Python 2.5.4, Windows MSI installer, WinXP SP2, 32 bit:

Try the following code: (test script attached)

import traceback

try:
    someundefinedsymbol
except:
    traceback.print_last()

It will raise the following exception:

Traceback (most recent call last):
  File "bug.py", line 6, in <module>
    traceback.print_last()
  File "D:\Python25\lib\traceback.py", line 246, in print_last
    print_exception(sys.last_type, sys.last_value, sys.last_traceback,
AttributeError: 'module' object has no attribute 'last_type'

From the manual of the sys module:

"""
last_type 
last_value
last_traceback

These three variables are not always defined; they are set when an
exception is not handled and the interpreter prints an error message and
a stack traceback.
"""

So the AttributeError is normal in this case.

Changed the bug type to "behavior", since a more meaningful error
message than AttributeError would be very useful in this case.

Thanks.

In 2.7/3.1 this message is a ValueError saying "no last traceback".