$ python2.5 -m timeit -r 10 -n 1000000 -s 'class Foo(Exception): pass' 'try: raise Foo()' 'except: pass' 1000000 loops, best of 10: 2.49 usec per loop $ python2.5 -m timeit -r 10 -n 1000000 -s 'class Foo(Exception):' -s ' def __init__(self): pass' 'try: raise Foo()' 'except: pass' 1000000 loops, best of 10: 3.15 usec per loop $ python2.5 -m timeit -r 10 -n 1000000 -s 'e = Exception()' 'try: raise e' 'except: pass' 1000000 loops, best of 10: 2.03 usec per loop
We can get more than half of the benefit simply by using a default __init__ rather than a python one. If you need custom attributes but they're predefined you could subclass the exception and have them as class attributes. Given that, is there really a need to pre-create exceptions? -- Adam Olsen, aka Rhamphoryncus _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
