[Tutor] A command line

[Tor Stormwall]

Hi!

I'm trying make a little interpreter that will other run 
commands.

But why cant I do like this: 

import os
import sys

def commands():
    if sys.argv[0] == open:
        print "opening"
    elif sys.argv[0] == exit:
        sys.exit()
    else:
        print "not a valid command"

def interpreter(prompt='=> '):
    try:
        while 1:
            command = raw_input(prompt)
            try:
                #flag = os.system('echo Hej')
                if command:	
                    commands()	# calling "def commands()"
            except (IndexError, KeyError):
                print "'%s' not a valid command" % command
            else:
                pass 
    except EOFError: pass

interpreter()



Best Regards,
Tor Stormwall
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