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Wed Oct 27 16:33:32 CEST 2010 · https://mail.python.org/pipermail/python-dev/2010-October/104947.html

Not cheap enough.  There is no reason why creating another memoryview shouldn't be as cheap as creating a string slice.

I'm investigating why.

K

-----Original Message-----
From: python-dev-bounces+kristjan=ccpgames.com at python.org [mailto:python-dev-bounces+kristjan=ccpgames.com at python.org] On Behalf Of Antoine Pitrou
Sent: Wednesday, October 27, 2010 20:15
To: python-dev at python.org
Subject: Re: [Python-Dev] new buffer in python2.7

On Wed, 27 Oct 2010 20:00:10 +0800

Kristján Valur Jónsson <kristjan at ccpgames.com<mailto:kristjan at ccpgames.com>> wrote:

> Calling getbuffer on a bytearray or a bytes object should be really

> cheap, so I still don't accept this as a matter of fact situation.

It *is* cheap. It's just that copying a short slice is dirt cheap as well.

Of course, it you manipulate 1 KB slices or longer, it's different.

Regards

Antoine.

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[Python-Dev] new buffer in python2.7