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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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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60783 · 16.05.2026 г., 14:43

#Vocabulary 🕸Dormant 🦦 (of an animal) having normal physical functions suspended or slowed down for a period of time; in or as if in a deep sleep 🫧 Ex:- During the winter months, the bears will often go dormant and hibernate. 🌨Basic Synonyms 🌓 asleep 🌓 slumbering 🌓 inactive 🌟Advanced Synonyms ✨ comatose ✨ supine ✨ lethargic ✨ torpid ✨ aestivating 🌔Antonyms 🍀 awake 🍀 wakeful

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60772 · 10.05.2026 г., 14:57

#Vocabulary 🎶Repertory2⃣ 🎼a collection, especially of music or information 🎻 Ex:- This year, the Boston Philharmonic has expanded its repertory to include compositions from Mexico. 🎸Basic Synonyms 🪉 collection

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60771 · 10.05.2026 г., 14:57

#Vocabulary 🎨Repertory1⃣ 🎭 the performance of various plays, operas, or ballets by a company at regular short intervals 🫟 Ex:- Martin was overjoyed when he learned his audition was good enough to get him accepted at the New York Repertory for Young Composers. ❄️Basic Synonyms 🫧 theater 🫧 troupe 🫧 school

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60762 · 06.05.2026 г., 20:12

#Vocabulary 📜 Screed 📝a long speech or piece of writing, typically one regarded as tedious ✍Example:- When they lost the match, the team coach launched into an almost incoherent screed on all the areas the team had to improve in. 📒Basic Synonyms 🖌 rant 📔Advanced Synonyms 🖍 harangue

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60761 · 06.05.2026 г., 20:12

#Vocabulary 🥢Palatable 🍽(of food or drink) pleasant to taste; has acceptable taste 🍴Example:- Tonight, a surprisingly palatable spread will be laid out on the table. Don't be shy — come. 🧉Basic Synonyms 🥤 tasty 🥤 eatable 🍹Advanced Synonyms 🧋 appetizing 🧋 edible 🧋 savoury 🧋 delectable 🧋 luscious 🧋 flavourful 🧃Antonyms 🫗 distasteful 🫗 unsavoury

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60672 · 26.03.2026 г., 20:48

#Vocabulary ❄️Turnover 🕸The amount of money taken in by a business in a particular period 🫧 Ex:- The company's annual turnover exceeded expectations.

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60617 · 04.02.2026 г., 18:45

#Vocabulary 🌺Diffident. ●Lacking or marked by a lack of self-confidence; shy and timid, distrustful of one's own powers. ●He was diffident about his own success. ●Because she was only a first-year student, she was diffident when offering a comment on the professor's lecture.

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English From Zero to Hero

@Learn_English_from_Zero_to_Hero · Post #60616 · 04.02.2026 г., 18:43

#Vocabulary 🌺Spurious /ˈspjʊəriəs/ 《adjective》 ●a spurious statement, argument etc is not based on facts or good thinking and is likely to be incorrect. ▪️He demolished the opposition’s spurious arguments.

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