diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 13a2807..3262354 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -234,7 +234,7 @@
 
 .. c:function:: PyObject *PyUnicode_FromString(const char *u)
 
-   Create a Unicode object from an UTF-8 encoded null-terminated char buffer
+   Create a Unicode object from a UTF-8 encoded null-terminated char buffer
    *u*.
 
    .. versionadded:: 2.6
@@ -347,7 +347,7 @@
 
 .. c:function:: PyObject* PyUnicode_FromEncodedObject(PyObject *obj, const char *encoding, const char *errors)
 
-   Coerce an encoded object *obj* to an Unicode object and return a reference with
+   Coerce an encoded object *obj* to a Unicode object and return a reference with
    incremented refcount.
 
    String and other char buffer compatible objects are decoded according to the
@@ -663,7 +663,7 @@
 
    If *Py_UNICODE_WIDE* is defined, a single :c:type:`Py_UNICODE` value may get
    represented as a surrogate pair. If it is not defined, each :c:type:`Py_UNICODE`
-   values is interpreted as an UCS-2 character.
+   values is interpreted as a UCS-2 character.
 
    Return *NULL* if an exception was raised by the codec.
 
diff --git a/Doc/howto/urllib2.rst b/Doc/howto/urllib2.rst
index 30763a2..42e84d3 100644
--- a/Doc/howto/urllib2.rst
+++ b/Doc/howto/urllib2.rst
@@ -55,7 +55,7 @@
     html = response.read()
 
 Many uses of urllib2 will be that simple (note that instead of an 'http:' URL we
-could have used an URL starting with 'ftp:', 'file:', etc.).  However, it's the
+could have used a URL starting with 'ftp:', 'file:', etc.).  However, it's the
 purpose of this tutorial to explain the more complicated cases, concentrating on
 HTTP.
 
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 3687f86..e58d954 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -1873,7 +1873,7 @@
    allows specifying the size of the array if the length of the string should not
    be used.
 
-   If the first parameter is a 8-bit string, it is converted into an unicode string
+   If the first parameter is a 8-bit string, it is converted into a unicode string
    according to ctypes conversion rules.
 
 
diff --git a/Doc/library/heapq.rst b/Doc/library/heapq.rst
index 16b2fd5..3dce037 100644
--- a/Doc/library/heapq.rst
+++ b/Doc/library/heapq.rst
@@ -244,7 +244,7 @@
 
    15 16   17 18   19 20   21 22   23 24   25 26   27 28   29 30
 
-In the tree above, each cell *k* is topping ``2*k+1`` and ``2*k+2``. In an usual
+In the tree above, each cell *k* is topping ``2*k+1`` and ``2*k+2``. In a usual
 binary tournament we see in sports, each cell is the winner over the two cells
 it tops, and we can trace the winner down the tree to see all opponents s/he
 had.  However, in many computer applications of such tournaments, we do not need
diff --git a/Doc/library/ic.rst b/Doc/library/ic.rst
index ab40e7a..5067084 100644
--- a/Doc/library/ic.rst
+++ b/Doc/library/ic.rst
@@ -83,7 +83,7 @@
 
 .. method:: IC.parseurl(data[, start[, end[, hint]]])
 
-   Find an URL somewhere in *data* and return start position, end position and the
+   Find a URL somewhere in *data* and return start position, end position and the
    URL. The optional *start* and *end* can be used to limit the search, so for
    instance if a user clicks in a long text field you can pass the whole text field
    and the click-position in *start* and this routine will return the whole URL in
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 6743b27..3d28e63 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -661,7 +661,7 @@
 
 .. class:: TextIOBase
 
-   Base class for text streams.  This class provides an unicode character
+   Base class for text streams.  This class provides a unicode character
    and line based interface to stream I/O.  There is no :meth:`readinto`
    method because Python's :class:`unicode` strings are immutable.
    It inherits :class:`IOBase`.  There is no public constructor.
diff --git a/Doc/library/logging.handlers.rst b/Doc/library/logging.handlers.rst
index 6731abc..3690d86 100644
--- a/Doc/library/logging.handlers.rst
+++ b/Doc/library/logging.handlers.rst
@@ -743,7 +743,7 @@
 
    .. method:: emit(record)
 
-      Sends the record to the Web server as an URL-encoded dictionary. The
+      Sends the record to the Web server as a URL-encoded dictionary. The
       :meth:`mapLogRecord` method is used to convert the record to the
       dictionary to be sent.
 
diff --git a/Doc/library/ttk.rst b/Doc/library/ttk.rst
index 051601d..bf15e71 100644
--- a/Doc/library/ttk.rst
+++ b/Doc/library/ttk.rst
@@ -686,7 +686,7 @@
 headings. Columns may be accessed by number or symbolic names listed in the
 widget option columns. See `Column Identifiers`_.
 
