code: def make_button_widget(cls, label, file_path=None, handler=None, style=None, layout=Layout(width='auto')):
          "Return a Button widget with specified `handler`."
          btn = widgets.Button(description=label, layout=layout)
          if handler is not None: btn.on_click(handler)
          if style is not None: btn.button_style = style
          btn.file_path = file_path
          btn.flagged_for_delete = False
          return btf make_button_widget(cls, label, file_path=None, handler=None, style=None, layout=Layout(width='auto')):
          "Return a Button widget with specified `handler`."
          btn = widgets.Button(description=label, layout=layout)
          if handler is not None: btn.on_click(handler)
          if style is not None: btn.button_style = style
          btn.file_path = file_path
          btn.flagged_for_delete = False
          return btn
docs: Return a Button widget with specified `handler`.