json数据转换为字典时报错'json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes'

>>> import json
>>> test="{'data':'123'}"
>>> result=json.loads(test)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "d:\Anaconda3\lib\json\__init__.py", line 319, in loads
    return _default_decoder.decode(s)
  File "d:\Anaconda3\lib\json\decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "d:\Anaconda3\lib\json\decoder.py", line 355, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes:
 line 1 column 2 (char 1)

原因在于：字符串里用单引号来标识字符。

解决办法如下：将字符串里的单引号替换成双引号