diff options
Diffstat (limited to 'Doc/library/decimal.rst')
| -rw-r--r-- | Doc/library/decimal.rst | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst index c20188d..bc495ae 100644 --- a/Doc/library/decimal.rst +++ b/Doc/library/decimal.rst @@ -363,23 +363,17 @@ Decimal objects compared, sorted, and coerced to another type (such as :class:`float` or :class:`int`). - Decimal objects cannot generally be combined with floats in - arithmetic operations: an attempt to add a :class:`Decimal` to a - :class:`float`, for example, will raise a :exc:`TypeError`. - There's one exception to this rule: it's possible to use Python's - comparison operators to compare a :class:`float` instance ``x`` - with a :class:`Decimal` instance ``y``. Without this exception, - comparisons between :class:`Decimal` and :class:`float` instances - would follow the general rules for comparing objects of different - types described in the :ref:`expressions` section of the reference - manual, leading to confusing results. + Decimal objects cannot generally be combined with floats or + instances of :class:`fractions.Fraction` in arithmetic operations: + an attempt to add a :class:`Decimal` to a :class:`float`, for + example, will raise a :exc:`TypeError`. However, it is possible to + use Python's comparison operators to compare a :class:`Decimal` + instance ``x`` with another number ``y``. This avoids confusing results + when doing equality comparisons between numbers of different types. .. versionchanged:: 3.2 - A comparison between a :class:`float` instance ``x`` and a - :class:`Decimal` instance ``y`` now returns a result based on - the values of ``x`` and ``y``. In earlier versions ``x < y`` - returned the same (arbitrary) result for any :class:`Decimal` - instance ``x`` and any :class:`float` instance ``y``. + Mixed-type comparisons between :class:`Decimal` instances and + other numeric types are now fully supported. In addition to the standard numeric properties, decimal floating point objects also have a number of specialized methods: |