python json模块中dumps、dump、loads、load函数介绍

import json


data_str = '{"name": "奔奔","age": 18,"sex":"女"}'

# 将str类型的数据转换为dict
str_to_dict = json.loads(data_str,encoding='utf-8')

print("data_str的类型为:{}".format(type(data_str)))
print("str_to_dict的类型为:{}".format(type(str_to_dict)))

# 将dict类型的数据转换为str
dict_to_str = json.dumps(str_to_dict,ensure_ascii=False)
print("dict_to_str的类型为:{}".format(type(dict_to_str)))

# 将dict类型的数据转成str,并写入到json文件中
dict_data = [
    {"one_info":{"name": "奔奔","age": 18,"sex": "女"}},{"two_info":{"name": "张三","age": 20,"sex": "男"}}
]
with open("test_json.json",mode='w',encoding='utf-8') as fp:
    json.dump(dict_data,fp,ensure_ascii=False,indent=2)

# 从json文件中读取数据
with open("test_json.json",mode='r',encoding='utf-8') as fp:
    load_dict = json.load(fp)
    print("读取出的数据为:{}".format(load_dict))

data_str的类型为:<class 'str'>
str_to_dict的类型为:<class 'dict'>
dict_to_str的类型为:<class 'str'>
读取出的数据为:{'name': '奔奔','age': 18,'sex': '女'}

[
  {
    "one_info": {
      "name": "奔奔","age": 18,"sex": "女"
    }
  },{
    "two_info": {
      "name": "张三","age": 20,"sex": "男"
    }
  }
]