Add $Revision: $ tag.
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 9dc359f..d2c0d10 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -21,7 +21,7 @@
 
 __author__ = "Ka-Ping Yee <ping@lfw.org>"
 __date__ = "26 February 2001"
-__version__ = "$Revision $"
+__version__ = "$Revision$"
 __credits__ = """Tommy Burnette, the original creator of manpy.
 Paul Prescod, for all his work on onlinehelp.
 Richard Chamberlain, for the first implementation of textdoc.