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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Wed, 19 Dec 2012 14:31:42 -0700
Subject: Re: Py 3.3, unicode / upper()
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On Wed, Dec 19, 2012 at 2:18 PM,  <wxjmfauth@gmail.com> wrote:
> latin-1 (iso-8859-1) ? are you sure ?

Yes.

>>>> sys.getsizeof('a')
> 26
>>>> sys.getsizeof('ab')
> 27
>>>> sys.getsizeof('a=E9')
> 39

Compare to:

>>> sys.getsizeof('a\u0100')
42

The reason for the difference you posted is that pure ASCII strings
have a further optimization, which I glossed over and which is purely
a savings in overhead:

>>> sys.getsizeof('abcde') - sys.getsizeof('a')
4
>>> sys.getsizeof('=E1b=E7d=EA') - sys.getsizeof('=E1')
4