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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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Journey to Fluency

@fluencyinenglish · Post #7231 · 11.07.2019 г., 15:44

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#vocabulary #collocations #ability @fluencyinenglish @fluencyinenglish @fluencyinenglish a‧bil‧i‧ty /əˈbɪləti/ noun (plural abilities) 1 [countable] the state of being able to do something ❇️ability to do something the ability to walk The health center serves all patients, regardless of their ability to pay. ❇️ [countable, uncountable] someone’s level of skill at doing something The test measures your mathematical ability. mixed ability classes ❇️of high/low etc ability students of average ability There are musicians of all abilities. ❇️somebody's abilities as something He showed his abilities as a leader @fluencyinenglish @fluencyinenglish @fluencyinenglish 🔹🔹Grammar Ability is followed by an infinitive with ‘to’, not by an -ing form. You say:I admire his ability to listen. ✗Don’t say: I admire his ability of listening. @fluencyinenglish @fluencyinenglish @fluencyinenglish 👉COLLOCATIONS high/low/average ability great/considerable ability remarkable/outstanding/exceptional ability mixed ability (=at different levels) uncanny ability (=an unusual ability that is difficult to explain) 🔹He has an uncanny ability for spotting investment opportunities. natural ability (also innate ability formal)(=an ability that you are born with) physical/athletic ability artistic/creative ability musical ability acting ability mental ability intellectual/academic ability verbal/linguistic ability (=language skills) The test is intended to measure the children's linguistic ability. mathematical ability proven ability (=that you have proved through your achievements) @fluencyinenglish @fluencyinenglish @fluencyinenglish 👉VERBS have the ability to do something (also possess the ability to do somethingformal) show/demonstrate the ability to do something lack the ability to do something @fluencyinenglish @fluencyinenglish @fluencyinenglish 👉PHRASES a level of ability/ability level a range of ability/ability range a test of ability/an ability test an ability group (=a group that students are taught in, based on their level of ability) @fluencyinenglish @fluencyinenglish @fluencyinenglish

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Journey to Fluency

@fluencyinenglish · Post #6333 · 14.08.2018 г., 09:27

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#vocabulary #collocations #ability @fluencyinenglish 💎Ability: skill/power to do sth شایستگی ، توانایی ، لیاقت ،صلاحیت ، قابلیت ، استطاعت 💎صفاتی که معمولا با ability می آیند. @fluencyinenglish Exceptional Extraordinary Great Outstanding Remarkable Uncanny Inherent Innate/natural ____________________________ VERB + ABILITY در ادامه ability را با افعالی که می توان به کار برد را مشاهده می کنید. @fluencyinenglish Have Demonstrate Show Acquire Develop Lack Lose Appreciate Recognize Examples: 🔵Both players demonstrated their ability to hit the ball hard. 🔵Fox's abilities were soon recognized. ____________________________ PHRASES @fluencyinenglish ⚪️a level of ability: There was a high level of ability among the school leavers. ⚪️a range of ability/abilities: I taught a wide range of abilities. @fluencyinenglish

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