How can I more easily suppress previous exceptions when I raise my own exception in response?
In Python 3.3 and later raise ... from None may be used in this situation.
try: import someProprietaryModuleexcept ImportError: raise ImportError('It appears that <someProprietaryModule> is not installed...') from NoneThis has the desired results.
This can be done like this in Python 2.7 and Python 3:
try: import someProprietaryModuleexcept ImportError as e: raised_error = eif isinstance(raised_error, ImportError): raise ImportError('It appears that <someProprietaryModule> is not installed...')
You can try logging module as well
import loggingtry: import someProprietaryModule except Exception as e: if hasattr(e, 'message'): logging.warning('python2') logging.error(e.message) else: logging.warning('python3') logging.error('It appears that <someProprietaryModule> is not installed...')gives
WARNING:root:python3ERROR:root:It appears that <someProprietaryModule> is not installed...[Program finished]