can't print the exception cause/context in Python3.0?

[Gabriel Genellina]

En Sat, 07 Mar 2009 21:18:22 -0200, BigHand <heweiwei at gmail.com> escribió:
> On 3月7日, 下午11时21分, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>  
> wrote:
>> En Sat, 07 Mar 2009 11:46:08 -0200, BigHand <hewei... at gmail.com>  
>> escribió:
>>
>> > I want the exception printted like this:
>> >   File "<pyshell#14>", line 2, in <module>  "a()"
>> >   File "<pyshell#6>", line 2, in a        "b()"
>> >   File "<pyshell#9>", line 2, in b       "return tuple()[0]"
>>
>> Put your code in a true module stored in a file, so the source lines  
>> can  
>> be retrieved.

>     I don't understand you.could you give me more details?


C:\TEMP>type tbtest.py
import sys
import traceback

def a(): b()

def b(): raise ValueError

print("\none\n")
try: a()
except:
   exc_typ, exc_val, exc_tb = sys.exc_info()
   traceback.print_tb(exc_tb)

print("\ntwo\n")
try: a()
except:
   exc_typ, exc_val, exc_tb = sys.exc_info()
traceback.print_tb(exc_tb)

print("\nthree\n")
a()

C:\TEMP>python30 tbtest.py

one

   File "tbtest.py", line 9, in <module>
     try: a()
   File "tbtest.py", line 4, in a
     def a(): b()
   File "tbtest.py", line 6, in b
     def b(): raise ValueError

two

   File "tbtest.py", line 15, in <module>
     try: a()
   File "tbtest.py", line 4, in a
     def a(): b()
   File "tbtest.py", line 6, in b
     def b(): raise ValueError

three

Traceback (most recent call last):
   File "tbtest.py", line 21, in <module>
     a()
   File "tbtest.py", line 4, in a
     def a(): b()
   File "tbtest.py", line 6, in b
     def b(): raise ValueError
ValueError

C:\TEMP>


-- 
Gabriel Genellina