求大神指点,keywords must be strings ?

练习json module的时候，出现keywords must be strings 错误，求大神指点一二！

1. 
   
2. import json
   
3. 
   
4. 
   
5. class Person(object):
   
6.     def __init__(self, name, age):
   
7.         self.name = name
   
8.         self.age = age
   
9. 
   
10.     def __repr__(self):
    
11.         return 'Person Object name : %s , age : %d' % (self.name, self.age)
    
12. 
    
13. 
    
14. def object2dict(obj):
    
15.     '''
    
16.     convert Person to dict
    
17.     '''
    
18.     d = {}
    
19.     d['__class__'] = obj.__class__.__name__
    
20.     d['__module__'] = obj.__module__
    
21.     d.update(obj.__dict__)
    
22.     return d
    
23. 
    
24. 
    
25. def dict2object(d):
    
26.     '''
    
27.     convert dict ot Person
    
28.     '''
    
29.     if '__class__' in d:
    
30.         class_name = d.pop('__class__')
    
31.         module_name = d.pop('__module__')
    
32.         module = __import__(module_name)
    
33.         class_ = getattr(module, class_name)
    
34.         args = dict((key.encode('ascii'), value) for key, value in d.items())  # get args
    
35.         print(args)
    
36.         inst = class_(**args)  # create new instance
    
37.     else:
    
38.         inst = d
    
39.     return inst
    
40. 
    
41. 
    
42. if __name__ == '__main__':
    
43.     p = Person('alison', 40)
    
44.     print(p)
    
45.     d = object2dict(p)
    
46.     print(d)
    
47.     o = dict2object(d)
    
48.     print(type(o), o)
    
49. 
    
50.     dump = json.dumps(p, default=object2dict)
    
51.     print(dump)
    
52.     load = json.loads(dump, object_hook=dict2object)
    
53.     print(load)
    

复制代码

报错：  

Traceback (most recent call last):
{'__class__': 'Person', '__module__': '__main__', 'name': 'alison', 'age': 40}
{b'name': 'alison', b'age': 40}
  File "G:/workspace/PycharmProjects/module/jsonDemo.py", line 52, in <module>
    o = dict2object(d)
  File "G:/workspace/PycharmProjects/module/jsonDemo.py", line 41, in dict2object
    inst = class_(**args)  # create new instance
TypeError: __init__() keywords must be strings

原来的逆向传参！！！