widgets.py 文件源码

def __init__(self, label, on_press=None, user_data=None, align='right'):
        super(TextButton, self).__init__(
            label, on_press=on_press, user_data=user_data)
        self._label.align = align
        cols = urwid.Columns([self._label])
        super(urwid.Button, self).__init__(cols)