diff --git a/Demo/tix/INSTALL.txt b/Demo/tix/INSTALL.txt
index ac70b68..c598e40 100644
--- a/Demo/tix/INSTALL.txt
+++ b/Demo/tix/INSTALL.txt
@@ -4,7 +4,7 @@
 ----------------
 
 0) To use Tix.py, you need Tcl/Tk (V8.3.3), Tix (V8.1.1) and Python (V2.1.1).
-   Tix.py has been written and tested on a Intel Pentium running RH Linux 5.2
+   Tix.py has been written and tested on an Intel Pentium running RH Linux 5.2
    and Mandrake Linux 7.0 and Windows with the above mentioned packages.
 
    Older versions, e.g. Tix 4.1 and Tk 8.0, might also work.
diff --git a/Doc/howto/sorting.rst b/Doc/howto/sorting.rst
index 675ed97..7da2d43 100644
--- a/Doc/howto/sorting.rst
+++ b/Doc/howto/sorting.rst
@@ -90,7 +90,7 @@
 The key-function patterns shown above are very common, so Python provides
 convenience functions to make accessor functions easier and faster. The operator
 module has :func:`operator.itemgetter`, :func:`operator.attrgetter`, and
-starting in Python 2.5 a :func:`operator.methodcaller` function.
+starting in Python 2.5 an :func:`operator.methodcaller` function.
 
 Using those functions, the above examples become simpler and faster:
 
diff --git a/Doc/library/chunk.rst b/Doc/library/chunk.rst
index 04c7e27..d31fa0a 100644
--- a/Doc/library/chunk.rst
+++ b/Doc/library/chunk.rst
@@ -48,7 +48,7 @@
 the :class:`Chunk` class defined here is to instantiate an instance at the start
 of each chunk and read from the instance until it reaches the end, after which a
 new instance can be instantiated. At the end of the file, creating a new
-instance will fail with a :exc:`EOFError` exception.
+instance will fail with an :exc:`EOFError` exception.
 
 
 .. class:: Chunk(file[, align, bigendian, inclheader])
diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index ead6b7a..c6bf3ef 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -276,7 +276,7 @@
    generating the delta lines) in unified diff format.
 
    Unified diffs are a compact way of showing just the lines that have changed plus
-   a few lines of context.  The changes are shown in a inline style (instead of
+   a few lines of context.  The changes are shown in an inline style (instead of
    separate before/after blocks).  The number of context lines is set by *n* which
    defaults to three.
 
diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index 3ab7b3b..b155daf 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -283,9 +283,9 @@
 
 .. method:: FTP.transfercmd(cmd[, rest])
 
-   Initiate a transfer over the data connection.  If the transfer is active, send a
+   Initiate a transfer over the data connection.  If the transfer is active, send an
    ``EPRT`` or  ``PORT`` command and the transfer command specified by *cmd*, and
-   accept the connection.  If the server is passive, send a ``EPSV`` or ``PASV``
+   accept the connection.  If the server is passive, send an ``EPSV`` or ``PASV``
    command, connect to it, and start the transfer command.  Either way, return the
    socket for the connection.
 
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index d3cdbf1..633a6af 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -221,7 +221,7 @@
    Even though :class:`IOBase` does not declare :meth:`read`, :meth:`readinto`,
    or :meth:`write` because their signatures will vary, implementations and
    clients should consider those methods part of the interface.  Also,
-   implementations may raise a :exc:`IOError` when operations they do not
+   implementations may raise an :exc:`IOError` when operations they do not
    support are called.
 
    The basic type used for binary data read from or written to a file is
diff --git a/Doc/library/optparse.rst b/Doc/library/optparse.rst
index dfb43a1..c1ed15b 100644
--- a/Doc/library/optparse.rst
+++ b/Doc/library/optparse.rst
@@ -1327,7 +1327,7 @@
    the list of arguments to process (default: ``sys.argv[1:]``)
 
 ``values``
-   a :class:`optparse.Values` object to store option arguments in (default: a
+   an :class:`optparse.Values` object to store option arguments in (default: a
    new instance of :class:`Values`) -- if you give an existing object, the
    option defaults will not be initialized on it
 
diff --git a/Doc/library/os.path.rst b/Doc/library/os.path.rst
index 5d7edd1..99a36af 100644
--- a/Doc/library/os.path.rst
+++ b/Doc/library/os.path.rst
@@ -256,7 +256,7 @@
 .. function:: samefile(path1, path2)
 
    Return ``True`` if both pathname arguments refer to the same file or directory
-   (as indicated by device number and i-node number). Raise an exception if a
+   (as indicated by device number and i-node number). Raise an exception if an
    :func:`os.stat` call on either pathname fails.
 
