Interesting list Validity (True/False)

[Steve Holden]

mensanator at aol.com wrote:
> On May 12, 11:02�pm, Steven D'Aprano
[ ... ]
> 
> But you can't trust a==d returning True to mean a and d are
> "equal". To say the comparison means the two objects are
> equal is misleading, in other words, wrong. It only takes one
> turd to spoil the whole punchbowl.
> 
Unfortunately that is the very *definition* of "equal".

>> gmpy.mpz(1) on the other hand, is both a numeric type and a custom class.
>> It is free to define equal any way that makes sense, and it treats itself
>> as a numeric type and therefore says that it is equal to 1, just like 1.0
>> and 1+0j are equal to 1.
> 
> They are equal in the mathematical sense, but not otherwise.
> And to think that makes no difference is to be naive.
> 
Perhaps so, but you are a long way from the original question now!

regards
  Steve
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