1、python調試的時候擷取異常資訊
1 import traceback
2
3 print '########################################################'
4 print "1/0 Exception Info"
5 print '---------------------------------------------------------'
6 try:
7 1/0
8 except Exception, e:
9 print 'str(Exception):\t', str(Exception)
10 print 'str(e):\t\t', str(e)
11 print 'repr(e):\t', repr(e)
12 print 'e.message:\t', e.message
13 print 'traceback.print_exc():'; traceback.print_exc()
14 print 'traceback.format_exc():\n%s' % traceback.format_exc()
15 print '########################################################'
16 print '\n########################################################'
17 print "i = int('a') Exception Info"
18 print '---------------------------------------------------------'
19 try:
20 i = int('a')
21 except Exception, e:
22 print 'str(Exception):\t', str(Exception)
23 print 'str(e):\t\t', str(e)
24 print 'repr(e):\t', repr(e)
25 print 'e.message:\t', e.message
26 print 'traceback.print_exc():'; traceback.print_exc()
27 print 'traceback.format_exc():\n%s' % traceback.format_exc()
28 print '########################################################' 異常資訊：
1 ########################################################
2 1/0 Exception Info
3 ---------------------------------------------------------
4 str(Exception): <type 'exceptions.Exception'>
5 str(e): integer division or modulo by zero
6 repr(e): ZeroDivisionError('integer division or modulo by zero',)
7 e.message: integer division or modulo by zero
8 traceback.print_exc():
9 Traceback (most recent call last):
10 File "tmp.py", line 7, in <module>
11 1/0
12 ZeroDivisionError: integer division or modulo by zero
13 traceback.format_exc():
14 Traceback (most recent call last):
15 File "tmp.py", line 7, in <module>
16 1/0
17 ZeroDivisionError: integer division or modulo by zero
18
19 ########################################################
20
21 ########################################################
22 i = int('a') Exception Info
23 ---------------------------------------------------------
24 str(Exception): <type 'exceptions.Exception'>
25 str(e): invalid literal for int() with base 10: 'a'
26 repr(e): ValueError("invalid literal for int() with base 10: 'a'",)
27 e.message: invalid literal for int() with base 10: 'a'
28 traceback.print_exc():
29 Traceback (most recent call last):
30 File "tmp.py", line 20, in <module>
31 i = int('a')
32 ValueError: invalid literal for int() with base 10: 'a'
33 traceback.format_exc():
34 Traceback (most recent call last):
35 File "tmp.py", line 20, in <module>
36 i = int('a')
37 ValueError: invalid literal for int() with base 10: 'a'
38
39 ######################################################## 3、說明：
1、str(e)
傳回字元串類型，隻給出異常資訊，不包括異常資訊的類型，如1/0的異常資訊
'integer division or modulo by zero'
2、repr(e)
給出較全的異常資訊，包括異常資訊的類型，如1/0的異常資訊
"ZeroDivisionError('integer division or modulo by zero',)"
3、e.message
獲得的資訊同str(e)
4、采用traceback子產品
需要導入traceback子產品，此時擷取的資訊最全，與python指令行運作程式出現錯誤資訊一緻。使用traceback.print_exc()列印異常資訊到标準錯誤，就像沒有擷取一樣，或者使用traceback.format_exc()将同樣的輸出擷取為字元串。你可以向這些函數傳遞各種各樣的參數來限制輸出，或者重新列印到像檔案類型的對象。