http://hg.python.org/peps/rev/4d6c827944c4
changeset:   4920:4d6c827944c4
user:        Łukasz Langa <lukasz@langa.pl>
date:        Fri May 31 12:31:11 2013 +0200
summary:
  Explicitly state that the default implementation is registered for `object`

Thanks to Gustavo Carneiro for the suggestion.

files:
  pep-0443.txt |  10 +++++++---
  1 files changed, 7 insertions(+), 3 deletions(-)


diff --git a/pep-0443.txt b/pep-0443.txt
--- a/pep-0443.txt
+++ b/pep-0443.txt
@@ -134,13 +134,17 @@
 
 Where there is no registered implementation for a specific type, its
 method resolution order is used to find a more generic implementation.
+The original function decorated with ``@singledispatch`` is registered
+for the base ``object`` type, which means it is used if no better
+implementation is found.
+
 To check which implementation will the generic function choose for
 a given type, use the ``dispatch()`` attribute::
 
   >>> fun.dispatch(float)
   <function fun_num at 0x104319058>
-  >>> fun.dispatch(dict)
-  <function fun at 0x103fe4788>
+  >>> fun.dispatch(dict)    # note: default implementation
+  <function fun at 0x103fe0000>
 
 To access all registered implementations, use the read-only ``registry``
 attribute::
@@ -152,7 +156,7 @@
   >>> fun.registry[float]
   <function fun_num at 0x1035a2840>
   >>> fun.registry[object]
-  <function fun at 0x103170788>
+  <function fun at 0x103fe0000>
 
 The proposed API is intentionally limited and opinionated, as to ensure
 it is easy to explain and use, as well as to maintain consistency with

-- 
Repository URL: http://hg.python.org/peps