    Availability: Unix.
diff --git a/Doc/library/smtplib.rst b/Doc/library/smtplib.rst
index 5b2808d..b6e7689 100644
--- a/Doc/library/smtplib.rst
+++ b/Doc/library/smtplib.rst
@@ -22,7 +22,7 @@
 
 .. class:: SMTP([host[, port[, local_hostname[, timeout]]]])
 
-   A :class:`SMTP` instance encapsulates an SMTP connection.  It has methods
+   An :class:`SMTP` instance encapsulates an SMTP connection.  It has methods
    that support a full repertoire of SMTP and ESMTP operations. If the optional
    host and port parameters are given, the SMTP :meth:`connect` method is
    called with those parameters during initialization.  If specified,
@@ -45,7 +45,7 @@
 
 .. class:: SMTP_SSL([host[, port[, local_hostname[, keyfile[, certfile[, timeout]]]]]])
 
-   A :class:`SMTP_SSL` instance behaves exactly the same as instances of
+   An :class:`SMTP_SSL` instance behaves exactly the same as instances of
    :class:`SMTP`. :class:`SMTP_SSL` should be used for situations where SSL is
    required from the beginning of the connection and using :meth:`starttls` is
    not appropriate. If *host* is not specified, the local host is used. If
diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index f79eba6..73b5d5c 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -757,7 +757,7 @@
    Set blocking or non-blocking mode of the socket: if *flag* is 0, the socket is
    set to non-blocking, else to blocking mode.  Initially all sockets are in
    blocking mode.  In non-blocking mode, if a :meth:`recv` call doesn't find any
-   data, or if a :meth:`send` call can't immediately dispose of the data, a
+   data, or if a :meth:`send` call can't immediately dispose of the data, an
    :exc:`error` exception is raised; in blocking mode, the calls block until they
    can proceed. ``s.setblocking(0)`` is equivalent to ``s.settimeout(0.0)``;
    ``s.setblocking(1)`` is equivalent to ``s.settimeout(None)``.
diff --git a/Doc/library/sqlite3.rst b/Doc/library/sqlite3.rst
index f897234..2b730e8 100644
--- a/Doc/library/sqlite3.rst
+++ b/Doc/library/sqlite3.rst
@@ -583,7 +583,7 @@
    .. attribute:: lastrowid
 
       This read-only attribute provides the rowid of the last modified row. It is
-      only set if you issued a ``INSERT`` statement using the :meth:`execute`
+      only set if you issued an ``INSERT`` statement using the :meth:`execute`
       method. For operations other than ``INSERT`` or when :meth:`executemany` is
       called, :attr:`lastrowid` is set to :const:`None`.
 
diff --git a/Doc/library/sunau.rst b/Doc/library/sunau.rst
index 4bdb99b..5d57d4b 100644
--- a/Doc/library/sunau.rst
+++ b/Doc/library/sunau.rst
@@ -54,8 +54,8 @@
 
    Note that it does not allow read/write files.
 
-   A *mode* of ``'r'`` returns a :class:`AU_read` object, while a *mode* of ``'w'``
-   or ``'wb'`` returns a :class:`AU_write` object.
+   A *mode* of ``'r'`` returns an :class:`AU_read` object, while a *mode* of ``'w'``
+   or ``'wb'`` returns an :class:`AU_write` object.
 
 
 .. function:: openfp(file, mode)
diff --git a/Doc/library/webbrowser.rst b/Doc/library/webbrowser.rst
index f74b89f..03c5713 100644
--- a/Doc/library/webbrowser.rst
+++ b/Doc/library/webbrowser.rst
@@ -20,7 +20,7 @@
 the user exits the browser.
 
 If the environment variable :envvar:`BROWSER` exists, it is interpreted to
-override the platform default list of browsers, as a :data:`os.pathsep`-separated
+override the platform default list of browsers, as an :data:`os.pathsep`-separated
 list of browsers to try in order.  When the value of a list part contains the
 string ``%s``, then it is  interpreted as a literal browser command line to be
 used with the argument URL substituted for ``%s``; if the part does not contain
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 9e62dfc..3f3b30f 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1418,7 +1418,7 @@
    will not be usable in hashed collections.  If a class defines mutable objects
    and implements a :meth:`__cmp__` or :meth:`__eq__` method, it should not
    implement :meth:`__hash__`, since hashable collection implementations require
-   that a object's hash value is immutable (if the object's hash value changes,
+   that an object's hash value is immutable (if the object's hash value changes,
    it will be in the wrong hash bucket).
 
