Request method returns single quoted json string

[m0nst3r]

Hi there, it's excellent work.
I met a problem here:

>>> from jsonrpcclient.requests import Request
>>> Request.hello()
{'jsonrpc': '2.0', 'method': 'hello', 'id': 1}

The return is single quoted json string, which may cause problems here. How could I use double quote (")?
Any config should I add?

Looking forward.
Thank you.