From: Raymond Hettinger <python@rcn.com>
Date: Thu, 14 Feb 2008 01:08:02 +0000 (+0000)
Subject: Update notes on Decimal.
X-Git-Tag: v2.6a1~178
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ddb164a6512947ecce6923aac95488c40173041e;p=python

Update notes on Decimal.
---

diff --git a/Lib/numbers.py b/Lib/numbers.py
index b8a5c36db9..b6de8acf0e 100644
--- a/Lib/numbers.py
+++ b/Lib/numbers.py
@@ -49,9 +49,11 @@ Inexact.register(float)
 # Inexact.register(decimal.Decimal)
 
 
-## Notes on Decimal and it how relates to the numeric tower
-## --------------------------------------------------------
-## Decimal is Real except that it does not support rich comparisons.
+## Notes on Decimal
+## ----------------
+## Decimal has all of the methods specified by the Real abc, but it should
+## not be registered as a Real because decimals do not interoperate with
+## binary floats.
 ##
 ## Decimal has some of the characteristics of Integrals.  It provides
 ## logical operations but not as operators.  The logical operations only apply
@@ -305,7 +307,6 @@ class Real(Complex):
         return +self
 
 Real.register(float)
-# Real.register(decimal.Decimal)
 
 
 class Rational(Real, Exact):