A hello world that uses getopt

hello.py

#!/usr/bin/env python                                                           
   
import getopt                                                                   
import sys 
                                                                             
try:                                                                            
    opts, args = getopt.getopt(sys.argv[1:], "g:s:", ["given=", "surname="])    
except getopt.GetoptError as err:                                               
    print str(err) # will print something like "option -a not recognized"       
    sys.exit(2)                                                                 
given = surname = None                                                          
for opt, arg in opts:                                                           
    if opt in  ('-g', '--given'):                                               
        given = arg                                                             
    elif opt in ('-s', '--surname'):                                            
        surname = arg                                                           
if given is None or surname is None:                                            
    print "please supply both given name and surname"                           
    sys.exit(2)                                                                 
                                                                                
print "hello, " + given + ' ' + surname