history.py 文件源码

def remove_item(self, index):
        # readline.remove_history_item() doesn't seem to work. Do it the
        # hard way.

        #try:
        #    readline.remove_history_item(i)
        #except ValueError:
        #    pass

        buf = []
        for i in range(1, self.total + 1):
            if i != index:
                buf += self.get_item(i)

        self.clear_history()
        for s in buf:
            readline.add_history(s)