>>> class Test:
def __getattr__(self, attr):
print attr
def foo(x):
print x
>>> t = Test()
>>> print t
__str__
Traceback (most recent call last):
File "<pyshell#23>", line 1, in -toplevel-
print t
TypeError: 'NoneType' object is not callable
what i have to do? define __str__ explicitly?
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