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Showing content from https://mail.python.org/pipermail/python-dev/2004-December/050388.html below:

[Python-Dev] Re: Re: 2.4 news reaches interesting places

[Python-Dev] Re: Re: 2.4 news reaches interesting places [Python-Dev] Re: Re: 2.4 news reaches interesting placesFredrik Lundh fredrik at pythonware.com
Sun Dec 12 18:53:27 CET 2004
> . Multiple assignment is slower than individual assignment.  For
> example "x,y=a,b" is slower than "x=a; y=b".  However, multiple
> assignment is faster for variable swaps.  For example, "x,y=y,x" is
> faster than "t=x; x=y; y=t".

marginally faster in 2.4, a lot slower in earlier versions.  maybe you
should mark sections that rely on 2.4-specific optimizations, so that
people who use earlier versions don't end up slowing their programs
down...

</F> 



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