[Tutor] Astonishing timing result

[Kent Johnson]

On Tue, Jun 24, 2008 at 1:43 PM, Dick Moores <rdm at rcblue.com> wrote:
> Output:
> t1 is 0.000104, no function
> t2 is 5.87e-006, function explicit
> t3 is 0.000126, function imported
> t1/t2 is 17.8
> t1/t3 is 0.827
> t3/t2 is 21.5
>
> Now, I'd heard that code in a function runs faster than the same code not in
> a function, but even so I was surprised at the t1/t2 ratio of 17.8.
>
> The astonishing (to me, anyway) result was the t3/t2 ratio. I had no idea
> that importing from mycalc slowed a script down at all, let alone by a
> factor of 21!

Note that t1 and t3 are pretty close to each other. Perhaps you should
be suspicious of t2. What if __name__ != '__main__' ?

Kent