diff --git a/Doc/includes/sqlite3/shared_cache.py b/Doc/includes/sqlite3/shared_cache.py
index bf1d7b4..30e71c9 100644
--- a/Doc/includes/sqlite3/shared_cache.py
+++ b/Doc/includes/sqlite3/shared_cache.py
@@ -1,6 +1,6 @@
 import sqlite3
 
 # The shared cache is only available in SQLite versions 3.3.3 or later
-# See the SQLite documentaton for details.
+# See the SQLite documentation for details.
 
 sqlite3.enable_shared_cache(True)
diff --git a/Doc/library/imaplib.rst b/Doc/library/imaplib.rst
index fd09041..95bdc70 100644
--- a/Doc/library/imaplib.rst
+++ b/Doc/library/imaplib.rst
@@ -104,7 +104,7 @@
    Convert *date_time* to an IMAP4 ``INTERNALDATE`` representation.  The
    return value is a string in the form: ``"DD-Mmm-YYYY HH:MM:SS
    +HHMM"`` (including double-quotes).  The *date_time* argument can be a
-   number (int or float) represening seconds since epoch (as returned
+   number (int or float) representing seconds since epoch (as returned
    by :func:`time.time`), a 9-tuple representing local time (as returned by
    :func:`time.localtime`), or a double-quoted string.  In the last case, it
    is assumed to already be in the correct format.
diff --git a/Include/abstract.h b/Include/abstract.h
index e4ce5ad..a377423 100644
--- a/Include/abstract.h
+++ b/Include/abstract.h
@@ -509,7 +509,7 @@
       arbitrary data.
 
       0 is returned on success.  buffer and buffer_len are only
-      set in case no error occurrs.  Otherwise, -1 is returned and
+      set in case no error occurs.  Otherwise, -1 is returned and
       an exception set.
 
        */
@@ -524,7 +524,7 @@
       writeable memory location in buffer of size buffer_len.
 
       0 is returned on success.  buffer and buffer_len are only
-      set in case no error occurrs. Otherwise, -1 is returned and
+      set in case no error occurs. Otherwise, -1 is returned and
       an exception set.
 
        */
diff --git a/Include/pymacconfig.h b/Include/pymacconfig.h
index 6d4a971..24e7b8d 100644
--- a/Include/pymacconfig.h
+++ b/Include/pymacconfig.h
@@ -61,7 +61,7 @@
 #    endif
 
 #    if defined(__LP64__)
-     /* MacOSX 10.4 (the first release to suppport 64-bit code
+     /* MacOSX 10.4 (the first release to support 64-bit code
       * at all) only supports 64-bit in the UNIX layer.
       * Therefore surpress the toolbox-glue in 64-bit mode.
       */
diff --git a/Lib/SimpleXMLRPCServer.py b/Lib/SimpleXMLRPCServer.py
index b2a5610..4cdc154 100644
--- a/Lib/SimpleXMLRPCServer.py
+++ b/Lib/SimpleXMLRPCServer.py
@@ -246,7 +246,7 @@
         marshalled data. For backwards compatibility, a dispatch
         function can be provided as an argument (see comment in
         SimpleXMLRPCRequestHandler.do_POST) but overriding the
-        existing method through subclassing is the prefered means
+        existing method through subclassing is the preferred means
         of changing method dispatch behavior.
         """
 
diff --git a/Lib/csv.py b/Lib/csv.py
index 1df5062..984ed7e 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -281,7 +281,7 @@
         an all or nothing approach, so we allow for small variations in this
         number.
           1) build a table of the frequency of each character on every line.
-          2) build a table of freqencies of this frequency (meta-frequency?),
+          2) build a table of frequencies of this frequency (meta-frequency?),
              e.g.  'x occurred 5 times in 10 rows, 6 times in 1000 rows,
              7 times in 2 rows'
           3) use the mode of the meta-frequency to determine the /expected/
diff --git a/Lib/ctypes/test/test_arrays.py b/Lib/ctypes/test/test_arrays.py
index 433a1ff..925f8bf 100644
--- a/Lib/ctypes/test/test_arrays.py
+++ b/Lib/ctypes/test/test_arrays.py
@@ -37,7 +37,7 @@
             values = [ia[i] for i in range(len(init))]
             self.assertEqual(values, [0] * len(init))
 
-            # Too many in itializers should be caught
+            # Too many initializers should be caught
             self.assertRaises(IndexError, int_array, *range(alen*2))
 
         CharArray = ARRAY(c_char, 3)
diff --git a/Lib/ctypes/test/test_init.py b/Lib/ctypes/test/test_init.py
index 953a145..82bd1f9 100644
--- a/Lib/ctypes/test/test_init.py
+++ b/Lib/ctypes/test/test_init.py
@@ -27,7 +27,7 @@
         self.assertEqual((y.x.a, y.x.b), (0, 0))
         self.assertEqual(y.x.new_was_called, False)
 
-        # But explicitely creating an X structure calls __new__ and __init__, of course.
+        # But explicitly creating an X structure calls __new__ and __init__, of course.
         x = X()
         self.assertEqual((x.a, x.b), (9, 12))
         self.assertEqual(x.new_was_called, True)
diff --git a/Lib/ctypes/test/test_numbers.py b/Lib/ctypes/test/test_numbers.py
index b5185bf..2267693 100644
--- a/Lib/ctypes/test/test_numbers.py
+++ b/Lib/ctypes/test/test_numbers.py
@@ -157,7 +157,7 @@
     def test_int_from_address(self):
         from array import array
         for t in signed_types + unsigned_types:
-            # the array module doesn't suppport all format codes
+            # the array module doesn't support all format codes
             # (no 'q' or 'Q')
             try:
                 array(t._type_)
diff --git a/Lib/ctypes/test/test_win32.py b/Lib/ctypes/test/test_win32.py
index 5dedd9f..2534a74 100644
--- a/Lib/ctypes/test/test_win32.py
+++ b/Lib/ctypes/test/test_win32.py
@@ -17,7 +17,7 @@
             # ValueError: Procedure probably called with not enough arguments (4 bytes missing)
             self.assertRaises(ValueError, IsWindow)
 
-            # This one should succeeed...
+            # This one should succeed...
             self.assertEqual(0, IsWindow(0))
 
             # ValueError: Procedure probably called with too many arguments (8 bytes in excess)
diff --git a/Lib/difflib.py b/Lib/difflib.py
index e5910bc..b1f92d6 100644
--- a/Lib/difflib.py
+++ b/Lib/difflib.py
@@ -1714,7 +1714,7 @@
             line = line.replace(' ','\0')
             # expand tabs into spaces
             line = line.expandtabs(self._tabsize)
-            # relace spaces from expanded tabs back into tab characters
+            # replace spaces from expanded tabs back into tab characters
             # (we'll replace them with markup after we do differencing)
             line = line.replace(' ','\t')
             return line.replace('\0',' ').rstrip('\n')
diff --git a/Lib/distutils/cmd.py b/Lib/distutils/cmd.py
index dc40c14..9ad5657 100644
--- a/Lib/distutils/cmd.py
+++ b/Lib/distutils/cmd.py
@@ -377,7 +377,7 @@
             dry_run=self.dry_run)
 
     def move_file (self, src, dst, level=1):
-        """Move a file respectin dry-run flag."""
+        """Move a file respecting dry-run flag."""
         return file_util.move_file(src, dst, dry_run = self.dry_run)
 
     def spawn (self, cmd, search_path=1, level=1):
diff --git a/Lib/distutils/tests/test_clean.py b/Lib/distutils/tests/test_clean.py
index 2d1610d..7b988f7 100644
--- a/Lib/distutils/tests/test_clean.py
+++ b/Lib/distutils/tests/test_clean.py
@@ -39,7 +39,7 @@
             self.assertTrue(not os.path.exists(path),
                          '%s was not removed' % path)
 
-        # let's run the command again (should spit warnings but suceed)
+        # let's run the command again (should spit warnings but succeed)
         cmd.all = 1
         cmd.ensure_finalized()
         cmd.run()
diff --git a/Lib/distutils/tests/test_sdist.py b/Lib/distutils/tests/test_sdist.py
index ab8c3d9..54a32b8 100644
--- a/Lib/distutils/tests/test_sdist.py
+++ b/Lib/distutils/tests/test_sdist.py
@@ -370,7 +370,7 @@
         # adding a file
         self.write_file((self.tmp_dir, 'somecode', 'doc2.txt'), '#')
 
