X-Git-Url: https://wannabe.guru.org/gitweb/?a=blobdiff_plain;f=docs%2Fpyutils.files.rst;h=c1152d8e3ea17c8e9a9dbb803c3c34dfaa15ccd6;hb=b38920f24d1ac948958480c540bc4b8436186765;hp=6878963cc3051f9c066713d4b934e4c18a415cd2;hpb=1c60a8d9ae5a162f8d309b48f8a07ee6946f3e25;p=pyutils.git

diff --git a/docs/pyutils.files.rst b/docs/pyutils.files.rst
index 6878963..c1152d8 100644
--- a/docs/pyutils.files.rst
+++ b/docs/pyutils.files.rst
@@ -7,6 +7,15 @@ Submodules
 pyutils.files.directory\_filter module
 --------------------------------------
 
+This module contains two classes meant to help reduce unnecessary disk
+I/O operations:
+
+The first determines when the contents of a file held in memory are
+identical to the file copy already on disk.  The second is basically
+the same except for the caller need not indicate the name of the disk
+file because it will check the memory file's signature against a set
+of signatures of all files in a particular directory on disk.
+
 .. automodule:: pyutils.files.directory_filter
    :members:
    :undoc-members:
@@ -15,6 +24,11 @@ pyutils.files.directory\_filter module
 pyutils.files.file\_utils module
 --------------------------------
 
+This is a grab bag of file-related utilities.  It has code to, for example,
+read files transforming the text as its read, normalize pathnames, strip
+extensions, read and manipulate atimes/mtimes/ctimes, compute a signature
+based on a file's contents, traverse the file system recursively, etc...
+
 .. automodule:: pyutils.files.file_utils
    :members:
    :undoc-members:
@@ -23,6 +37,14 @@ pyutils.files.file\_utils module
 pyutils.files.lockfile module
 -----------------------------
 
+This is a lockfile implementation I created for use with cronjobs on
+my machine to prevent multiple copies of a job from running in
+parallel.  When one job is running this code keeps a file on disk to
+indicate a lock is held.  Other copies will fail to start if they
+detect this lock until the lock is released.  There are provisions in
+the code for timing out locks, cleaning up a lock when a signal is
+received, gracefully retrying lock acquisition on failure, etc...
+
 .. automodule:: pyutils.files.lockfile
    :members:
    :undoc-members:
@@ -31,6 +53,8 @@ pyutils.files.lockfile module
 Module contents
 ---------------
 
+This module contains utilities for dealing with files on disk.
+
 .. automodule:: pyutils.files
    :members:
    :undoc-members: