python——异常

 异常

 运行时异常:

 最终要执行的程序放在finally里

 多路捕获

 子类在前，父类在后

a=10;

b=input('请输入被除数：');

 if not b.isdigit():

     print('输入错误，请输入数字：')

 else:

     b=int(b);

     if b==0:

         print("被除数不能为0 ")

     else:

         c=a/b;

         print(c)

 

try:

    c=0;

    b = int(b);

    c = a / b;

    print(c);

except ZeroDivisionError as zero:

    print('输入错误...异常信息为：',zero)

except ValueError as v:

    print('转换数字出错 请输入数字：异常信息为:',v)

except Exception:

    print('发生错误！')

else:

    print('程序正常结束...')

finally:

    del a,b,c

    print('finally: 块儿 释放资源')

print('程序其他代码!')

 

 异常

 运行时异常:

 最终要执行的程序放在finally里

 多路捕获

 子类在前，父类在后

a=10;

b=input('请输入被除数：');

 if not b.isdigit():

     print('输入错误，请输入数字：')

 else:

     b=int(b);

     if b==0:

         print("被除数不能为0 ")

     else:

         c=a/b;

         print(c)

 

try:

    c=0;

    b = int(b);

    c = a / b;

    print(c);

except ZeroDivisionError as zero:

    print('输入错误...异常信息为：',zero)

except ValueError as v:

    print('转换数字出错 请输入数字：异常信息为:',v)

except Exception:

    print('发生错误！')

else:

    print('程序正常结束...')

finally:

    del a,b,c

    print('finally: 块儿 释放资源')

print('程序其他代码!')