Provide links to Python source in a handful of

cases where the source is a generally helpful
adjunct to the docs.

Doc/library/ast.rst

@@ -28,6 +28,11 @@ classes all inherit from :class:`ast.AST`.  An abstract syntax tree can be
 compiled into a Python code object using the built-in :func:`compile` function.
 
 
+.. seealso::
+
+   Latest version of the `ast module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/ast.py?view=markup>`_
+
 Node classes
 ------------
 

Doc/library/calendar.rst

@@ -22,6 +22,10 @@ in both directions.  This matches the definition of the "proleptic Gregorian"
 calendar in Dershowitz and Reingold's book "Calendrical Calculations", where
 it's the base calendar for all computations.
 
+.. seealso::
+
+   Latest version of the `calendar module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/calendar.py?view=markup>`_
 
 .. class:: Calendar([firstweekday])
 

Doc/library/collections.rst

@@ -44,6 +44,10 @@ In addition to containers, the collections module provides some ABCs
 provides a particular interface, for example, whether it is hashable or
 a mapping.
 
+.. seealso::
+
+   Latest version of the `collections module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/collections.py?view=markup>`_
 
 :class:`Counter` objects
 ------------------------
@@ -970,6 +974,9 @@ Notes on using :class:`Set` and :class:`MutableSet` as a mixin:
 
 .. seealso::
 
+   * Latest version of the `Python source code for the collections abstract base classes
+     <http://svn.python.org/view/python/branches/release27-maint/Lib/_abcoll.py?view=markup>`_
+
    * `OrderedSet recipe <http://code.activestate.com/recipes/576694/>`_ for an
      example built on :class:`MutableSet`.
 

Doc/library/queue.rst

@@ -24,6 +24,11 @@ the first retrieved (operating like a stack).  With a priority queue,
 the entries are kept sorted (using the :mod:`heapq` module) and the
 lowest valued entry is retrieved first.
 
+.. seealso::
+
+   Latest version of the `queue module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/queue.py?view=markup>`_
+
 The :mod:`Queue` module defines the following classes and exceptions:
 
 .. class:: Queue(maxsize=0)

Doc/library/random.rst

@@ -9,6 +9,11 @@
 This module implements pseudo-random number generators for various
 distributions.
 
+.. seealso::
+
+   Latest version of the `random module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/random.py?view=markup>`_
+
 For integers, uniform selection from a range. For sequences, uniform selection
 of a random element, a function to generate a random permutation of a list
 in-place, and a function for random sampling without replacement.

Doc/library/textwrap.rst

@@ -16,6 +16,10 @@ and a utility function  :func:`dedent`.  If you're just wrapping or filling one
 or two  text strings, the convenience functions should be good enough;
 otherwise,  you should use an instance of :class:`TextWrapper` for efficiency.
 
+.. seealso::
+
+   Latest version of the `textwrap module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/textwrap.py?view=markup>`_
 
 .. function:: wrap(text[, width[, ...]])
 

Doc/library/threading.rst

@@ -26,6 +26,10 @@ The :mod:`dummy_threading` module is provided for situations where
    Starting with Python 2.5, several Thread methods raise :exc:`RuntimeError`
    instead of :exc:`AssertionError` if called erroneously.
 
+.. seealso::
+
+   Latest version of the `threading module Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/threading.py?view=markup>`_
 
 This module defines the following functions and objects:
 

Doc/library/userdict.rst

@@ -19,6 +19,11 @@ available starting with Python version 2.2).  Prior to the introduction of
 sub-classes that obtained new behaviors by overriding existing methods or adding
 new ones.
 
+.. seealso::
+
+   Latest version of the `UserDict Python source code
+   <http://svn.python.org/view/python/branches/release27-maint/Lib/UserDict.py?view=markup>`_
+
 The :mod:`UserDict` module defines the :class:`UserDict` class and
 :class:`DictMixin`: