`sys.last_type' is missing and thus, traceback.print_last() is not working.

$ python
Python 2.6.1 (r261:67515, Dec  7 2008, 18:56:39) 
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> import sys
>>> try: raise Exception('asdf')
... except: print sys.last_type
... 
Traceback (most recent call last):
  File "<stdin>", line 4, in <module>
AttributeError: 'module' object has no attribute 'last_type'

>>> import traceback
>>> try: raise Exception('asdf')
... except: traceback.print_last()
... 
Traceback (most recent call last):
  File "<stdin>", line 4, in <module>
AttributeError: 'module' object has no attribute 'last_type'