-Each item is identified by an unique name. The widget will generate item IDs
+Each item is identified by a unique name. The widget will generate item IDs
 if they are not supplied by the caller. There is a distinguished root item,
 named ``{}``. The root item itself is not displayed; its children appear at the
 top level of the hierarchy.
diff --git a/Doc/library/webbrowser.rst b/Doc/library/webbrowser.rst
index 64e7099..f74b89f 100644
--- a/Doc/library/webbrowser.rst
+++ b/Doc/library/webbrowser.rst
@@ -33,7 +33,7 @@
 browser and wait.
 
 The script :program:`webbrowser` can be used as a command-line interface for the
-module. It accepts an URL as the argument. It accepts the following optional
+module. It accepts a URL as the argument. It accepts the following optional
 parameters: ``-n`` opens the URL in a new browser window, if possible;
 ``-t`` opens the URL in a new browser page ("tab"). The options are,
 naturally, mutually exclusive.  Usage example::
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index 212a9e1..b588598 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -901,7 +901,7 @@
    to get proper namespace handling on output.  *text_or_uri* is a string
    containing the QName value, in the form {uri}local, or, if the tag argument
    is given, the URI part of a QName.  If *tag* is given, the first argument is
-   interpreted as an URI, and this argument is interpreted as a local name.
+   interpreted as a URI, and this argument is interpreted as a local name.
    :class:`QName` instances are opaque.
 
 
diff --git a/Doc/library/xml.sax.reader.rst b/Doc/library/xml.sax.reader.rst
index 6956cd1..7270153 100644
--- a/Doc/library/xml.sax.reader.rst
+++ b/Doc/library/xml.sax.reader.rst
@@ -101,7 +101,7 @@
 
    Process an input source, producing SAX events. The *source* object can be a
    system identifier (a string identifying the input source -- typically a file
-   name or an URL), a file-like object, or an :class:`InputSource` object. When
+   name or a URL), a file-like object, or an :class:`InputSource` object. When
    :meth:`parse` returns, the input is completely processed, and the parser object
    can be discarded or reset. As a limitation, the current implementation only
    accepts byte streams; processing of character streams is for further study.
diff --git a/Doc/library/xmlrpclib.rst b/Doc/library/xmlrpclib.rst
index 627a282..60fe579 100644
--- a/Doc/library/xmlrpclib.rst
+++ b/Doc/library/xmlrpclib.rst
@@ -434,11 +434,11 @@
    error.
 
 In the following example we're going to intentionally cause a :exc:`ProtocolError`
-by providing an URI that doesn't point to an XMLRPC server::
+by providing a URI that doesn't point to an XMLRPC server::
 
    import xmlrpclib
 
-   # create a ServerProxy with an URI that doesn't respond to XMLRPC requests
+   # create a ServerProxy with a URI that doesn't respond to XMLRPC requests
    proxy = xmlrpclib.ServerProxy("http://www.google.com/")
 
    try:
diff --git a/Include/stringobject.h b/Include/stringobject.h
index 18b5b41..12cc093 100644
--- a/Include/stringobject.h
+++ b/Include/stringobject.h
@@ -129,7 +129,7 @@
 /* Encodes a string object and returns the result as Python string
    object.   
    
-   If the codec returns an Unicode object, the object is converted
+   If the codec returns a Unicode object, the object is converted
    back to a string using the default encoding.
 
    DEPRECATED - use PyString_AsEncodedObject() instead. */
@@ -152,7 +152,7 @@
 /* Decodes a string object and returns the result as Python string
    object.  
    
-   If the codec returns an Unicode object, the object is converted
+   If the codec returns a Unicode object, the object is converted
    back to a string using the default encoding.
 
    DEPRECATED - use PyString_AsDecodedObject() instead. */
@@ -164,7 +164,7 @@
     );
 
 /* Provides access to the internal data buffer and size of a string
-   object or the default encoded version of an Unicode object. Passing
+   object or the default encoded version of a Unicode object. Passing
    NULL as *len parameter will force the string buffer to be
    0-terminated (passing a string with embedded NULL characters will
    cause an exception).  */
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index d15ebb8..9184eb1 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -513,7 +513,7 @@
     Py_ssize_t length           /* New length */
     );
 
-/* Coerce obj to an Unicode object and return a reference with
+/* Coerce obj to a Unicode object and return a reference with
    *incremented* refcount.
 
    Coercion is done in the following way:
@@ -536,7 +536,7 @@
     const char *errors          /* error handling */
     );
 
-/* Coerce obj to an Unicode object and return a reference with
+/* Coerce obj to a Unicode object and return a reference with
    *incremented* refcount.
 
