How does Python use json?

First of all, what does a json look like? You can refer to the reference material, which should look similar to the following:

{
    
    
    "name": "dabao",
    "id":123,
    "hobby": {
    
    
        "sport": "basketball",
        "book": "python study"
    }
}

Does the body look like a Python dictionary? Yes, it's a dictionary when you read it in python. The value of the dictionary can be completely determined by the user, it can be int, float, str or list.

The operation of reading json is as follows (note: json is to be read as text! This reveals the essence, json is essentially a formatted text file! It is often encoded by utf-8, not binary files. ):

import json
 
with open('路径','r', encoding='utf8') as fp:
    json_data = json.load(fp)
    print('这是文件中的json数据：',json_data)
    print('这是读取到文件数据的数据类型：', type(json_data))

(The code here may also be GB code?) The thing read in is a dictionary.

How to write it as a json file?

'''
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'''
import json
a = {
    
    
    "name": "dabao",
    "id":123,
    "hobby": {
    
    
        "sport": "basketball",
        "book": "python study"
    }
}
b = json.dumps(a)
with open('new_json.json', 'w') as fp:
    fp.write(b)

The effect is as follows:

First downgrade the dict to a string via json.dumps(). Then write the string to the json file. It's that simple.