#15269: document dircmp.left and right, and add tests for them.
Patch by Chris Jerdonek.
diff --git a/Doc/library/filecmp.rst b/Doc/library/filecmp.rst
index f84cfa9..de20fb1 100644
--- a/Doc/library/filecmp.rst
+++ b/Doc/library/filecmp.rst
@@ -106,6 +106,16 @@
to compute are used.
+ .. attribute:: left
+
+ The directory *a*.
+
+
+ .. attribute:: right
+
+ The directory *b*.
+
+
.. attribute:: left_list
Files and subdirectories in *a*, filtered by *hide* and *ignore*.
@@ -169,3 +179,18 @@
A dictionary mapping names in :attr:`common_dirs` to :class:`dircmp`
objects.
+
+Here is a simplified example of using the ``subdirs`` attribute to search
+recursively through two directories to show common different files::
+
+ >>> from filecmp import dircmp
+ >>> def print_diff_files(dcmp):
+ ... for name in dcmp.diff_files:
+ ... print("diff_file %s found in %s and %s" % (name, dcmp.left,
+ ... dcmp.right))
+ ... for sub_dcmp in dcmp.subdirs.values():
+ ... print_diff_files(sub_dcmp)
+ ...
+ >>> dcmp = dircmp('dir1', 'dir2')
+ >>> print_diff_files(dcmp)
+