iohandler.py 文件源码

def pre_input(self, completefn):
        if self.raw_input:
            if HAVE_READLINE:
                import atexit
                self.old_completer = readline.get_completer()
                # Fix Bug #3129: Limit the history size to consume less memory
                readline.set_history_length(self.historysize)   
                readline.set_completer(completefn)
                readline.parse_and_bind(self.completekey+": complete")
                try:
                    readline.read_history_file()
                except IOError:
                    pass
                atexit.register(readline.write_history_file)
                self.havecolor = True
                if mswindows and self.enablecolor:
                    self.cwrite = readline.GetOutputFile().write_color
                else:
                    self.cwrite = self.stdout.write