Could you help me with this simple kwarg example in python?

Question

I'm testing to use kwargs and have a trouble. This is the python3 code :

class B:
    def __init__(self, **kwargs):
        print(kwargs['city'])

a = {'phone':'0101', 'city':'Daejeon'}
b = B(a)

But, there is an error like below :

    b = B(a)
TypeError: __init__() takes 1 positional argument but 2 were given

Is there something wrong in my code? I think that I just exactly follow the tutorial....

score 0 · Answer 1 · answered Dec 26 '15 at 00:11

0

Keyword arguments are not passed that way.

obj1 = B(phone='0101', city='Daejeon')
obj2 = B(**a)

answered Dec 26 '15 at 00:11

a = {'phone':'0101', 'city':'Daejeon'} b = B(**a) still valid right ? – Rockybilly Dec 26 '15 at 00:13
@Rockybilly: Yes. There is no requirement to assign it to `obj2`. – Ignacio Vazquez-Abrams Dec 26 '15 at 00:15

1 Answers1