import sys
import os
from ldtputils import*

full_path = os.environ['HOME'] + '/firefox'
if os.path.isdir(full_path):
    print "Directory exists"
    full_path = full_path + '/firefox'
    if os.path.isfile(full_path):
            print "File exists"
            full_path = full_path + ' -P spooky'
            print full_path
            launchapp(full_path,1)
    else:
        print "Oops! no file"
        sys.exit(0)
else:
    print "Directory doesn't exist"
    sys.exit(0)

Getting this error Casanova:

ashish@ash:~/minefield$ python launch_file_menu.py
Directory doesn't exist
Unhandled exception in thread started by
Error in sys.excepthook:

Original exception was: