python异常信息获取

1、python调试的时候获取异常信息

 import traceback

 print '########################################################'
 print "1/0 Exception Info"
 print '---------------------------------------------------------'
 try:
     1/0
 except Exception, e:
     print 'str(Exception):\t', str(Exception)
     print 'str(e):\t\t', str(e)
     print 'repr(e):\t', repr(e)
     print 'e.message:\t', e.message
     print 'traceback.print_exc():'; traceback.print_exc()
     print 'traceback.format_exc():\n%s' % traceback.format_exc()
 print '########################################################'
 print '\n########################################################'
 print "i = int('a') Exception Info"
 print '---------------------------------------------------------'
 try:
     i = int('a')
 except Exception, e:
     print 'str(Exception):\t', str(Exception)
     print 'str(e):\t\t', str(e)
     print 'repr(e):\t', repr(e)
     print 'e.message:\t', e.message
     print 'traceback.print_exc():'; traceback.print_exc()
     print 'traceback.format_exc():\n%s' % traceback.format_exc()
 print '########################################################'

异常信息：

 ########################################################
 1/0 Exception Info
 ---------------------------------------------------------
 str(Exception):    <type 'exceptions.Exception'>
 str(e):        integer division or modulo by zero
 repr(e):    ZeroDivisionError('integer division or modulo by zero',)
 e.message:    integer division or modulo by zero
 traceback.print_exc():
 Traceback (most recent call last):
   File "tmp.py", line 7, in <module>
     1/0
 ZeroDivisionError: integer division or modulo by zero
 traceback.format_exc():
 Traceback (most recent call last):
   File "tmp.py", line 7, in <module>
     1/0
 ZeroDivisionError: integer division or modulo by zero

 ########################################################

 ########################################################
 i = int('a') Exception Info
 ---------------------------------------------------------
 str(Exception):    <type 'exceptions.Exception'>
 str(e):        invalid literal for int() with base 10: 'a'
 repr(e):    ValueError("invalid literal for int() with base 10: 'a'",)
 e.message:    invalid literal for int() with base 10: 'a'
 traceback.print_exc():
 Traceback (most recent call last):
   File "tmp.py", line 20, in <module>
     i = int('a')
 ValueError: invalid literal for int() with base 10: 'a'
 traceback.format_exc():
 Traceback (most recent call last):
   File "tmp.py", line 20, in <module>
     i = int('a')
 ValueError: invalid literal for int() with base 10: 'a'

 ########################################################

3、说明：

1、str(e)

返回字符串类型，只给出异常信息，不包括异常信息的类型，如1/0的异常信息

'integer division or modulo by zero'

2、repr(e)

给出较全的异常信息，包括异常信息的类型，如1/0的异常信息

"ZeroDivisionError('integer division or modulo by zero',)"

3、e.message

获得的信息同str(e)

4、采用traceback模块

　　需要导入traceback模块，此时获取的信息最全，与python命令行运行程序出现错误信息一致。使用traceback.print_exc()打印异常信息到标准错误，就像没有获取一样，或者使用traceback.format_exc()将同样的输出获取为字符串。你可以向这些函数传递各种各样的参数来限制输出，或者重新打印到像文件类型的对象。