Actually, the previous batch's comment should have been different;
*this* set of patches is Ka-Ping's final sweep:

The attached patches update the standard library so that all modules
have docstrings beginning with one-line summaries.

A new docstring was added to formatter.  The docstring for os.py
was updated to mention nt, os2, ce in addition to posix, dos, mac.
diff --git a/Lib/dircache.py b/Lib/dircache.py
index b0a3665..a35e16d 100644
--- a/Lib/dircache.py
+++ b/Lib/dircache.py
@@ -1,6 +1,8 @@
-"""Return a sorted list of the files in a directory, using a cache
-to avoid reading the directory more often than necessary.
-Also contains a subroutine to append slashes to directories."""
+"""Read and cache directory listings.
+
+The listdir() routine returns a sorted list of the files in a directory,
+using a cache to avoid reading the directory more often than necessary.
+The annotate() routine appends slashes to directories."""
 
 import os