字典特定值的 Python 类型提示 [英] Python type hint for specific values of dictionary

问题描述

我是 mypy 的粉丝，我想在具有不同类型值的字典上添加一些类型提示.

I am a fan of mypy and I would like to add some type hints on a dictionary that has different type of values.

我的字典如下<代码>{'name':'John', 'age':136, 'hobbies':['Python', 'cooking', 'reading']}

目前我想到的打字是:Dict[str, Union[str, int, List[str]]

有什么办法可以指定name是一个字符串，age是一个整数，而hobbies是一个列表(为了更具体的通过 mypy) 进行类型检查?

Is there any way to specify that name is a string, age is an integer, and hobbies is a list (for further specific type checking by mypy)?

注意:此数据来自包含此类对象列表的外部源.我对它的控制有限，除了遍历元素并转换它们.

NOTE: This data is coming from an external source containing a list of such objects. I have a limited control over it, except looping through the elements and converting them.

谢谢

推荐答案

我认为这可能是 XY 问题.

我的建议是为此使用一个类，而不是一个字典.这正是它们的用途.

My suggestion would be to use a class for that, instead of a Dictionary. This is precisely what they are made for.

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