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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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America 🇺🇸 News & Politics

@America · Post #10645 · 13.05.2026 г., 13:05

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⛽💸GAS PRICES HIT HIGHEST LEVEL OF THE YEAR AMID IRAN WAR 🔹 National average now exceeds four dollars fifty cents per gallon after fifty percent surge 📈 🔹 California tops six dollars per gallon — highest in the nation as supply tightens 💰 🔹 Six states including Alaska Hawaii Oregon near five dollar per gallon threshold 🗺️ 🔹 Airline fuel costs force Spirit Airlines shutdown and widespread fare increases ✈️ Americans paying the price for Middle East conflict — when will relief come? 😤⛽ #USNews#economy 🌍 This affects more people than you think 📲 🔥 Share this with someone who needs to know 📲 @america

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America 🇺🇸 News & Politics

@America · Post #10640 · 12.05.2026 г., 13:04

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⛽🇺🇸TRUMP PLEDGES FEDERAL GAS TAX SUSPENSION AS PRICES HIT 4-YEAR HIGH 🔹 National average reaches $4.52/gallon - up from $3.14 just one year ago 📊💸 🔹 18.4¢ federal tax suspension could provide immediate relief while Congress approves 🏛️✅ 🔹 Iran war drives oil surge as $500M weekly tax revenue faces temporary pause ⛽🚫 🔹 GOP lawmakers rush bills through House and Senate for quick implementation 📋⚡ 🔹 Big Oil companies bank $30M hourly in war windfall profits while families struggle 💰😡 "When gas goes down, we'll phase it back in" - Trump promises targeted relief! 🎯 Americans deserve affordable energy, not war profiteering! 🇺🇸💪 #USNews#economy @america

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America 🇺🇸 News & Politics

@America · Post #10609 · 06.05.2026 г., 13:06

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📊🇺🇸US JOBS MARKET HITS "STALL SPEED" — MARCH GAINS DISAPPOINT, UNEMPLOYMENT STUCK AT 4.3% 🔹 Alarming 12-month trend: Only two hundred sixty thousand total jobs added — averaging twenty-one thousand monthly 📉 🔹 Manufacturing sector DOWN seventy-one thousand jobs since April 2025 despite Trump tariff promises 🏭 🔹 Education gap explodes: 5.9% jobless rate for high school dropouts vs 2.8% for college graduates 🎓 🔹 Young workers brutalized: Ages 25-34 face 4.8% unemployment vs 35-44 demographic at just 3.2% rate 👥 Fed warns unemployment could peak at 4.5% — "brutal" job market ahead for 2026 college graduates! 💼😰 #USNews#economy @america

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