python3.5中

　　無法反序列化bytes數據必須decode成str才可以

>>> import json
>>> a = b‘{"username": "xxx"}‘
>>> c = json.loads(a)

‘‘‘
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/__init__.py", line 312, in loads
    s.__class__.__name__))
TypeError: the JSON object must be str, not ‘bytes‘

‘‘‘

　　3.5解決辦法:

>>> a = b‘123‘
>>> c = json.loads(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/json/__init__.py", line 312, in loads
    s.__class__.__name__))
TypeError: the JSON object must be str, not ‘bytes‘
>>> c = json.loads(a.decode(‘utf-8‘))
>>> c
123

python3.6中

　　無論bytes類型或者str類型都可以反序列化

>>> import json
>>> a = b‘{"username": "xxx"}‘
>>> c = json.loads(a)
>>> g = b‘{"username": "xxx"}‘
>>> h = json.loads(g.decode("utf-8"))

python3.5和python3.6關於json模塊的區別