-        # make sure build_py is reinitinialized, like a fresh run
+        # make sure build_py is reinitialized, like a fresh run
         build_py = dist.get_command_obj('build_py')
         build_py.finalized = False
         build_py.ensure_finalized()
diff --git a/Lib/doctest.py b/Lib/doctest.py
index 5565aab..622f68d 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -1217,7 +1217,7 @@
         # Process each example.
         for examplenum, example in enumerate(test.examples):
 
-            # If REPORT_ONLY_FIRST_FAILURE is set, then supress
+            # If REPORT_ONLY_FIRST_FAILURE is set, then suppress
             # reporting after the first failure.
             quiet = (self.optionflags & REPORT_ONLY_FIRST_FAILURE and
                      failures > 0)
@@ -2186,7 +2186,7 @@
            caller can catch the errors and initiate post-mortem debugging.
 
            The DocTestCase provides a debug method that raises
-           UnexpectedException errors if there is an unexepcted
+           UnexpectedException errors if there is an unexpected
            exception:
 
              >>> test = DocTestParser().get_doctest('>>> raise KeyError\n42',
diff --git a/Lib/email/header.py b/Lib/email/header.py
index 702adf1..2cf870f 100644
--- a/Lib/email/header.py
+++ b/Lib/email/header.py
@@ -47,7 +47,7 @@
 # For use with .match()
 fcre = re.compile(r'[\041-\176]+:$')
 
-# Find a header embeded in a putative header value.  Used to check for
+# Find a header embedded in a putative header value.  Used to check for
 # header injection attack.
 _embeded_header = re.compile(r'\n[^ \t]+:')
 
diff --git a/Lib/idlelib/FormatParagraph.py b/Lib/idlelib/FormatParagraph.py
index 02f96d4..6a5f9b5 100644
--- a/Lib/idlelib/FormatParagraph.py
+++ b/Lib/idlelib/FormatParagraph.py
@@ -54,7 +54,7 @@
             # If the block ends in a \n, we dont want the comment
             # prefix inserted after it. (Im not sure it makes sense to
             # reformat a comment block that isnt made of complete
-            # lines, but whatever!)  Can't think of a clean soltution,
+            # lines, but whatever!)  Can't think of a clean solution,
             # so we hack away
             block_suffix = ""
             if not newdata[-1]:
diff --git a/Lib/idlelib/extend.txt b/Lib/idlelib/extend.txt
index f5fb3e0..165e044 100644
--- a/Lib/idlelib/extend.txt
+++ b/Lib/idlelib/extend.txt
@@ -18,7 +18,7 @@
 
 An IDLE extension class is instantiated with a single argument,
 `editwin', an EditorWindow instance. The extension cannot assume much
-about this argument, but it is guarateed to have the following instance
+about this argument, but it is guaranteed to have the following instance
 variables:
 
     text	a Text instance (a widget)
diff --git a/Lib/idlelib/macosxSupport.py b/Lib/idlelib/macosxSupport.py
index 722ac54..4be60a3 100644
--- a/Lib/idlelib/macosxSupport.py
+++ b/Lib/idlelib/macosxSupport.py
@@ -53,8 +53,8 @@
 
 def addOpenEventSupport(root, flist):
     """
-    This ensures that the application will respont to open AppleEvents, which
-    makes is feaseable to use IDLE as the default application for python files.
+    This ensures that the application will respond to open AppleEvents, which
+    makes is feasible to use IDLE as the default application for python files.
     """
     def doOpenFile(*args):
         for fn in args:
diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index fdae445..5693191 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -1394,7 +1394,7 @@
     """Convert date_time to IMAP4 INTERNALDATE representation.
 
     Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'.  The
-    date_time argument can be a number (int or float) represening
+    date_time argument can be a number (int or float) representing
     seconds since epoch (as returned by time.time()), a 9-tuple
     representing local time (as returned by time.localtime()), or a
     double-quoted string.  In the last case, it is assumed to already
diff --git a/Lib/lib-tk/Tix.py b/Lib/lib-tk/Tix.py
index 48d6044..210b7d2 100644
--- a/Lib/lib-tk/Tix.py
+++ b/Lib/lib-tk/Tix.py
@@ -171,7 +171,7 @@
         return self.tk.call('tix', 'getimage', name)
 
     def tix_option_get(self, name):
-        """Gets  the options  manitained  by  the  Tix
+        """Gets  the options  maintained  by  the  Tix
         scheme mechanism. Available options include:
 
             active_bg       active_fg      bg
@@ -576,7 +576,7 @@
 
 class ComboBox(TixWidget):
     """ComboBox - an Entry field with a dropdown menu. The user can select a
-    choice by either typing in the entry subwdget or selecting from the
+    choice by either typing in the entry subwidget or selecting from the
     listbox subwidget.
 
     Subwidget       Class
@@ -869,7 +869,7 @@
     """HList - Hierarchy display  widget can be used to display any data
     that have a hierarchical structure, for example, file system directory
     trees. The list entries are indented and connected by branch lines
-    according to their places in the hierachy.
+    according to their places in the hierarchy.
 
     Subwidgets - None"""
 
@@ -1520,7 +1520,7 @@
         self.tk.call(self._w, 'selection', 'set', first, last)
 
 class Tree(TixWidget):
-    """Tree - The tixTree widget can be used to display hierachical
+    """Tree - The tixTree widget can be used to display hierarchical
     data in a tree form. The user can adjust
     the view of the tree by opening or closing parts of the tree."""
 
diff --git a/Lib/lib-tk/test/test_ttk/test_functions.py b/Lib/lib-tk/test/test_ttk/test_functions.py
index f8800ce..9de25a4 100644
--- a/Lib/lib-tk/test/test_ttk/test_functions.py
+++ b/Lib/lib-tk/test/test_ttk/test_functions.py
@@ -136,7 +136,7 @@
         # minimum acceptable for image type
         self.assertEqual(ttk._format_elemcreate('image', False, 'test'),
             ("test ", ()))
-        # specifiyng a state spec
+        # specifying a state spec
         self.assertEqual(ttk._format_elemcreate('image', False, 'test',
             ('', 'a')), ("test {} a", ()))
         # state spec with multiple states
diff --git a/Lib/lib-tk/ttk.py b/Lib/lib-tk/ttk.py
index d076266..2fd513a 100644
--- a/Lib/lib-tk/ttk.py
+++ b/Lib/lib-tk/ttk.py
@@ -707,7 +707,7 @@
             textvariable, values, width
         """
         # The "values" option may need special formatting, so leave to
-        # _format_optdict the responsability to format it
+        # _format_optdict the responsibility to format it
         if "values" in kw:
             kw["values"] = _format_optdict({'v': kw["values"]})[1]
 
diff --git a/Lib/lib-tk/turtle.py b/Lib/lib-tk/turtle.py
index 20d6e90..a003433 100644
--- a/Lib/lib-tk/turtle.py
+++ b/Lib/lib-tk/turtle.py
@@ -1409,7 +1409,7 @@
         Optional arguments:
         canvwidth -- positive integer, new width of canvas in pixels
         canvheight --  positive integer, new height of canvas in pixels
-        bg -- colorstring or color-tupel, new backgroundcolor
+        bg -- colorstring or color-tuple, new backgroundcolor
         If no arguments are given, return current (canvaswidth, canvasheight)
 
         Do not alter the drawing window. To observe hidden parts of
@@ -3079,9 +3079,9 @@
                                                fill="", width=ps)
         # Turtle now at position old,
         self._position = old
-        ##  if undo is done during crating a polygon, the last vertex
-        ##  will be deleted. if the polygon is entirel deleted,
-        ##  creatigPoly will be set to False.
+        ##  if undo is done during creating a polygon, the last vertex
+        ##  will be deleted. if the polygon is entirely deleted,
+        ##  creatingPoly will be set to False.
         ##  Polygons created before the last one will not be affected by undo()
         if self._creatingPoly:
             if len(self._poly) > 0:
@@ -3691,7 +3691,7 @@
 
 
 class Turtle(RawTurtle):
-    """RawTurtle auto-crating (scrolled) canvas.
+    """RawTurtle auto-creating (scrolled) canvas.
 
