以下為代碼：

 1 def cheese_and_crackers(cheese_count, boxes_of_crackers): #定義函數
 2     print "You have %d cheeses!" % cheese_count
 3     print "You have %d boxes of crackers!" % boxes_of_crackers
 4     print "Man that‘s enough for a party!"
 5     print "Get a blanket.\n"
 6 
 7 
 8 print "We can just give the function numbers directly:
 
"
 9 cheese_and_crackers(20, 30)
10 
11 print "OR, we can use variables from our script:" #通過變量執行
12 amount_of_cheese = 10
13 amount_of_crackers = 50
14 cheese_and_crackers(amount_of_cheese, amount_of_crackers)
15 
16 print "We can even do math inside too:" #通過math執行
17 cheese_and_crackers(10 + 20, 5 + 6)
 
18 
19 print "And we can combine the two, variables and math:" #通過變量+math執行
20 cheese_and_crackers(amount_of_cheese + 100, amount_of_crackers + 1000)

輸出結果：

獲取用戶輸入：

1 def cheese_and_crackers(cheese_count, boxes_of_crackers):
2     print "You have %d cheeses!" % cheese_count
3     print "You have %d boxes of crackers!\n
 
" % boxes_of_crackers
4 
5 num1 = raw_input("cheeses:")
6 num2 = raw_input("crackers:")
7 
8 cheese_and_crackers(num1, num2)

然而執行到用戶輸入後，報錯

查看問題發現，報錯由於變量的類型不正確，即%d和raw_input的問題，原因是raw_input() 將所有輸入作為字符串看待，返回的是字符串類型。可以有以下解決辦法：
1. 將%d換成%r或者%s
2. 將raw_input換成input，input() 返回所輸入的數字的類型（ int, float ）
3. 第8行加入int: cheese_and_crackers(int(num1), int(num2))

以下用方法2

1 def cheese_and_crackers(cheese_count, boxes_of_crackers):
2     print "You have %d cheeses!" % cheese_count
3     print "You have %d boxes of crackers!\n" % boxes_of_crackers
4 
5 num = "Please enter the number"
6 num1 = input(num + ", cheeses:")
7 num2 = input(num + ", crackers:")
8 
9 cheese_and_crackers(num1, num2)

順利輸出結果：

笨辦法19函數和變量