args = [1,2,3,4] text = json.dumps(args) query = base64.b64encode(text) auth = hashlib.md5(query).hexdigest() print(auth)

这段代码在python2.7下面通过，但是python3.5会报错：
TypeError: 'str' does not support the buffer interface

更改为这样以后，python3可以通过了

args = [1,2,3,4] text = json.dumps(args) query = base64.b64encode(bytes(text, 'utf-8'), ) auth = hashlib.md5(query).hexdigest() print(auth)

但是python2又会报错：TypeError: str() takes at most 1 argument (2 given)

该怎样修改才能使代码在python2和python3都运行通过呢？