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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.python
Subject: Re: How to waste computer memory?
Date: Sun, 20 Mar 2016 14:55:55 +0000
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Rustom Mody <rustompmody@gmail.com> writes:

> On Sunday, March 20, 2016 at 10:32:07 AM UTC+5:30, Steven D'Aprano wrote:
<snip>
>> Unicode (the character set part of it) is a set of abstract 23-bit numbers,
>
> 23? Or 21?

It's 21.  The reason being (or at least part of the reason being) that
21 bits can be UTF-8 encoded in 4 bytes: 11110xxx 10xxxxxx 10xxxxxx
10xxxxxx (3 + 3*6).

<snip>
-- 
Ben.