Incorrect Decimal-Float behaviour in comparison tests

[Fredrik Lundh]

Tim Hochberg wrote:

> It's not a bug, but it is a misfeature. In 3.0, I'd love to see
> nonsensical comparisons raise TypeError, but still keep the ability to
> sort lists of heterogeneous objects. One approach would be keep cmp(x,y)
> permissive in its arguments while making __gt__ and friends strict.

    "Comparisons other than == and != between disparate types will
    raise an exception unless explicitly supported by the type"

    http://www.python.org/peps/pep-3000.html

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