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Date: Sat, 24 Jan 2015 05:03:48 +1100
Subject: Re: Comparisons and sorting of a numeric class....
From: Chris Angelico <rosuav@gmail.com>
Cc: "python-list@python.org" <python-list@python.org>
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Xref: csiph.com comp.lang.python:84375

On Sat, Jan 24, 2015 at 4:45 AM, Rustom Mody <rustompmody@gmail.com> wrote:
> No disagreement with the 'hack'
> As for "no use case for equal but distinct tokens" - thats a strange
> view given this thread

Look at it this way: A classic enumeration has no use-case for
equal-but-distinct; this thread doesn't disagree with that, because
this thread is not about classic enumerations. In the same way,
integers don't have use-cases for equal-but-distinct either, but in
practice, you can distinguish between exact literals and the results
of computation:

rosuav@sikorsky:~$ cat unique_numbers.py
x = 100000
y = 100000
z = 99999+1
print(x is y, x is z, y is z)
rosuav@sikorsky:~$ python3 unique_numbers.py
True False False

This is still not good code, though. If you really need to distinguish
those, your code is majorly fragile.

ChrisA