    User-defined classes have :meth:`__cmp__` and :meth:`__hash__` methods
diff --git a/Doc/tutorial/errors.rst b/Doc/tutorial/errors.rst
index f93a544..9787e6b 100644
--- a/Doc/tutorial/errors.rst
+++ b/Doc/tutorial/errors.rst
@@ -345,7 +345,7 @@
 A *finally clause* is always executed before leaving the :keyword:`try`
 statement, whether an exception has occurred or not. When an exception has
 occurred in the :keyword:`try` clause and has not been handled by an
-:keyword:`except` clause (or it has occurred in a :keyword:`except` or
+:keyword:`except` clause (or it has occurred in an :keyword:`except` or
 :keyword:`else` clause), it is re-raised after the :keyword:`finally` clause has
 been executed.  The :keyword:`finally` clause is also executed "on the way out"
 when any other clause of the :keyword:`try` statement is left via a
diff --git a/Doc/whatsnew/2.1.rst b/Doc/whatsnew/2.1.rst
index d25e48d..f756506 100644
--- a/Doc/whatsnew/2.1.rst
+++ b/Doc/whatsnew/2.1.rst
@@ -555,7 +555,7 @@
 and experiment with them.  With the result experience, perhaps it'll be possible
 to design a really good catalog and then build support for it into Python 2.2.
 For example, the Distutils :command:`sdist` and :command:`bdist_\*` commands
-could support a ``upload`` option that would automatically upload your
+could support an ``upload`` option that would automatically upload your
 package to a catalog server.
 
 You can start creating packages containing :file:`PKG-INFO` even if you're not
diff --git a/Include/abstract.h b/Include/abstract.h
index 78a1825..6ccda66 100644
--- a/Include/abstract.h
+++ b/Include/abstract.h
@@ -94,7 +94,7 @@
   numeric, sequence, and mapping.  Each protocol consists of a
   collection of related operations.  If an operation that is not
   provided by a particular type is invoked, then a standard exception,
-  NotImplementedError is raised with a operation name as an argument.
+  NotImplementedError is raised with an operation name as an argument.
   In addition, for convenience this interface defines a set of
   constructors for building objects of built-in types.  This is needed
   so new objects can be returned from C functions that otherwise treat
diff --git a/Include/codecs.h b/Include/codecs.h
index 8a9041b..851bc9f 100644
--- a/Include/codecs.h
+++ b/Include/codecs.h
@@ -146,14 +146,14 @@
        const char *encoding
        );
 
-/* Get a IncrementalEncoder object for the given encoding. */
+/* Get an IncrementalEncoder object for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalEncoder(
        const char *encoding,
        const char *errors
        );
 
-/* Get a IncrementalDecoder object function for the given encoding. */
+/* Get an IncrementalDecoder object function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalDecoder(
        const char *encoding,
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 11348b2..f022a4e 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -274,7 +274,7 @@
     Even though IOBase does not declare read, readinto, or write because
     their signatures will vary, implementations and clients should
     consider those methods part of the interface. Also, implementations
-    may raise a IOError when operations they do not support are called.
+    may raise an IOError when operations they do not support are called.
 
     The basic type used for binary data read from or written to a file is
     the bytes type. Method arguments may also be bytearray or memoryview of
diff --git a/Lib/chunk.py b/Lib/chunk.py
index 3e3b5a4..2d15abe 100644
--- a/Lib/chunk.py
+++ b/Lib/chunk.py
@@ -21,7 +21,7 @@
 usage of the Chunk class defined here is to instantiate an instance at
 the start of each chunk and read from the instance until it reaches
 the end, after which a new instance can be instantiated.  At the end
-of the file, creating a new instance will fail with a EOFError
+of the file, creating a new instance will fail with an EOFError
 exception.
 
 Usage:
diff --git a/Lib/codecs.py b/Lib/codecs.py
index 3d9be35..590238e 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -252,7 +252,7 @@
     """
     def __init__(self, errors='strict'):
         """
-        Creates a IncrementalDecoder instance.
+        Creates an IncrementalDecoder instance.
 
         The IncrementalDecoder may use different error handling schemes by
         providing the errors keyword argument. See the module docstring
@@ -1012,7 +1012,7 @@
     """
     Encoding iterator.
 
-    Encodes the input strings from the iterator using a IncrementalEncoder.
+    Encodes the input strings from the iterator using an IncrementalEncoder.
 
     errors and kwargs are passed through to the IncrementalEncoder
     constructor.
@@ -1030,7 +1030,7 @@
     """
     Decoding iterator.
 
-    Decodes the input strings from the iterator using a IncrementalDecoder.
+    Decodes the input strings from the iterator using an IncrementalDecoder.
 
     errors and kwargs are passed through to the IncrementalDecoder
     constructor.
diff --git a/Lib/distutils/cygwinccompiler.py b/Lib/distutils/cygwinccompiler.py
index c72a249..258e138 100644
--- a/Lib/distutils/cygwinccompiler.py
+++ b/Lib/distutils/cygwinccompiler.py
@@ -347,7 +347,7 @@
 # class Mingw32CCompiler
 
 # Because these compilers aren't configured in Python's pyconfig.h file by
-# default, we should at least warn the user if he is using a unmodified
+# default, we should at least warn the user if he is using an unmodified
 # version.
 
 CONFIG_H_OK = "ok"
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 449ce71..3739741 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -264,7 +264,7 @@
         return self.voidcmd(cmd)
 
     def sendeprt(self, host, port):
-        '''Send a EPRT command with the current host and the given port number.'''
+        '''Send an EPRT command with the current host and the given port number.'''
         af = 0
         if self.af == socket.AF_INET:
             af = 1
@@ -842,7 +842,7 @@
 
 
 def parse229(resp, peer):
-    '''Parse the '229' response for a EPSV request.
+    '''Parse the '229' response for an EPSV request.
     Raises error_proto if it does not contain '(|||port|)'
     Return ('host.addr.as.numbers', port#) tuple.'''
 
diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index 0c5b713..8a33719 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -1384,7 +1384,7 @@
             text.see("insert")
             text.undo_block_stop()
 
-    # Our editwin provides a is_char_in_string function that works
+    # Our editwin provides an is_char_in_string function that works
     # with a Tk text index, but PyParse only knows about offsets into
     # a string. This builds a function for PyParse that accepts an
     # offset.
diff --git a/Lib/idlelib/ReplaceDialog.py b/Lib/idlelib/ReplaceDialog.py
index 9a9f74c..66a871a 100644
--- a/Lib/idlelib/ReplaceDialog.py
+++ b/Lib/idlelib/ReplaceDialog.py
@@ -59,7 +59,7 @@
     def default_command(self, event=None):
         if self.do_find(self.ok):
             if self.do_replace():   # Only find next match if replace succeeded.
-                                    # A bad re can cause a it to fail.
+                                    # A bad re can cause it to fail.
                 self.do_find(0)
 
     def _replace_expand(self, m, repl):
diff --git a/Lib/io.py b/Lib/io.py
index 1438493..53ee102 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -19,7 +19,7 @@
 Another IOBase subclass, TextIOBase, deals with the encoding and decoding
 of streams into text. TextIOWrapper, which extends it, is a buffered text
 interface to a buffered raw stream (`BufferedIOBase`). Finally, StringIO
-is a in-memory stream for text.
+is an in-memory stream for text.
 
 Argument names are not part of the specification, and only the arguments
 of open() are intended to be used as keyword arguments.
diff --git a/Lib/lib2to3/fixes/fix_input.py b/Lib/lib2to3/fixes/fix_input.py
index fbf4c72..728636b 100644
--- a/Lib/lib2to3/fixes/fix_input.py
+++ b/Lib/lib2to3/fixes/fix_input.py
@@ -17,7 +17,7 @@
               """
 
     def transform(self, node, results):
-        # If we're already wrapped in a eval() call, we're done.
+        # If we're already wrapped in an eval() call, we're done.
         if context.match(node.parent.parent):
             return
 
diff --git a/Lib/msilib/schema.py b/Lib/msilib/schema.py
index b84eb22..e132194 100644
--- a/Lib/msilib/schema.py
+++ b/Lib/msilib/schema.py
@@ -733,7 +733,7 @@
 (u'CustomAction',u'Source',u'Y',None, None, None, None, u'CustomSource',None, u'The table reference of the source of the code.',),
 (u'CustomAction',u'Target',u'Y',None, None, None, None, u'Formatted',None, u'Execution parameter, depends on the type of custom action',),
 (u'DrLocator',u'Signature_',u'N',None, None, None, None, u'Identifier',None, u'The Signature_ represents a unique file signature and is also the foreign key in the Signature table.',),
-(u'DrLocator',u'Path',u'Y',None, None, None, None, u'AnyPath',None, u'The path on the user system. This is a either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.',),
+(u'DrLocator',u'Path',u'Y',None, None, None, None, u'AnyPath',None, u'The path on the user system. This is either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.',),
 (u'DrLocator',u'Depth',u'Y',0,32767,None, None, None, None, u'The depth below the path to which the Signature_ is recursively searched. If absent, the depth is assumed to be 0.',),
 (u'DrLocator',u'Parent',u'Y',None, None, None, None, u'Identifier',None, u'The parent file signature. It is also a foreign key in the Signature table. If null and the Path column does not expand to a full path, then all the fixed drives of the user system are searched using the Path.',),
 (u'DuplicateFile',u'File_',u'N',None, None, u'File',1,u'Identifier',None, u'Foreign key referencing the source file to be duplicated.',),
diff --git a/Lib/test/decimaltestdata/fma.decTest b/Lib/test/decimaltestdata/fma.decTest
index a8197ef..ee2a8d4 100644
--- a/Lib/test/decimaltestdata/fma.decTest
+++ b/Lib/test/decimaltestdata/fma.decTest
@@ -148,7 +148,7 @@
 fmax2019 fma -9.999999  9.999999  0E+999999  -> -100.000 Inexact Rounded
 fmax2020 fma -9.999999 -9.999999  0E+999999  ->  100.000 Inexact Rounded
 
