code: def make_dropdown_widget(cls, description='Description', options=['Label 1', 'Label 2'], value='Label 1',
                              file_path=None, layout=Layout(), handler=None):
          "Return a Dropdown widget with specified `handler`."
          dd = widgets.Dropdown(description=description, options=options, value=value, layout=layout)
          if file_path is not None: dd.file_path = file_path
          if handler is not None: dd.observe(handler, names=['value'])
          return df make_dropdown_widget(cls, description='Description', options=['Label 1', 'Label 2'], value='Label 1',
                              file_path=None, layout=Layout(), handler=None):
          "Return a Dropdown widget with specified `handler`."
          dd = widgets.Dropdown(description=description, options=options, value=value, layout=layout)
          if file_path is not None: dd.file_path = file_path
          if handler is not None: dd.observe(handler, names=['value'])
          return dd
docs: Return a Dropdown widget with specified `handler`.