2.1 NameError 代码 print(kushal) Traceback (most recent call last): File "", line 1, in NameError: name 'kushal' is not defined 运行截图 ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1843556-20211209-1639057729581) 2.2 TypeError 代码 print(1 + "kushal") Traceback (most recent call last): File "", line 1, in TypeError: unsupported operand type(s) for +: 'int' and 'str' 运行截图 ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1843556-20211209-1639057774487) 2.3 处理异常代码 def get_number(): ... "Returns a float number" ... number = float(input("Enter a float number: ")) ... return number ... while True: ... try: ... print(get_number()) ... except ValueError: ... print("You entered a wrong value.") ... Enter a float number: 45.0 45.0 Enter a float number: 24,0 You entered a wrong value. Enter a float number: Traceback (most recent call last): File "", line 3, in File "", line 3, in get_number KeyboardInterrupt 运行截图 ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1843556-20211209-1639057834677) 2.4 抛出异常代码 raise ValueError("A value error happened.") Traceback (most recent call last): File "", line 1, in ValueError: A value error happened. 运行截图 ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1843556-20211209-1639057886461) 2.5 定义清理行为代码 try: ... raise KeyboardInterrupt ... finally: ... print('Goodbye, world!') ... Goodbye, world! KeyboardInterrupt Traceback (most recent call last): File "", line 2, in ? 运行截图 ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1843556-20211209-1639057928579)

“2021-程序设计基础I”实验报告