python - Looping r.json , Limited -

i have loop request , process. repeats, after while it's dead

def getsize():             r = requests.get("http://domain.com/api/v1/getize")             loop in r.json():                 getsizeguide(loop['link'],loop['id'])  def getsizeguide(link,id):              //does               getsize()      file "c:\users\administrator\desktop\python\xxx\sizeguide2.py", line 150, in getsizeguide     getsize()   file "c:\users\administrator\desktop\python\xxx\sizeguide2.py", line 34, in getsize     loop in r.json():   file "c:\python34\lib\site-packages\requests\models.py", line 763, in json     return json.loads(self.text, **kwargs)   file "c:\python34\lib\json\__init__.py", line 318, in loads     return _default_decoder.decode(s)   file "c:\python34\lib\json\decoder.py", line 343, in decode     obj, end = self.raw_decode(s, idx=_w(s, 0).end())   file "c:\python34\lib\json\decoder.py", line 361, in raw_decode     raise valueerror(errmsg("expecting value", s, err.value)) none valueerror: expecting value: line 1 column 1 (char 0)