标签：size 字符串 man and digg track 图片 定义 log
以下为代码：
1 def cheese_and_crackers(cheese_count, boxes_of_crackers): #定义函数 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:" #通过变量执行 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:" #通过math执行 17 cheese_and_crackers(10 + 20, 5 + 6) 18 19 print "And we can combine the two, variables and math:" #通过变量+math执行 20 cheese_and_crackers(amount_of_cheese + 100, amount_of_crackers + 1000)
输出结果：
获取用户输入：
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)
然而执行到用户输入后，报错
查看问题发现，报错由于变量的类型不正确，即%d和raw_input的问题，原因是raw_input() 将所有输入作为字符串看待，返回的是字符串类型。可以有以下解决办法：
1. 将%d换成%r或者%s
2. 将raw_input换成input，input() 返回所输入的数字的类型（ 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)
顺利输出结果：
标签：size 字符串 man and digg track 图片 定义 log
原文地址：http://www.cnblogs.com/p36606jp/p/7648246.html
