code: def addExample(self,example):
          '''Appends one Example to examples
          '''
          if isinstance(example, Example):
              self.examples.append(example)
          else:
              raise (ExampleError,
                     'example Type should be Example, not %s' % type(example)
                     f addExample(self,example):
          '''Appends one Example to examples
          '''
          if isinstance(example, Example):
              self.examples.append(example)
          else:
              raise (ExampleError,
                     'example Type should be Example, not %s' % type(example)
                     )
docs: Appends one Example to examples