[Python-Dev] Proposal - KeyboardInterrupt should inherit directly from Exception

[Fred L. Drake, Jr.]

On 07 November 2001, Skip Montanaro said:
 > I have a simple proposal: Change the exception class hierarchy
 > slightly, so that exceptions you generally will want to re-raise don't
 > inherit from StandardError.  Currently, SystemExit, StopIteration and
 > Warning inherit directly from Exception.  I suggest that
 > KeyboardInterrupt should also inherit from Exception, and not
 > StandardError.

  Sounds reasonable to me.

Greg Ward writes:
 > Hmmm... does anyone else habitually write
 > 
 >   if __name__ == "__main__":
 >       try:
 >           main()
 >       except KeyboardInterrupt:
 >           sys.exit("interrupted")

  It must be you, Greg!  ;-)  The only thing I can think of that I do
similar to that is:

import errno

if __name__ == "__main__":
    # do setup stuff...
    ...
    # output result to file...
    try:
        write_result()  # or whatever it really is...
    except IOError, e:
        if e.errno != errno.EPIPE:
            raise


  -Fred

-- 
Fred L. Drake, Jr.  <fdrake at acm.org>
PythonLabs at Zope Corporation