marketplace#marketplace_solution#medusa#medusajs#medusajs_v2#multi_vendor#multi_vendor_ecommerce#multivendor_ecommerce#nodejs#open_source#shopping_cart Mercur is a free, open-source platform that lets you build and run your own multi-vendor marketplace with full control over your data, infrastructure, and customizations. It combines the ease of SaaS with the freedom of open source, so you avoid transaction fees and vendor lock-in. Built on modern MedusaJS technology, Mercur supports both B2C and B2B marketplaces, offering customizable storefronts, admin and vendor panels, and integrations like Stripe for payments. This means you can create a unique, scalable marketplace tailored to your business needs without relying on costly or restrictive platforms. It requires some technical skill but gives you complete ownership and flexibility. https://github.com/mercurjs/mercur

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#typescript#commerce#e_commerce#javascript#marketplace#marketplace_solution#medusa#medusajs#medusajs_v2#multi_vendor#multi_vendor_ecommerce#multivendor_ecommerce#nodejs#open_source#shopping_cart