[Python-checkins] cpython: Issue #17176: Document that imp.NullImporter is no longer inserted

[brett.cannon]

http://hg.python.org/cpython/rev/8e390e4784b0
changeset:   82645:8e390e4784b0
user:        Brett Cannon <brett at python.org>
date:        Wed Mar 13 10:46:22 2013 -0700
summary:
  Issue #17176: Document that imp.NullImporter is no longer inserted
into sys.path_importer_cache.

files:
  Doc/library/imp.rst |  9 +++++----
  Doc/library/sys.rst |  9 ++++++---
  2 files changed, 11 insertions(+), 7 deletions(-)


diff --git a/Doc/library/imp.rst b/Doc/library/imp.rst
--- a/Doc/library/imp.rst
+++ b/Doc/library/imp.rst
@@ -326,16 +326,17 @@
    with an existing directory or empty string raises :exc:`ImportError`.
    Otherwise, a :class:`NullImporter` instance is returned.
 
-   Python adds instances of this type to ``sys.path_importer_cache`` for any path
-   entries that are not directories and are not handled by any other path hooks on
-   ``sys.path_hooks``.  Instances have only one method:
-
+   Instances have only one method:
 
    .. method:: NullImporter.find_module(fullname [, path])
 
       This method always returns ``None``, indicating that the requested module could
       not be found.
 
+   .. versionchanged:: 3.3
+      ``None`` is inserted into ``sys.path_importer_cache`` instead of an
+      instance of :class:`NullImporter`.
+
 
 .. _examples-imp:
 
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -785,12 +785,15 @@
     A dictionary acting as a cache for :term:`finder` objects. The keys are
     paths that have been passed to :data:`sys.path_hooks` and the values are
     the finders that are found. If a path is a valid file system path but no
-    explicit finder is found on :data:`sys.path_hooks` then ``None`` is
-    stored to represent the implicit default finder should be used. If the path
-    is not an existing path then :class:`imp.NullImporter` is set.
+    finder is found on :data:`sys.path_hooks` then ``None`` is
+    stored.
 
     Originally specified in :pep:`302`.
 
+    .. versionchanged:: 3.3
+       ``None`` is stored instead of :class:`imp.NullImporter` when no finder
+       is found.
+
 
 .. data:: platform
 

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