笨办法学python3练习代码ex18.py

Posted 2020-12-17 lscv26

 1 #命名、变量、代码、函数
 2 #this one is like your scripts with argv
 3 def print_two(*args):
 4     arg1, arg2 = args                       #将参数解包
 5     print(f"arg1: {arg1}, arg2: {arg2}")
 6 ‘‘‘
 7 （*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
 8 ‘‘‘ 
 9  
10 #ok,that‘s *agrs is actually pointless（无意义的）,we can just do this
11 def print_two_again(arg1, arg2):
12     print(f"arg1: {arg1}, arg2: {arg2}")
13     
14 #this just takes one argument
15 def print_one(arg1):
16     print(f"arg1: {arg1}")
17     
18     
19 #this one takes no arguments
20 def print_none():
21     print("I got nothin‘.")
22     
23     
24 print_two("Zed","Shaw")     #不带引号会出错，但是数字可以不带引号
25 print_two_again("Zed","Shaw")
26 print_one("First!")
27 print_none()