python异常处理

#coding:utf-8
__author__ = 'hdfs'
try:
    name=['9','7']
    name[3]
    1/0
except IndexError,e:
    print(e)
except Exception,e:
    print(e)
finally:
    print('End...>>>')

class MyException(Exception):
    '''
    自己的异常
    '''
    def __init__(self,err):
        print('ni ge cuowu'+err)
try:
    a=0
    if a==0:
        '''手动抛出一个异常'''
        raise MyException(str(a))
except MyException,e:
    print(e)