Remove redundant leading zeroes in PEP references.

Doc/library/contextlib.rst

@@ -603,7 +603,7 @@ an explicit ``with`` statement.
 
 .. seealso::
 
-   :pep:`0343` - The "with" statement
+   :pep:`343` - The "with" statement
       The specification, background, and examples for the Python :keyword:`with`
       statement.
 

Doc/library/weakref.rst

@@ -329,7 +329,7 @@ These method have the same issues as the and :meth:`keyrefs` method of
 
 .. seealso::
 
-   :pep:`0205` - Weak References
+   :pep:`205` - Weak References
       The proposal and rationale for this feature, including links to earlier
       implementations and information about similar features in other languages.
 

Doc/reference/compound_stmts.rst

@@ -439,7 +439,7 @@ is equivalent to ::
 
 .. seealso::
 
-   :pep:`0343` - The "with" statement
+   :pep:`343` - The "with" statement
       The specification, background, and examples for the Python :keyword:`with`
       statement.
 

Doc/reference/datamodel.rst

@@ -2189,7 +2189,7 @@ For more information on context managers, see :ref:`typecontextmanager`.
 
 .. seealso::
 
-   :pep:`0343` - The "with" statement
+   :pep:`343` - The "with" statement
       The specification, background, and examples for the Python :keyword:`with`
       statement.
 

Doc/reference/expressions.rst

@@ -378,14 +378,14 @@ on the right hand side of an assignment statement.
 
 .. seealso::
 
-   :pep:`0255` - Simple Generators
+   :pep:`255` - Simple Generators
       The proposal for adding generators and the :keyword:`yield` statement to Python.
 
-   :pep:`0342` - Coroutines via Enhanced Generators
+   :pep:`342` - Coroutines via Enhanced Generators
       The proposal to enhance the API and syntax of generators, making them
       usable as simple coroutines.
 
-   :pep:`0380` - Syntax for Delegating to a Subgenerator
+   :pep:`380` - Syntax for Delegating to a Subgenerator
       The proposal to introduce the :token:`yield_from` syntax, making delegation
       to sub-generators easy.
 

Doc/whatsnew/3.0.rst

@@ -204,11 +204,11 @@ Python 3.0 has simplified the rules for ordering comparisons:
 Integers
 --------
 
-* :pep:`0237`: Essentially, :class:`long` renamed to :class:`int`.
+* :pep:`237`: Essentially, :class:`long` renamed to :class:`int`.
   That is, there is only one built-in integral type, named
   :class:`int`; but it behaves mostly like the old :class:`long` type.
 
-* :pep:`0238`: An expression like ``1/2`` returns a float.  Use
+* :pep:`238`: An expression like ``1/2`` returns a float.  Use
   ``1//2`` to get the truncating behavior.  (The latter syntax has
   existed for years, at least since Python 2.2.)
 
@@ -384,7 +384,7 @@ New Syntax
 
 * Dictionary comprehensions: ``{k: v for k, v in stuff}`` means the
   same thing as ``dict(stuff)`` but is more flexible.  (This is
-  :pep:`0274` vindicated. :-)
+  :pep:`274` vindicated. :-)
 
 * Set literals, e.g. ``{1, 2}``.  Note that ``{}`` is an empty
   dictionary; use ``set()`` for an empty set.  Set comprehensions are
@@ -469,7 +469,7 @@ Removed Syntax
 
 * The only acceptable syntax for relative imports is :samp:`from .[{module}]
   import {name}`.  All :keyword:`import` forms not starting with ``.`` are
-  interpreted as absolute imports.  (:pep:`0328`)
+  interpreted as absolute imports.  (:pep:`328`)
 
 * Classic classes are gone.
 
@@ -555,9 +555,9 @@ review:
 
 * Many old modules were removed.  Some, like :mod:`gopherlib` (no
   longer used) and :mod:`md5` (replaced by :mod:`hashlib`), were
-  already deprecated by :pep:`0004`.  Others were removed as a result
+  already deprecated by :pep:`4`.  Others were removed as a result
   of the removal of support for various platforms such as Irix, BeOS
-  and Mac OS 9 (see :pep:`0011`).  Some modules were also selected for
+  and Mac OS 9 (see :pep:`11`).  Some modules were also selected for
   removal in Python 3.0 due to lack of use or because a better
   replacement exists.  See :pep:`3108` for an exhaustive list.
 
@@ -568,7 +568,7 @@ review:
   externally maintained at https://www.jcea.es/programacion/pybsddb.htm.
 
 * Some modules were renamed because their old name disobeyed
-  :pep:`0008`, or for various other reasons.  Here's the list:
+  :pep:`8`, or for various other reasons.  Here's the list:
 
   =======================  =======================
   Old Name                 New Name
@@ -685,7 +685,7 @@ Changes To Exceptions
 The APIs for raising and catching exception have been cleaned up and
 new powerful features added:
 
-* :pep:`0352`: All exceptions must be derived (directly or indirectly)
+* :pep:`352`: All exceptions must be derived (directly or indirectly)
   from :exc:`BaseException`.  This is the root of the exception
   hierarchy.  This is not new as a recommendation, but the
   *requirement* to inherit from :exc:`BaseException` is new.  (Python