It's quite simple. If this usage example can helps you...
### parser
try:
opts, args = getopt.getopt(sys.argv[1:], "h, e, p:", ["help"])
mode = 'reply' # default mode
pwd = ' ' # default pass (blank)
for o, a in opts:
if o == '--help' or o == '-h':
print helper()
os._exit(0)
if o == '-h':
print helper()
os._exit(0)
if o == '-e':
mode = 'echo/reply'
if o == '-p':
pwd = a
if len(args) < 3 :
print " ERR: Too much few arguments.\n Type %s -h for help." \
%(sys.argv[0])
os._exit(0)
if len(args) > 3:
print \
" ERR: Too much arguments.\n Type -h and \
look example to send argumented commands."
os._exit(0)
except:
print " ERR: Invalid Option.\n Type %s -h for help." \
%(sys.argv[0])
os._exit(0)
### /parser
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