Update docs to reflect removal of Exact/Inexact
diff --git a/Doc/library/numbers.rst b/Doc/library/numbers.rst
index 7a5f105..3124121 100644
--- a/Doc/library/numbers.rst
+++ b/Doc/library/numbers.rst
@@ -8,9 +8,8 @@
The :mod:`numbers` module (:pep:`3141`) defines a hierarchy of numeric abstract
-base classes which progressively define more operations. These concepts also
-provide a way to distinguish exact from inexact types. None of the types defined
-in this module can be instantiated.
+base classes which progressively define more operations. None of the types
+defined in this module can be instantiated.
.. class:: Number
@@ -19,27 +18,6 @@
*x* is a number, without caring what kind, use ``isinstance(x, Number)``.
-Exact and inexact operations
-----------------------------
-
-.. class:: Exact
-
- Subclasses of this type have exact operations.
-
- As long as the result of a homogenous operation is of the same type, you can
- assume that it was computed exactly, and there are no round-off errors. Laws
- like commutativity and associativity hold.
-
-
-.. class:: Inexact
-
- Subclasses of this type have inexact operations.
-
- Given X, an instance of :class:`Inexact`, it is possible that ``(X + -X) + 3
- == 3``, but ``X + (-X + 3) == 0``. The exact form this error takes will vary
- by type, but it's generally unsafe to compare this type for equality.
-
-
The numeric tower
-----------------
@@ -79,7 +57,7 @@
.. class:: Rational
- Subtypes both :class:`Real` and :class:`Exact`, and adds
+ Subtypes :class:`Real` and adds
:attr:`Rational.numerator` and :attr:`Rational.denominator` properties, which
should be in lowest terms. With these, it provides a default for
:func:`float`.
@@ -239,4 +217,4 @@
__add__, __radd__ = _operator_fallbacks(_add, operator.add)
- # ...
\ No newline at end of file
+ # ...