@Learn_English_from_Zero_to_Hero · Post #60680 · 31.03.2026 г., 18:01
#Expressions
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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
Пребарај: #expressions
@Learn_English_from_Zero_to_Hero · Post #60680 · 31.03.2026 г., 18:01
#Expressions
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@Learn_English_from_Zero_to_Hero · Post #60602 · 26.01.2026 г., 16:56
#Expressions 💥Throw sb off 'course : 🔅if sb/sth is thrown off course, they are forced away from the direction they should be travelling in: ▪️ The plane was thrown off course. 2🔅to force sb to change the direction in which their ideas or actions are moving: ▪️ The government was thrown off course by economic problems.
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@Learn_English_from_Zero_to_Hero · Post #60131 · 23.08.2025 г., 18:19
#Expressions 💥Fly the coop. ▪️ (idiomatic) Leave or escape. 💥Once she heard the teacher's voice, she flew the coop .
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@Learn_English_from_Zero_to_Hero · Post #60129 · 23.08.2025 г., 18:14
#Expressions 💥Doom and gloom (uncountable) ▪️Something considered indicative of feelings of pessimism and despair. ▪️Antonyms: rainbows and unicorns, sunshine and rainbows. ⚡️The economic forecast contained the usual doom and gloom. ⚡️His sister was all doom and gloom after she lost the part.
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@Learn_English_from_Zero_to_Hero · Post #60128 · 23.08.2025 г., 18:12
#Expressions 💥No great shakes (uncountable) ▪️(idiomatic) Something unexceptional, not noteworthy or special. ▪️Synonyms: nothing to write home about ⚡️You're welcome to stay here, but this hut ain't no great shakes for such as you.
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@Learn_English_from_Zero_to_Hero · Post #59967 · 30.07.2025 г., 19:01
#Expressions 💥raring to do something (BrE) ● very eager to do something ⚜The children were raring to get outdoors.
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@Learn_English_from_Zero_to_Hero · Post #59966 · 30.07.2025 г., 19:01
#Expressions 💥on the brink ●(idiomatic) Very nearly; imminent; close. ⚜The old building seemed to be on the brink of collapse.
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@Learn_English_from_Zero_to_Hero · Post #59965 · 30.07.2025 г., 19:01
#Expressions 🔘on the level ▪️(idiomatic) Honest(ly), sincere(ly), straightforward(ly), fair(ly). 🔸He looks like a used car salesman, but he's really on thelevel, so you can trust him.
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@Learn_English_from_Zero_to_Hero · Post #59936 · 24.07.2025 г., 19:00
#Expressions 💥Finer things ●That which is considered of a high quality, expensive or tasteful. •Example: ⚡️I'm not materialistic, though I do enjoy the finer things in life.
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@Learn_English_from_Zero_to_Hero · Post #59935 · 24.07.2025 г., 19:00
#Expressions 💥Lose sleep over something •to worry about something •Example: ⚡️I know she's angry with me, but I'm not losing any sleep over it.
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@Learn_English_from_Zero_to_Hero · Post #59934 · 24.07.2025 г., 19:00
#Expressions 💥Take the plunge •to do something important or difficult, especially after thinking about it for a long time. ●Example: ⚡️We're finally going to take the plunge and buy a house.
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@Learn_English_from_Zero_to_Hero · Post #59909 · 23.07.2025 г., 06:16
#Expressions 💥Lend itself to sth FORMAL •to be suitable for a particular purpose •Example: ⚡️The novel's complex, imaginative style does not lend itself to translation.
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