calc.py 文件源码

def input_filter(self, input, raw_input):
        if 'q' in input or 'Q' in input:
            raise urwid.ExitMainLoop()

        # handle other keystrokes
        for k in input:
            try:
                self.wrap_keypress(k)
                self.event = None
                self.view.footer = None
            except CalcEvent, e:
                # display any message
                self.event = e
                self.view.footer = e.widget()

        # remove all input from further processing by MainLoop
        return []