Python第八周

一．    实验目的和要求

了解Pyhon中常见的异常

二．   实验环境

 python 3.10 64-bit

三．   实验过程

实例1

代码如下：

 1 def division():
 2     '''功能：分苹果'''
 3     print("\n==============分苹果了================\n")
 4     apple = int(input("请输入苹果的个数："))
 5     children = int(input("请输入来了几个小朋友："))
 6     result = apple // children
 7     remain = apple - result*children    #计算余下苹果
 8     if remain > 0:
 9         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
10     else:
11         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
12 
13 if __name__ == '__main__':
14     division()

运行结果：

实例2

代码如下：

 1 def division():
 2     '''功能：分苹果'''
 3     print("\n==============分苹果了================\n")
 4     apple = int(input("请输入苹果的个数："))
 5     children = int(input("请输入来了几个小朋友："))
 6     result = apple // children
 7     remain = apple - result*children    #计算余下苹果
 8     if remain > 0:
 9         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
10     else:
11         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
12 
13 if __name__ == '__main__':
14     try:
15         division()
16     except ZeroDivisionError:
17         print("\n出错了~_~ —— 苹果不能被0个小朋友分！")

运行结果：

实例3

代码如下：

 1 def division():
 2     '''功能：分苹果'''
 3     print("\n==============分苹果了================\n")
 4     apple = int(input("请输入苹果的个数："))
 5     children = int(input("请输入来了几个小朋友："))
 6     if apple < children:
 7         raise ValueError("苹果太少了，不够分...")    #抛出异常(reason)
 8     result = apple // children
 9     remain = apple - result*children    #计算余下苹果
10     if remain > 0:
11         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
12     else:
13         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
14 
15 if __name__ == '__main__':
16     try:
17         division()
18     except ZeroDivisionError:
19         print("\n出错了~_~ —— 苹果不能被0个小朋友分！")
20     except ValueError as e:
21         print("\n出错了 ~_~ ——", e)

运行结果：

实例4

代码如下：

 1 def division():
 2     '''功能：分苹果'''
 3     print("\n==============分苹果了================\n")
 4     apple = int(input("请输入苹果的个数："))
 5     children = int(input("请输入来了几个小朋友："))
 6     assert apple >= children, "苹果不够分"   #应用断言调试
 7     result = apple // children
 8     remain = apple - result*children    #计算余下苹果
 9     if remain > 0:
10         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
11     else:
12         print(apple, "个苹果，平均分给", children, "个小朋友，每人分", result, "个。")
13 
14 if __name__ == '__main__':
15     division()

运行结果：