Python字典和JSON有什么区别? [英] What's the difference between Python Dictionary and JSON?

问题描述

将大型嵌套的Python字典转换为JSON以在小型库中使用(即不在网络上使用)是否有好处?

我正在解析配置文件并存储不同的数据位，以供以后检索和输出.当前，所有信息都存储在嵌套字典中，列表中也有列表.并不是说这种方法一定存在问题，我只是想知道使用标准数据格式是否有益，而且嵌套的dict看起来很像JSON.

解决方案

这是苹果与桔子的比较:JSON是一种数据格式(字符串)，Python字典是一种数据结构(内存对象).

如果您需要在不同(甚至是非Python)进程之间交换数据，则可以使用JSON格式序列化您的Python字典.

字典的文本表示形式类似于(但不是)json格式:

>>> print(dict(zip('abc', range(3))))
{'a': 0, 'b': 1, 'c': 2}

对象的文本表示形式(字符串)不是对象本身(即使字符串对象及其文本表示形式也不同，例如，"\n"是单个换行符，但显然其文本表示形式是多个字符).

Is there any benefit to converting a large nested Python dictionary to JSON for using within a small library (ie. not over the web)?

I am parsing configuration files and storing different bits of data for retrieval and output later. Currently all the information is stored in a nested dict, with lists in there also. It's not that there's a problem with this method necessarily, I just wonder if it's beneficial to use a standard data format, and the nested dict looks an awful lot like JSON.

解决方案

It is apples vs. oranges comparison: JSON is a data format (a string), Python dictionary is a data structure (in-memory object).

If you need to exchange data between different (perhaps even non-Python) processes then you could use JSON format to serialize your Python dictionary.

The text representation of a dictionary looks like (but it is not) json format:

>>> print(dict(zip('abc', range(3))))
{'a': 0, 'b': 1, 'c': 2}

Text representation (a string) of an object is not the object itself (even string objects and their text representations are different things e.g., "\n" is a single newline character but obviously its text representation is several characters).

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