Optimizing Inner Loop Copy

[Mark E. Fenner]

Michael Spencer wrote:

> Mark E. Fenner wrote:
> 
>> 
>> and the copy is taking the majority (42%) of my execution time.
>> So, I'd like to speed up my copy.  I had an explicit copy method that did
>> what was needed and returned a new object, but this was quite a bit
>> slower than using the standard lib copy.copy().
>> 
> How are you measuring? It seems to me that your Rule.copy method is a lot
> faster than copy.copy:
> 
>  >>> r=  Rule(range(100))
>  >>> shell.timefunc(r.copy)
> 'copy(...)  36458 iterations, 13.71usec per call'
>  >>> from copy import copy
>  >>> shell.timefunc(copy, r)
> 'copy(...)  4498 iterations, 111.17usec per call' 

<snip>

> Michael

Michael,

Thank you.  I misinterpreted something somewhere ... the program is indeed
faster using Rule.copy.  I need to look over the rest of my profiling data,
to see if I screwed up elsewhere as well.

So, how to optimize Rule.copy()?

Regards,
Mark