exceptions.py

# Python3
>>> try:
...    raise ValueError()                                                                                              
... except ValueError:                                                                                                 
...    raise IndexError()
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
ValueError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 4, in <module>
IndexError
>>> 

# Python2>
>> try:
...    raise ValueError()
... except ValueError:
...    raise IndexError()
... 
Traceback (most recent call last):
  File "<stdin>", line 4, in <module>
IndexError
>>>