how to get the current thing in this code

this is my code :

class a():
    def __init__(self):
        self.a="aaa"
        self.b='bbb'

aa=a()
x=['a','b','c']
for i in x:
    print aa.get(i)

it show error :

Traceback (most recent call last):
  File "a.py", line 10, in <module>
    print aa['a']
AttributeEr开发者_StackOverflow社区ror: a instance has no attribute '__getitem__'

what can i do ,

thanks

updated:

i want print 'aaa' and 'bbb'

Perhaps you are looking for getattr(aa, i) ?

You'll have to use the getattr function or define a __getitem__ method for class a (though to implement it, you'll probably end up using getattr).

It looks like the error message was generated by different code where you were trying aa[i] rather than aa.get(i), which means (besides that the sample isn't representative) defining a.__getattr__ won't work with the sample code, though it would work if you use aa[i] instead of aa.get(i).