dialog.py 文件源码

def keypress(self, size, key):
        if key == 'enter':
            # if you dont need a reference to the CustomEdit instance you can drop the 3rd argument
            self.on_finish(self)
            return
        elif key == 'esc':
            super(CustomEdit, self).set_edit_text('')
            self.on_finish(self)
            return
        return urwid.Edit.keypress(self, size, key)