Which is More Efficient?

[Ben Finney]

"Dustan" <DustanGroups at gmail.com> writes:

> I have a program that uses up a lot of CPU and want to make it is
> efficient as possible with what I have to work with it.

Profile your program and find the precise parts that are the
slowest. Attempting to optimise before that is a waste of your time.

> So which of the following would be more efficient, knowing that l is
> a list and size is a number?
> 
> l=l[:size]
> del l[size:]

Which one is more efficient in your program, when you profile its
performance?

    <URL:http://docs.python.org/lib/profile.html>

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Ben Finney