def METHOD_NAME(self):
    code = '''\
    for i in range(10):
        a = i + 1
    '''
    types = self._test(code)
    self.assertIn((None, (1, 0)), types)
    variables = types.pop((None, (1, 0)))
    self.assertFalse(types)
    self.assertEqual({'a': set(['int']), 'i': set(['int'])}, variables)