第一种:try except 抛出异常结束程序运行
def collatz(number): try: number = int(number) if number % 2 == 0: return number // 2 elif number % 2 == 1: return 3 * number + 1 except ValueError: return '类型错误' for i in range(1,7): num = input() print(collatz(num)) print('你已经输入了{0}次,还剩{1}次!'.format(i,7-i))
第二中:try except finally 抛出异常后继续执行
def collatz(number): try: number = int(number) if number % 2 == 0: return number // 2 elif number % 2 == 1: return 3 * number + 1 except ValueError: global re re = '类型错误' print(re) return '' finally: print('我是在抛出{0}异常后,继续运行的程序块!'.format(re)) for i in range(1,7): num = input() print(collatz(num)) print('你已经输入了{0}次,还剩{1}次!'.format(i,7-i))其中except 后面的错误类型,可以根据具体要抛出错误类型需求修改,我们这里取了ValueError