How can I more easily suppress previous exceptions when I raise my own exception in response?

Question

Consider

try:
   import someProprietaryModule
except ImportError:
   raise ImportError(\'It appears that  is not installed...\')         


        

Answer 1

In Python 3.3 and later raise ... from None may be used in this situation.

try:
   import someProprietaryModule
except ImportError:
   raise ImportError('It appears that  is not installed...') from None

This has the desired results.