python的异常Exception
Python 的异常处理机制try:
raise Exception("a", "b")
except Exception,e:
print e
finally:
print "final"
('a', 'b')('a', 'b')
final
同样可以处理多个异常筛选。
try:
raise EOFError("aa", "bb")
except RuntimeError, e:
print ": ", e
except EOFError, e:
print ": ", e
except Exception, e:
print ": ", e
finally:
print "final"
:('aa', 'bb')
final
除了异常参数，我们还可以用sys的一些方法来获取异常信息。
import sys
try:
raise RuntimeError("the runtime error raised")
except:
print sys.exc_info()
(<type 'exceptions.RuntimeError'>, RuntimeError('the runtime error raised',), <traceback object at 0x00DC5CB0>)
缺省情况下，异常类都继承自 Exception。
>>>>>> class MyException(Exception):
pass
>>>>>> try:
raise MyException("My Exception raised!")
except:
print sys.exc_info()
(<class '__main__.MyException'>, MyException('My Exception raised!',), <traceback object at 0x00DC58F0>)
>>>>>>
页:
[1]