python 读写json

1. 将python dict 写入json文件
   • json.dump()

   • import json  dict = {'a':1213,'b':['ad',3,'23fs']}       with open("file_path", "w") as json_f:      json.dump(dict, json_f)
2. 读取json文件
   • json.load()

   • import json()  with open("file_path", "r") as json_f:      dict = json.load(json_f)
3. 将python字典转换成json字符串
   • json.dumps()

   • import json  dict = {'a':1213,'b':['ad',3,'23fs']}   dict_str = json.dumps(dict)
4. 将json字符串转换成python字典
   • json.loads()

   • import json  dict_str = '{'a':1213,'b':['ad',3,'23fs']}'   dict = json.loads(dict_str)