--- 1999.12.21: next one is a edge case if intermediate longs are used
+-- 1999.12.21: next one is an edge case if intermediate longs are used
 precision: 15
 fmax2059 fma 999999999999 9765625  0E+999999  -> 9.76562499999023E+18 Inexact Rounded
 precision: 30
diff --git a/Lib/test/decimaltestdata/multiply.decTest b/Lib/test/decimaltestdata/multiply.decTest
index 6a23d5a..e8bd77a 100644
--- a/Lib/test/decimaltestdata/multiply.decTest
+++ b/Lib/test/decimaltestdata/multiply.decTest
@@ -49,7 +49,7 @@
 mulx019 multiply -9.999999999  9.999999999 -> -100.000 Inexact Rounded
 mulx020 multiply -9.999999999 -9.999999999 ->  100.000 Inexact Rounded
 
--- 1999.12.21: next one is a edge case if intermediate longs are used
+-- 1999.12.21: next one is an edge case if intermediate longs are used
 precision: 15
 mulx059 multiply 999999999999 9765625 -> 9.76562499999023E+18 Inexact Rounded
 precision: 30
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 57c7c88..fb34893 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -649,7 +649,7 @@
         except OSError as e:
             self.assertEqual(e.errno, errno.EBADF)
         else:
-            self.fail("%r didn't raise a OSError with a bad file descriptor"
+            self.fail("%r didn't raise an OSError with a bad file descriptor"
                       % f)
 
     @unittest.skipUnless(hasattr(os, 'isatty'), 'test needs os.isatty()')
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index 85f9965..89c5719 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -196,7 +196,7 @@
         # The exponential backoff of the timeout amounts to a total
         # of ~1 second after which the deletion is probably an error
         # anyway.
-        # Testing on a i7@4.3GHz shows that usually only 1 iteration is
+        # Testing on an i7@4.3GHz shows that usually only 1 iteration is
         # required when contention occurs.
         timeout = 0.001
         while timeout < 1.0:
diff --git a/Lib/xmlrpclib.py b/Lib/xmlrpclib.py
index e072f71..b0e7485 100644
--- a/Lib/xmlrpclib.py
+++ b/Lib/xmlrpclib.py
@@ -970,7 +970,7 @@
                   "unexpected type in multicall result"
 
 class MultiCall:
-    """server -> a object used to boxcar method calls
+    """server -> an object used to boxcar method calls
 
     server should be a ServerProxy object.
 
@@ -1334,7 +1334,7 @@
     ##
     # Create parser.
     #
-    # @return A 2-tuple containing a parser and a unmarshaller.
+    # @return A 2-tuple containing a parser and an unmarshaller.
 
     def getparser(self):
         # get parser and unmarshaller
diff --git a/Misc/HISTORY b/Misc/HISTORY
index fa0c623..ae5c643 100644
--- a/Misc/HISTORY
+++ b/Misc/HISTORY
@@ -388,7 +388,7 @@
 -----------------
 
 - Bug #1441486: The literal representation of -(sys.maxint - 1)
-  again evaluates to a int object, not a long.
+  again evaluates to an int object, not a long.
 
 - Bug #1501934: The scope of global variables that are locally assigned
   using augmented assignment is now correctly determined.
@@ -4295,7 +4295,7 @@
   interpreter executions, would fail.
 
 - "%c" % u"a" now returns a unicode string instead of raising a
-  TypeError. u"%c" % 0xffffffff now raises a OverflowError instead
+  TypeError. u"%c" % 0xffffffff now raises an OverflowError instead
   of a ValueError to be consistent with "%c" % 256. See SF patch #710127.
 
 Extension modules
@@ -12193,7 +12193,7 @@
 
 - The interfaces for the bind*() and unbind() widget methods have been
 redesigned; the bind*() methods now return the name of the Tcl command 
-created for the callback, and this can be passed as a optional
+created for the callback, and this can be passed as an optional
 argument to unbind() in order to delete the command (normally, such
 commands are automatically unbound when the widget is destroyed, but
 for some applications this isn't enough).
diff --git a/Misc/NEWS b/Misc/NEWS
index 2622999..fbb7603 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1324,7 +1324,7 @@
 - Issue #22530: Allow the ``group()`` method of regular expression match objects
   to take a ``long`` as an index.
 
-- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
+- Issue #22517: When an io.BufferedRWPair object is deallocated, clear its
   weakrefs.
 
 - Issue #10510: distutils register and upload methods now use HTML standards
@@ -2989,7 +2989,7 @@
   created with PyFile_FromString().
 
 - Issue #14474: Save and restore exception state in thread.start_new_thread()
-  while writing error message if the thread leaves a unhandled exception.
+  while writing error message if the thread leaves an unhandled exception.
 
 - Issue #13019: Fix potential reference leaks in bytearray.extend().  Patch
   by Suman Saha.
@@ -3965,7 +3965,7 @@
 - Issues #12610 and #12609: Verify that user generated AST has correct string
   and identifier types before compiling.
 
-- Issue #11627: Fix segfault when __new__ on a exception returns a
+- Issue #11627: Fix segfault when __new__ on an exception returns a
   non-exception class.
 
 - Issue #12149: Update the method cache after a type's dictionnary gets
@@ -4281,7 +4281,7 @@
 
 - Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.
 
-- Issue #4376: ctypes now supports nested structures in a endian different than
+- Issue #4376: ctypes now supports nested structures in an endian different than
   the parent structure. Patch by Vlad Riscutia.
 
 - Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
@@ -6697,7 +6697,7 @@
 
 - Issue #7610: Reworked implementation of the internal ``zipfile.ZipExtFile``
   class used to represent files stored inside an archive.  The new
-  implementation is significantly faster and can be wrapped in a
+  implementation is significantly faster and can be wrapped in an
   ``io.BufferedReader`` object for more speedups.  It also solves an issue
   where interleaved calls to ``read()`` and ``readline()`` give wrong results.
   Patch by Nir Aides.
@@ -7952,7 +7952,7 @@
   mulitiprocessing.manager so that users can install custom handlers/etc.
 
 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of
-  the object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES.  Added
+  the object when writefile is called causes an ERROR_NO_SYSTEM_RESOURCES.  Added
   docs to note the limitation.
 
 - unittest.assertNotEqual() now uses the inequality operator (!=) instead of the
diff --git a/Misc/cheatsheet b/Misc/cheatsheet
index 3e603fc..0867079 100644
--- a/Misc/cheatsheet
+++ b/Misc/cheatsheet
@@ -953,7 +953,7 @@
                     instanceobject as arg, returns list of names in its attr.
                     dict.
 divmod(a,b)         Returns tuple of (a/b, a%b)
-enumerate(seq)      Return a iterator giving:  (0, seq[0]), (1, seq[1]), ...
+enumerate(seq)      Return an iterator giving:  (0, seq[0]), (1, seq[1]), ...
 eval(s[, globals[,  Eval string s in (optional) globals, locals contexts.s must
 locals]])           have no NUL's or newlines. s can also be acode object.
                     Example: x = 1; incr_x = eval('x + 1')
diff --git a/Modules/_ctypes/libffi/src/x86/darwin64.S b/Modules/_ctypes/libffi/src/x86/darwin64.S
index 2f7394e..0c72ed2 100644
--- a/Modules/_ctypes/libffi/src/x86/darwin64.S
+++ b/Modules/_ctypes/libffi/src/x86/darwin64.S
@@ -350,7 +350,7 @@
 	.set	L$set$3,LUW1-LUW0
 	.long	L$set$3
 
-	/* New stack frame based off rbp.  This is a itty bit of unwind
+	/* New stack frame based off rbp.  This is an itty bit of unwind
 	   trickery in that the CFA *has* changed.  There is no easy way
 	   to describe it correctly on entry to the function.  Fortunately,
 	   it doesn't matter too much since at all points we can correctly
diff --git a/Modules/_ctypes/libffi/src/x86/unix64.S b/Modules/_ctypes/libffi/src/x86/unix64.S
index dcd6bc7..45a0ed7 100644
--- a/Modules/_ctypes/libffi/src/x86/unix64.S
+++ b/Modules/_ctypes/libffi/src/x86/unix64.S
@@ -366,7 +366,7 @@
 	.byte	0x4			/* DW_CFA_advance_loc4 */
 	.long	.LUW1-.LUW0
 
-	/* New stack frame based off rbp.  This is a itty bit of unwind
+	/* New stack frame based off rbp.  This is an itty bit of unwind
 	   trickery in that the CFA *has* changed.  There is no easy way
 	   to describe it correctly on entry to the function.  Fortunately,
 	   it doesn't matter too much since at all points we can correctly
diff --git a/Modules/_ctypes/libffi_osx/x86/darwin64.S b/Modules/_ctypes/libffi_osx/x86/darwin64.S
index 165d469..1286d33 100644
--- a/Modules/_ctypes/libffi_osx/x86/darwin64.S
+++ b/Modules/_ctypes/libffi_osx/x86/darwin64.S
@@ -351,7 +351,7 @@
  .set  L$set$3,LUW1-LUW0
  .long L$set$3
 
