[Python-Dev] 2.5a2 try/except slow-down: Convert to type?

[Fredrik Lundh]

Michael Hudson wrote:

> Could it just be that instantiating instances of new-style classes is
> slower than instantiating instances of old-style classes?  There's not
> anything in what you've posted to suggest that exceptions are involved
> directly.

python -mtimeit -s "class Exception(object): pass" "Exception()"
1000000 loops, best of 3: 0.284 usec per loop

python -mtimeit -s "class Exception: pass" "Exception()"
1000000 loops, best of 3: 0.388 usec per loop

python -mtimeit "Exception()"
1000000 loops, best of 3: 1.95 usec per loop

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