    Unicode objects are passed back as-is (subclasses are converted to
diff --git a/Lib/heapq.py b/Lib/heapq.py
index 4b2c0c4..f8269e1 100644
--- a/Lib/heapq.py
+++ b/Lib/heapq.py
@@ -56,7 +56,7 @@
 
 
 In the tree above, each cell `k' is topping `2*k+1' and `2*k+2'.  In
-an usual binary tournament we see in sports, each cell is the winner
+a usual binary tournament we see in sports, each cell is the winner
 over the two cells it tops, and we can trace the winner down the tree
 to see all opponents s/he had.  However, in many computer applications
 of such tournaments, we do not need to trace the history of a winner.
diff --git a/Lib/ntpath.py b/Lib/ntpath.py
index 58951b9..0b85b0b 100644
--- a/Lib/ntpath.py
+++ b/Lib/ntpath.py
@@ -141,7 +141,7 @@
     Return a 2-tuple (unc, rest); either part may be empty.
     If unc is not empty, it has the form '//host/mount' (or similar
     using backslashes).  unc+rest is always the input path.
-    Paths containing drive letters never have an UNC part.
+    Paths containing drive letters never have a UNC part.
     """
     if p[1:2] == ':':
         return '', p # Drive letter present
@@ -227,7 +227,7 @@
 lexists = exists
 
 # Is a path a mount point?  Either a root (with or without drive letter)
-# or an UNC path with at most a / or \ after the mount point.
+# or a UNC path with at most a / or \ after the mount point.
 
 def ismount(path):
     """Test whether a path is a mount point (defined as root of drive)"""
diff --git a/Lib/os2emxpath.py b/Lib/os2emxpath.py
index 0b32d63..6691b7d 100644
--- a/Lib/os2emxpath.py
+++ b/Lib/os2emxpath.py
@@ -62,7 +62,7 @@
     Return a 2-tuple (unc, rest); either part may be empty.
     If unc is not empty, it has the form '//host/mount' (or similar
     using backslashes).  unc+rest is always the input path.
-    Paths containing drive letters never have an UNC part.
+    Paths containing drive letters never have a UNC part.
     """
     if p[1:2] == ':':
         return '', p # Drive letter present
@@ -105,7 +105,7 @@
 # Is a path a directory?
 
 # Is a path a mount point?  Either a root (with or without drive letter)
-# or an UNC path with at most a / or \ after the mount point.
+# or a UNC path with at most a / or \ after the mount point.
 
 def ismount(path):
     """Test whether a path is a mount point (defined as root of drive)"""
diff --git a/Lib/test/test_print.py b/Lib/test/test_print.py
index b726347..e8d9e66 100644
--- a/Lib/test/test_print.py
+++ b/Lib/test/test_print.py
@@ -107,7 +107,7 @@
         self.assertRaises(AttributeError, print, '', file='')
 
     def test_mixed_args(self):
-        # If an unicode arg is passed, sep and end should be unicode, too.
+        # If a unicode arg is passed, sep and end should be unicode, too.
         class Recorder(object):
 
             def __init__(self, must_be_unicode):
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index c8fc985..cc13409 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -150,7 +150,7 @@
         self.assertEqual(zlib.decompress(x), data)
 
     def test_incomplete_stream(self):
-        # An useful error message is given
+        # A useful error message is given
         x = zlib.compress(HAMLET_SCENE)
         self.assertRaisesRegexp(zlib.error,
             "Error -5 while decompressing data: incomplete or truncated stream",
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
index c6e3d39..cf6402f 100644
--- a/Lib/xml/etree/ElementTree.py
+++ b/Lib/xml/etree/ElementTree.py
@@ -574,7 +574,7 @@
 # @param text A string containing the QName value, in the form {uri}local,
 #     or, if the tag argument is given, the URI part of a QName.
 # @param tag Optional tag.  If given, the first argument is interpreted as
-#     an URI, and this argument is interpreted as a local name.
+#     a URI, and this argument is interpreted as a local name.
 # @return An opaque object, representing the QName.
 
 class QName(object):
diff --git a/Mac/Modules/icgluemodule.c b/Mac/Modules/icgluemodule.c
index 4d17bf7..3a47cd0 100644
--- a/Mac/Modules/icgluemodule.c
+++ b/Mac/Modules/icgluemodule.c
@@ -229,7 +229,7 @@
 
 
 static char ici_ICParseURL__doc__[] =
-"(hint, data, selStart, selEnd, handle)->selStart, selEnd; Find an URL, return in handle"
+"(hint, data, selStart, selEnd, handle)->selStart, selEnd; Find a URL, return in handle"
 ;
 
 static PyObject *
@@ -253,7 +253,7 @@
 
 
 static char ici_ICLaunchURL__doc__[] =
-"(hint, data, selStart, selEnd)->None; Find an URL and launch the correct app"
+"(hint, data, selStart, selEnd)->None; Find a URL and launch the correct app"
 ;
 
 static PyObject *
diff --git a/Misc/HISTORY b/Misc/HISTORY
index b9e74da..60635fb 100644
--- a/Misc/HISTORY
+++ b/Misc/HISTORY
@@ -8024,7 +8024,7 @@
 
 - There is a new Unicode companion to the PyObject_Str() API
   called PyObject_Unicode(). It behaves in the same way as the
-  former, but assures that the returned value is an Unicode object
+  former, but assures that the returned value is a Unicode object
   (applying the usual coercion if necessary).
 
