笨办法学python3练习代码ex18.py

 #命名、变量、代码、函数

 #this one is like your scripts with argv

 def print_two(*args):

     arg1, arg2 = args                       #将参数解包

     print(f"arg1: {arg1}, arg2: {arg2}")

 '''

 （*args） 里面*的意思：告诉Python把所有的参数都接收进来，放到名叫args的列表中去

 '''

 #ok,that's *agrs is actually pointless（无意义的）,we can just do this

 def print_two_again(arg1, arg2):

     print(f"arg1: {arg1}, arg2: {arg2}")

 #this just takes one argument

 def print_one(arg1):

     print(f"arg1: {arg1}")

 #this one takes no arguments

 def print_none():

     print("I got nothin'.")

 print_two("Zed","Shaw")     #不带引号会出错，但是数字可以不带引号

 print_two_again("Zed","Shaw")

 print_one("First!")

 print_none()