load json文件报错，这是为什么？编码不对吗

Question

---

TypeError Traceback (most recent call last)
in ()
----> 1 json.loads(jsonfile,"UTF-8")

/usr/lib/python2.7/json/init.pyc in loads(s, encoding, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
349 if parse_constant is not None:
350 kw['parse_constant'] = parse_constant
--> 351 return cls(encoding=encoding, **kw).decode(s)

/usr/lib/python2.7/json/decoder.pyc in decode(self, s, _w)
364
365 """
--> 366 obj, end = self.raw_decode(s, idx=_w(s, 0).end())
367 end = _w(s, end).end()
368 if end != len(s):

TypeError: expected string or buffer