 - The comparison operators support "rich comparison overloading" (PEP
diff --git a/Misc/NEWS b/Misc/NEWS
index cebb5a5..9288612 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -5992,7 +5992,7 @@
 - Issue #8211: Save/restore CFLAGS around AC_PROG_CC in configure.in, in case it
   is set.
 
-- Issue #1583863: An unicode subclass can now override the __unicode__ method
+- Issue #1583863: A unicode subclass can now override the __unicode__ method
 
 - Issue #6474: Make error message from passing an inadequate number of keyword
   arguments to a function correct.
@@ -6497,7 +6497,7 @@
   when the release file is empty.
 
 - Issue #7748: Since unicode values are supported for some metadata options in
-  Distutils, the DistributionMetadata get_* methods will now return an utf-8
+  Distutils, the DistributionMetadata get_* methods will now return a utf-8
   encoded string for them.  This ensures that the upload and register commands
   send the correct values to PyPI without any error.
 
@@ -8873,7 +8873,7 @@
 - Silence the DeprecationWarning raised when importing mimetools in
   BaseHTTPServer, cgi (and rfc822), httplib.
 
-- Issue #2776: fixed small issue when handling an URL with double slash
+- Issue #2776: fixed small issue when handling a URL with double slash
   after a 302 response in the case of not going through a proxy.
 
 - Issue #2676: in the email package, content-type parsing was hanging on
@@ -10205,7 +10205,7 @@
   ``object.__reduce_ex__()`` is called with an object that is faking
   its type.
 
-- Patch #1680015: Don't modify __slots__ tuple if it contains an
+- Patch #1680015: Don't modify __slots__ tuple if it contains a
   unicode name.
 
 - Patch #1444529: the builtin compile() now accepts keyword arguments.
diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index 0d16a69..6f628a5 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -2104,7 +2104,7 @@
         /* decode universal name */
 #if defined(Py_USING_UNICODE)
         /* inline makestring, to avoid duplicating the source string if
-           it's not an utf-8 string */
+           it's not a utf-8 string */
         p = PyString_AS_STRING(tag);
         if (checkstring(p, size)) {
             value = PyUnicode_DecodeUTF8(p, size, "strict");
diff --git a/Modules/_heapqmodule.c b/Modules/_heapqmodule.c
index be301a6..5b0ef69 100644
--- a/Modules/_heapqmodule.c
+++ b/Modules/_heapqmodule.c
@@ -619,7 +619,7 @@
 \n\
 \n\
 In the tree above, each cell `k' is topping `2*k+1' and `2*k+2'.  In\n\
-an usual binary tournament we see in sports, each cell is the winner\n\
+a usual binary tournament we see in sports, each cell is the winner\n\
 over the two cells it tops, and we can trace the winner down the tree\n\
 to see all opponents s/he had.  However, in many computer applications\n\
 of such tournaments, we do not need to trace the history of a winner.\n\
diff --git a/Objects/codeobject.c b/Objects/codeobject.c
index 7e74607..c104098 100644
--- a/Objects/codeobject.c
+++ b/Objects/codeobject.c
@@ -492,7 +492,7 @@
         return key;
     }
     else {
-        /* for other types, use the object identifier as an unique identifier
+        /* for other types, use the object identifier as a unique identifier
          * to ensure that they are seen as unequal. */
         PyObject *obj_id = PyLong_FromVoidPtr(op);
         if (obj_id == NULL)
diff --git a/Python/codecs.c b/Python/codecs.c
index d672362..dbecd1d 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -334,7 +334,7 @@
     return codec_getstreamcodec(encoding, stream, errors, 3);
 }
 
-/* Encode an object (e.g. an Unicode object) using the given encoding
+/* Encode an object (e.g. a Unicode object) using the given encoding
    and return the resulting encoded object (usually a Python string).
 
    errors is passed to the encoder factory as argument if non-NULL. */
@@ -379,7 +379,7 @@
 }
 
 /* Decode an object (usually a Python string) using the given encoding
-   and return an equivalent object (e.g. an Unicode object).
+   and return an equivalent object (e.g. a Unicode object).
 
    errors is passed to the decoder factory as argument if non-NULL. */