ex18.py

#-*- coding=utf-8 -*-
#ex18.py

# this one is like your scripts with argv 
def print_two(*args): 
    print "args numbers:",len(args)
    arg1, arg2，arg3 = args 
    print "arg1: %r, arg2: %r， arg2: %r" % (arg1, arg2，arg3) 
 
# ok, that *args is actually pointless, we can just do this 
def print_two_again(arg1, arg2): 
    print "arg1: %r, arg2: %r" % (arg1, arg2) 
 
# this just takes one argument 
def print_one(arg1): 
    print "arg1: %r" % arg1 


def print_none(): 
    print "I got nothing'." 

print_two("Zed","Shaw"，"test3") 
print_two_again("Zed","Shaw") 
print_one("First!") 
print_none() 

运行结果：

运行结果