json和字典之间的转换

import json

#json字符串转换字典
data ='{"a":1,"b":2,"c":null}'
data_dict =json.loads(data)  #
print(data_dict) #{'a': 1, 'b': 2, 'c': None}

#字典转换json字符串
dict_data ={"a":1,"b":2,"c":None}
data_json =json.dumps(dict_data)
print(data_json)  #{"a": 1, "b": 2, "c": null}