calc.py 文件源码

def main(self):
        self.loop = urwid.MainLoop(self.view, self.palette, screen=Screen(),
            input_filter=self.input_filter)
        self.loop.run()

        # on exit write the formula and the result to the console
        expression, result = self.get_expression_result()
        print "Paste this expression into a new Column Calculator session to continue editing:"
        print expression
        print "Result:", result