Python CLI Keeps Performing the Same Command? -

i'm trying create command line allow user perform various functions. example, if type "scriptrun" terminal, want run function .py file, , return terminal (->>). reason, if type "scriptrun", run properly, if hit "enter" again, cause command run again. i'm basing off turtle cli found. after enter help, want show list of topics once, , if keep hitting enter, show terminal, following happening!:

(terminal) help

documented commands (type ):

bye color goto left position reset scriptrun circle forward heading home playback record right undo

(terminal) [here hit enter, below can see it's calling function again!]

documented commands (type ):

bye color goto left position reset scriptrun circle forward heading home playback record right undo

(terminal)

below sample code trying figure out solution to:

import cmd, sys turtle import * orion_package import *  class turtleshell(cmd.cmd):     intro = 'welcome turtle shell.   type or ? list commands.\n'     prompt = '(terminal) '     file = none       # ----- basic turtle commands -----     def do_forward(self, arg):         'move turtle forward specified distance:  forward 10'         forward(*parse(arg))     def do_right(self, arg):         'turn turtle right given number of degrees:  right 20'         right(*parse(arg))     def do_left(self, arg):         'turn turtle left given number of degrees:  left 90'         left(*parse(arg))     def do_goto(self, arg):         'move turtle absolute position changing orientation.  goto 100 200'         goto(*parse(arg))     def do_home(self, arg):         'return turtle home postion:  home'         home()     def do_circle(self, arg):         'draw circle given radius options extent , steps:  circle 50'         circle(*parse(arg))     def do_position(self, arg):         'print current turle position:  position'         print('current position %d %d\n' % position())     def do_heading(self, arg):         'print current turle heading in degrees:  heading'         print('current heading %d\n' % (heading(),))     def do_color(self, arg):         'set color:  color blue'         color(arg.lower())     def do_undo(self, arg):         'undo (repeatedly) last turtle action(s):  undo'     def do_reset(self, arg):         'clear screen , return turtle center:  reset'         reset()     def do_bye(self, arg):         'stop recording, close turtle window, , exit:  bye'         print('thank using turtle')         self.close()         bye()         return true       # ----- record , playback -----     def do_record(self, arg):         'save future commands filename:  record rose.cmd'         self.file = open(arg, 'w')     def do_playback(self, arg):         'playback commands file:  playback rose.cmd'         self.close()         open(arg) f:             self.cmdqueue.extend(f.read().splitlines())     def precmd(self, line):         line = line.lower()         if self.file , 'playback' not in line:             print(line, file=self.file)         return line     def close(self):         if self.file:             self.file.close()             self.file = none      def do_scriptrun(self, arg):         'run script: scriptrun'         print("let's run thing!  :)")         scriptrun()   def parse(arg):     'convert series of 0 or more numbers argument tuple'     return tuple(map(int, arg.split()))   if __name__ == '__main__':     turtleshell().cmdloop() 

any or advice solution appreciated! thank you! :)

it seems best solution make own version of cmd such modify condition , here include project , import , way can have repeat (terminal): every time hit enter rather repeating last command!