I'm reading the source code for decimal.Decimal, and I see that the
arithmetic operations (__add__, __sub__, etc.) start with code like this:
if other is NotImplemented:
return other
I don't understand the purpose of this. I presume that it is *not* for
the use-case of:
d = Decimal('123.456')
result = d + NotImplemented
which not only doesn't make sense to me, but when I try it, it raises
TypeError. So I find myself confused why the arithmetic methods do this.
--
Steven
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