Python: how to implement __getattr__()?

Question

My class has a dict, for example:

class MyClass(object):
    def __init__(self):
        self.data = {\'a\': \'v1\', \'b\': \'v2\'}

Then I

Answer 1

class A(object):
  def __init__(self):
     self.data = {'a': 'v1', 'b': 'v2'}
  def __getattr__(self, attr):
     try:
       return self.data[attr]
     except:
       return "not found"


>>>a = A()
>>>print a.a
v1
>>>print a.c
not found