10、异常处理

>>> a=[0,1,2,3,4,5]
>>>try:
...  a[10]
... except IndexError:
...  print ‘index error~~~~‘
... 
index error~~~~

 1 #!/usr/bin/python
 2 import time
 3 dict={0:0,1:1,2:2,3:3,4:4,5:5}
 4 input=int(raw_input(‘Please input a number:‘))
 5 try:
 6         for num in range(input):
 7                 try:
 8                         print ‘number ‘,dict[num]
 9                         time.sleep(0.3)
10                 except KeyboardInterrupt:
11                         print ‘Do not stop me!‘
12 except KeyError:
13         print ‘%s not exist‘%num

#!/usr/bin/python
try:
        raise NameError
        raise IndexError
except IndexError:
        print ‘index error!!!‘
except NameError:
        print ‘name error!!!‘

#!/usr/bin/python
class myexcept(Exception):          -- 定义异常
        pass
try:                                -- 触发
        raise myexcept
except myexcept:                    -- 捕获
        print ‘My error!!!‘

#!/usr/bin/python
try:
        pass
        raise Indexerror 
except :
        print ‘My error!!!‘
else:
        print ‘No exception‘
finally:
        print ‘finally print~~~‘

#!/usr/bin/python
import sys
try:
        pass
        raise IndexError,"line 5,please check it"
except IndexError,data:
        print data