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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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Business Lessons™

@business_idea4 · Post #4733 · 27.01.2026 г., 17:26

Here are 5 key takeaways from the book "STRATEGIZE TO WIN" - 1. #Know your strengths and weaknesses. This is the foundation of any successful strategy. Once you know what you're good at and what you're not so good at, you can start to build a strategy that plays to your strengths and minimizes your weaknesses. 2. #Set clear goals. What do you want to achieve? What are your long-term and short-term goals? Once you know what you want to achieve, you can start to develop a strategy to get there. 3. #Understand your competition. Who are your competitors? What are their strengths and weaknesses? What are their goals? Once you understand your competition, you can start to develop a strategy that will give you an edge. 4. #Be flexible. The world is constantly changing, so your strategy needs to be flexible enough to adapt to change. Be prepared to adjust your strategy as needed. 5. #Execute your strategy. This is the most important step of all. Once you have a strategy, you need to execute it. This means taking action and making sure that your strategy is working. Here are some additional key takeaways from the book: A. #Strategy is not a one-time event. It is an ongoing process that needs to be reviewed and updated regularly. B. #Strategy is not about perfection. It is about progress. You will never have a perfect strategy, but you can always improve your strategy by learning from your mistakes and by making adjustments as needed. C. #Strategy is about execution. It is not enough to have a good strategy. You also need to be able to execute your strategy effectively. I hope these key takeaways help you on your journey to strategizing to win. 💠Join 🔺 Share @Business_Idea4💠

MONEY SECRETS

@businessideas101 · Post #1247 · 14.06.2025 г., 06:23

Here are 5 key takeaways from the book "STRATEGIZE TO WIN" - 1. #Know your strengths and weaknesses. This is the foundation of any successful strategy. Once you know what you're good at and what you're not so good at, you can start to build a strategy that plays to your strengths and minimizes your weaknesses. 2. #Set clear goals. What do you want to achieve? What are your long-term and short-term goals? Once you know what you want to achieve, you can start to develop a strategy to get there. 3. #Understand your competition. Who are your competitors? What are their strengths and weaknesses? What are their goals? Once you understand your competition, you can start to develop a strategy that will give you an edge. 4. #Be flexible. The world is constantly changing, so your strategy needs to be flexible enough to adapt to change. Be prepared to adjust your strategy as needed. 5. #Execute your strategy. This is the most important step of all. Once you have a strategy, you need to execute it. This means taking action and making sure that your strategy is working. Here are some additional key takeaways from the book: A. #Strategy is not a one-time event. It is an ongoing process that needs to be reviewed and updated regularly. B. #Strategy is not about perfection. It is about progress. You will never have a perfect strategy, but you can always improve your strategy by learning from your mistakes and by making adjustments as needed. C. #Strategy is about execution. It is not enough to have a good strategy. You also need to be able to execute your strategy effectively. I hope these key takeaways help you on your journey to strategizing to win. Thank you for reading 📖

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@BookLogSFW · Post #91115 · 18.05.2026 г., 06:03

书名:crash course for the new gre 4th editio - princeton review 文件:英文 · MOBI · 2MB · 4万字 · 0R 统计:308热度 | 5下载 | 1点赞 | 0收藏 评级:0分 (0人) 💬 质量:5分 (0人) 标签:#answer#question#Quantity#one#choices#two#number#choice#get#passage#re#time#word#like#questions#sentence#know#problem#GRE#first#find 上传:👤Swof #预览#SFW#收藏书籍 📜我喜欢的书籍[1本]