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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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EKOLOG.UZ| ENG

@ekologuzenglish · Post #11057 · 04.01.2026 г., 01:01

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Meet the Tardigrade — the creature that can survive almost anything It’s smaller than a grain of sand, lives in moss, and has even survived in outer space 🚀 This is the tardigrade, also known as the water bear — one of the toughest creatures on Earth. 🔬 What makes it so extraordinary? — survives extreme cold, close to absolute zero ❄️ — tolerates temperatures above 100 °C for short periods 🔥 — resists intense radiation — can live for years without water 💤 When conditions become harsh, the tardigrade enters a sleep-like state. It dries out, curls into a tiny “barrel,” and nearly stops all life processes. Then… 💧 one drop of water — and it comes back to life! 🌍 Tardigrades live almost everywhere: in moss, lichens, soil, fresh and salt water — even in Antarctica. 🧬 Scientists study tardigrades to understand: how to protect human cells, how life survives in extreme environments, and whether life could exist beyond Earth. 👉 Tiny and almost invisible — yet unbelievably strong. A true champion of survival 💪 #tardigrade#waterbear#amazingnature#microworld#science#ecology☘️Read the latest environmental news on the @ekologuz page. Follow us and send your suggestions and wishes via @eklguz_bot Instagram | Facebook | Twitter | Sayt | Youtube.

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Google Facts™ [ ️@googlefactss🌎]

@googlefactss · Post #40869 · 28.03.2026 г., 15:03

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A single tree, called the Tree of 40 Fruits, holds the record for the most varieties of fruit on one tree. Created by Sam Van Aken, it has 40 different types of stone fruits. These include peaches, plums, apricots, almonds, and cherries. The tree was made using grafting, where branches from different fruit trees are attached to one rootstock. This project shows how diverse fruit can grow on a single tree. 🍑🌳🍒🍎🍏 [Read more] @googlefactss #TreeOf40Fruits#Grafting#SamVanAken#FruitVarieties#GuinnessWorldRecords#AmazingNature#SustainableFarming

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Google Facts™ [ ️@googlefactss🌎]

@googlefactss · Post #40860 · 25.03.2026 г., 23:01

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Hussam Saraf set a record for the most species grafted onto a single tree. His tree has 5 different species: plum, apricot, almond, peach, and cherry. The tree was made by grafting branches from these species onto one trunk. This represents diversity and peaceful coexistence, as the fruits symbolize how different cultures can live together. 🌳🍑🍒 [Read more] @googlefactss #Grafting#PeacefulCoexistence#HussamSaraf#FiveSpeciesTree#FruitDiversity#GuinnessWorldRecords#AmazingNature#SustainableFarming

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