old.2.流程梳理（function之return代码）

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 import getpass
 4 a=getpass.getpass("Enter a number: ")
 5 b=getpass.getpass("Enter another number: ")
 6 def add_num(x,y):
 7   print(a)
 8   print(b)
 9   total=float(x)+float(y)
10   return total
11   print("This won‘t be printed")
12 print("The sum is: "+str(add_num(a,b)))
13 
14 def max_num(x,y):
15     if x>=y :
16        return(x)
17     else:
18        return(y)
19 print("The max is: "+str(max_num(a,b)))

./me/solo/function/return.py