Minor problems with python

[EAS]

Whenever I open a python program using a normal console window, it says:
'import site' failed; use -v for traceback
What does this mean and how can I get rid of it?

Also, I have this one program that won't stay open at all; when I into IDLE
and run it there to see what the problem is, it just says:
>>> =========================== RESTART  ============================
>>>
then it starts the program. How do I fix this? Here's the code for it if
needed:

###############################################################
# Python Command Prompt - by Gecko_LoL, 6/5/2004. Version 1.0 #
###############################################################

from os import chdir, startfile, getcwd, listdir, \
remove, rmdir, mkdir, rename, system

command = ""
error = ".error."
print ("\tPython Command Prompt\n")

while command != "q":
    try:
        command = raw_input(">>> ")
        if command.lower() == "cd":
           dir = raw_input("... ")
           chdir(dir)
       elif command.lower() == "st":
           file = raw_input("... ")
           startfile(file)
       elif command.lower() == "dir":
           dir = getcwd()
           print dir, "\n"
       elif command.lower() == "li":
           for item in listdir("."):
               print item
           print
       elif command.lower() == "linum":
           start = input("... ")
           end = input("... ")
           for item in listdir(".")[start:end]:
                print item
                print
       elif command.lower() == "del":
           file = raw_input("... ")
           remove(file)
       elif command.lower() == "rd":
           dir = raw_input("... ")
           rmdir(dir)
       elif command.lower() == "md":
           dir = raw_input("... ")
           mkdir(dir)
       elif command.lower() == "ren":
           old = raw_input("... ")
           new = raw_input("... ")
           rename(old, new)
       elif command.lower() == "com":
           com = raw_input("... ")
           system(com)
       else:
           if command == "q":
               break
           print error
           continue
   except:
       print error
       continue