These should all return False, or some of them should raise exceptions:

Python 2.6.2 (release26-maint, Apr 19 2009, 01:58:18)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import decimal
>>> decimal.Decimal('0') > 0
False
>>> decimal.Decimal('0') < 0
False
>>> decimal.Decimal('0') > 0.0
True
>>> decimal.Decimal('0') < 0.0
False
>>> 0.0 > decimal.Decimal('0')
False
>>> 0.0 < decimal.Decimal('0')
True
>>> 0.0 < decimal.Decimal('0.0')
True
>>> decimal.Decimal('0') > decimal.Decimal('0')
False