- /* New stack frame based off rbp.  This is a itty bit of unwind
+ /* New stack frame based off rbp.  This is an itty bit of unwind
     trickery in that the CFA *has* changed.  There is no easy way
     to describe it correctly on entry to the function.  Fortunately,
     it doesn't matter too much since at all points we can correctly
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index 01f4577..ad336c7 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -730,7 +730,7 @@
     if (openssl_obj_name == NULL)
         return;
     /* Ignore aliased names, they pollute the list and OpenSSL appears to
-     * have a its own definition of alias as the resulting list still
+     * have its own definition of alias as the resulting list still
      * contains duplicate and alternate names for several algorithms.     */
     if (openssl_obj_name->alias)
         return;
diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index 04c4445..bbfea71 100644
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -74,7 +74,7 @@
 "Another IOBase subclass, TextIOBase, deals with the encoding and decoding\n"
 "of streams into text. TextIOWrapper, which extends it, is a buffered text\n"
 "interface to a buffered raw stream (`BufferedIOBase`). Finally, StringIO\n"
-"is a in-memory stream for text.\n"
+"is an in-memory stream for text.\n"
 "\n"
 "Argument names are not part of the specification, and only the arguments\n"
 "of open() are intended to be used as keyword arguments.\n"
diff --git a/Modules/_io/iobase.c b/Modules/_io/iobase.c
index 710ada4..5f7b345 100644
--- a/Modules/_io/iobase.c
+++ b/Modules/_io/iobase.c
@@ -35,7 +35,7 @@
     "Even though IOBase does not declare read, readinto, or write because\n"
     "their signatures will vary, implementations and clients should\n"
     "consider those methods part of the interface. Also, implementations\n"
-    "may raise a IOError when operations they do not support are called.\n"
+    "may raise an IOError when operations they do not support are called.\n"
     "\n"
     "The basic type used for binary data read from or written to a file is\n"
     "the bytes type. Method arguments may also be bytearray or memoryview\n"
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 38bb0d8..a95edce 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -881,8 +881,8 @@
             if (self->encoding == NULL) {
               catch_ImportError:
                 /*
-                 Importing locale can raise a ImportError because of
-                 _functools, and locale.getpreferredencoding can raise a
+                 Importing locale can raise an ImportError because of
+                 _functools, and locale.getpreferredencoding can raise an
                  ImportError if _locale is not available.  These will happen
                  during module building.
                 */
diff --git a/Modules/audioop.c b/Modules/audioop.c
index e829e4d..a4d1375 100644
--- a/Modules/audioop.c
+++ b/Modules/audioop.c
@@ -121,7 +121,7 @@
 
 /*
  * linear2ulaw() accepts a 14-bit signed integer and encodes it as u-law data
- * stored in a unsigned char.  This function should only be called with
+ * stored in an unsigned char.  This function should only be called with
  * the data shifted such that it only contains information in the lower
  * 14-bits.
  *
diff --git a/Modules/expat/pyexpatns.h b/Modules/expat/pyexpatns.h
index 2f2f4f9..999c5c7 100644
--- a/Modules/expat/pyexpatns.h
+++ b/Modules/expat/pyexpatns.h
@@ -21,7 +21,7 @@
  *
  *
  * The Solution:
- * Prefix all a exported symbols with "PyExpat_". This is similar to
+ * Prefix all exported symbols with "PyExpat_". This is similar to
  * what Mozilla does for some common libs:
  * http://lxr.mozilla.org/seamonkey/source/modules/libimg/png/mozpngconf.h#115
  *
diff --git a/Modules/readline.c b/Modules/readline.c
index 3bb0ac8..6091a68 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -1144,7 +1144,7 @@
         return NULL;
     }
 
-    /* We got an EOF, return a empty string. */
+    /* We got an EOF, return an empty string. */
     if (p == NULL) {
         p = PyMem_Malloc(1);
         if (p != NULL)
diff --git a/Objects/abstract.c b/Objects/abstract.c
index 3a50b73..2cb34b7 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1641,7 +1641,7 @@
         }
         return res;
     }
-    if (PyInt_Check(o)) { /* A int subclass without nb_int */
+    if (PyInt_Check(o)) { /* An int subclass without nb_int */
         PyIntObject *io = (PyIntObject*)o;
         return PyInt_FromLong(io->ob_ival);
     }
diff --git a/PC/msvcrtmodule.c b/PC/msvcrtmodule.c
index 057900d..44c82e4 100644
--- a/PC/msvcrtmodule.c
+++ b/PC/msvcrtmodule.c
@@ -148,7 +148,7 @@
     if (handle == -1)
         return PyErr_SetFromErrno(PyExc_IOError);
 
