[issue21873] Tuple comparisons with NaNs are broken

[Mak Nazečić-Andrlon]

Mak Nazečić-Andrlon added the comment:

It's not about equality.

    >>> class A: pass
    ... 
    >>> (float("nan"), A()) < (float("nan"), A())
    False

That < comparison should throw a TypeError, since NaN < NaN is False, in the same way that 0 < 0 is False here:

>>> (0, A()) < (0, A())
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unorderable types: A() < A()

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21873>
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