The difference and connection between json.dumps() and json.loads()

json.dumps()和json.loads()

Detailed

• json.dumps() and json.loads() are json format processing functions (json data can be understood as strings).
  • The json.dumps() function is to encode a list of python data types in json format (it can be understood as the json.dumps() function is to convert the list into a string).
  • The json.loads() function converts data in json format into a dictionary (it can be understood as the json.loads() function converts a string into a dictionary).
• json.dumps() and json.loads() are mainly used to read and write json data (or json files).

Code test

# 代码1
import json

# json.dumps()函数的使用，将字典转化为字符串
dict1 = {
    
    "age": "12"}
json_info = json.dumps(dict1)
print("dict1的类型："+str(type(dict1)))
print("通过json.dumps()函数处理：")
print("json_info的类型："+str(type(json_info)))

# 输出
# dict1的类型：<class 'dict'>
# 通过json.dumps()函数处理：
# json_info的类型：<class 'str'>

# 代码2
import json

# json.loads函数的使用，将字符串转化为字典
json_info = '{"age": "12"}'
dict1 = json.loads(json_info)
print("json_info的类型："+str(type(json_info)))
print("通过json.dumps()函数处理：")
print("dict1的类型："+str(type(dict1)))

# 输出
# json_info的类型：<class 'str'>
# 通过json.loads()函数处理：
# dict1的类型：<class 'dict'>

# 代码3
import json

# json.dump()函数的使用，将json信息写进文件
json_info = "{'age': '12'}"
file = open('1.json','w',encoding='utf-8')
json.dump(json_info,file)

# 输出
# "{'age': '12'}"

# 代码4
import json

# json.load()函数的使用，将读取json信息
file = open('1.json','r',encoding='utf-8')
info = json.load(file)
print(info)

# 输出
# {'age': '12'}