-    /* technically 'handle' is not a pointer, but a integer as
+    /* technically 'handle' is not a pointer, but an integer as
        large as a pointer, Python's *VoidPtr interface is the
        most appropriate here */
     return PyLong_FromVoidPtr((void*)handle);
diff --git a/PC/os2emx/Makefile b/PC/os2emx/Makefile
index bf2e486..613da64 100644
--- a/PC/os2emx/Makefile
+++ b/PC/os2emx/Makefile
@@ -102,7 +102,7 @@
   CFLAGS+=	-DPREFIX=$(DQUOTE)$(LIB_DIR)$(DQUOTE)
 endif
 
-# We're using the OMF format since EMX's ld has a obscure bug
+# We're using the OMF format since EMX's ld has an obscure bug
 # because of which it sometimes fails to build relocations
 # in .data segment that point to another .data locations
 # (except for the final linking if the .EXEs)
diff --git a/Python/thread.c b/Python/thread.c
index c54670d..3b69f96 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -50,7 +50,7 @@
    threads.
 
    This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
-   a check of __ia64 to verify that we're running on a ia64 system instead
+   a check of __ia64 to verify that we're running on an ia64 system instead
    of a pa-risc system.
 */
 #ifdef __hpux
diff --git a/Tools/msi/schema.py b/Tools/msi/schema.py
index b3032f8..523c836 100644
--- a/Tools/msi/schema.py
+++ b/Tools/msi/schema.py
@@ -733,7 +733,7 @@
 (u'CustomAction',u'Source',u'Y',None, None, None, None, u'CustomSource',None, u'The table reference of the source of the code.',),
 (u'CustomAction',u'Target',u'Y',None, None, None, None, u'Formatted',None, u'Execution parameter, depends on the type of custom action',),
 (u'DrLocator',u'Signature_',u'N',None, None, None, None, u'Identifier',None, u'The Signature_ represents a unique file signature and is also the foreign key in the Signature table.',),
-(u'DrLocator',u'Path',u'Y',None, None, None, None, u'AnyPath',None, u'The path on the user system. This is a either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.',),
+(u'DrLocator',u'Path',u'Y',None, None, None, None, u'AnyPath',None, u'The path on the user system. This is either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.',),
 (u'DrLocator',u'Depth',u'Y',0,32767,None, None, None, None, u'The depth below the path to which the Signature_ is recursively searched. If absent, the depth is assumed to be 0.',),
 (u'DrLocator',u'Parent',u'Y',None, None, None, None, u'Identifier',None, u'The parent file signature. It is also a foreign key in the Signature table. If null and the Path column does not expand to a full path, then all the fixed drives of the user system are searched using the Path.',),
 (u'DuplicateFile',u'File_',u'N',None, None, u'File',1,u'Identifier',None, u'Foreign key referencing the source file to be duplicated.',),
diff --git a/Tools/msi/uisample.py b/Tools/msi/uisample.py
index 456d9ae..d6c256b 100644
--- a/Tools/msi/uisample.py
+++ b/Tools/msi/uisample.py
@@ -998,7 +998,7 @@
 (u'CustomAction', u'Source', u'Y', None, None, None, None, u'CustomSource', None, u'The table reference of the source of the code.'),
 (u'CustomAction', u'Target', u'Y', None, None, None, None, u'Formatted', None, u'Execution parameter, depends on the type of custom action'),
 (u'DrLocator', u'Signature_', u'N', None, None, None, None, u'Identifier', None, u'The Signature_ represents a unique file signature and is also the foreign key in the Signature table.'),
-(u'DrLocator', u'Path', u'Y', None, None, None, None, u'AnyPath', None, u'The path on the user system. This is a either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.'),
+(u'DrLocator', u'Path', u'Y', None, None, None, None, u'AnyPath', None, u'The path on the user system. This is either a subpath below the value of the Parent or a full path. The path may contain properties enclosed within [ ] that will be expanded.'),
 (u'DrLocator', u'Depth', u'Y', 0, 32767, None, None, None, None, u'The depth below the path to which the Signature_ is recursively searched. If absent, the depth is assumed to be 0.'),
 (u'DrLocator', u'Parent', u'Y', None, None, None, None, u'Identifier', None, u'The parent file signature. It is also a foreign key in the Signature table. If null and the Path column does not expand to a full path, then all the fixed drives of the user system are searched using the Path.'),
 (u'DuplicateFile', u'File_', u'N', None, None, u'File', 1, u'Identifier', None, u'Foreign key referencing the source file to be duplicated.'),