>>> url="http://weather.livedoor.com/forecast/webservice/json/v1"
>>> payload={"city_kurume":"400040"}
>>> weather_data=requests.get(url,params=payload).json()
Traceback (most recent call last):
  File "<pyshell#8>", line 1, in <module>
    weather_data=requests.get(url,params=payload).json()
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\models.py", line 897, in json
    return complexjson.loads(self.text, **kwargs)
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)