     When a Turtle object is created or a function derived from some
     Turtle method is called a TurtleScreen object is automatically created.
@@ -3731,7 +3731,7 @@
     filename -- a string, used as filename
                 default value is turtle_docstringdict
 
-    Has to be called explicitely, (not used by the turtle-graphics classes)
+    Has to be called explicitly, (not used by the turtle-graphics classes)
     The docstring dictionary will be written to the Python script <filname>.py
     It is intended to serve as a template for translation of the docstrings
     into different languages.
diff --git a/Lib/lib2to3/fixes/fix_metaclass.py b/Lib/lib2to3/fixes/fix_metaclass.py
index f403fd6..c86fbea 100644
--- a/Lib/lib2to3/fixes/fix_metaclass.py
+++ b/Lib/lib2to3/fixes/fix_metaclass.py
@@ -48,7 +48,7 @@
     """
     for node in cls_node.children:
         if node.type == syms.suite:
-            # already in the prefered format, do nothing
+            # already in the preferred format, do nothing
             return
 
     # !%@#! oneliners have no suite node, we have to fake one up
diff --git a/Lib/lib2to3/pgen2/conv.py b/Lib/lib2to3/pgen2/conv.py
index 5d788a1..28fbb0b 100644
--- a/Lib/lib2to3/pgen2/conv.py
+++ b/Lib/lib2to3/pgen2/conv.py
@@ -51,7 +51,7 @@
         self.finish_off()
 
     def parse_graminit_h(self, filename):
-        """Parse the .h file writen by pgen.  (Internal)
+        """Parse the .h file written by pgen.  (Internal)
 
         This file is a sequence of #define statements defining the
         nonterminals of the grammar as numbers.  We build two tables
@@ -82,7 +82,7 @@
         return True
 
     def parse_graminit_c(self, filename):
-        """Parse the .c file writen by pgen.  (Internal)
+        """Parse the .c file written by pgen.  (Internal)
 
         The file looks as follows.  The first two lines are always this:
 
diff --git a/Lib/lib2to3/pytree.py b/Lib/lib2to3/pytree.py
index c2fa800..179caca 100644
--- a/Lib/lib2to3/pytree.py
+++ b/Lib/lib2to3/pytree.py
@@ -658,8 +658,8 @@
             content: optional sequence of subsequences of patterns;
                      if absent, matches one node;
                      if present, each subsequence is an alternative [*]
-            min: optinal minumum number of times to match, default 0
-            max: optional maximum number of times tro match, default HUGE
+            min: optional minimum number of times to match, default 0
+            max: optional maximum number of times to match, default HUGE
             name: optional name assigned to this match
 
         [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
diff --git a/Lib/lib2to3/tests/data/py2_test_grammar.py b/Lib/lib2to3/tests/data/py2_test_grammar.py
index 17f9f4c..b5a4137 100644
--- a/Lib/lib2to3/tests/data/py2_test_grammar.py
+++ b/Lib/lib2to3/tests/data/py2_test_grammar.py
@@ -316,7 +316,7 @@
         ### simple_stmt: small_stmt (';' small_stmt)* [';']
         x = 1; pass; del x
         def foo():
-            # verify statments that end with semi-colons
+            # verify statements that end with semi-colons
             x = 1; pass; del x;
         foo()
 
diff --git a/Lib/lib2to3/tests/data/py3_test_grammar.py b/Lib/lib2to3/tests/data/py3_test_grammar.py
index 977f0b8..c0bf7f2 100644
--- a/Lib/lib2to3/tests/data/py3_test_grammar.py
+++ b/Lib/lib2to3/tests/data/py3_test_grammar.py
@@ -356,7 +356,7 @@
         ### simple_stmt: small_stmt (';' small_stmt)* [';']
         x = 1; pass; del x
         def foo():
-            # verify statments that end with semi-colons
+            # verify statements that end with semi-colons
             x = 1; pass; del x;
         foo()
 
diff --git a/Lib/ntpath.py b/Lib/ntpath.py
index 14911d0..765e1bf 100644
--- a/Lib/ntpath.py
+++ b/Lib/ntpath.py
@@ -310,7 +310,7 @@
 #       - $varname is accepted.
 #       - %varname% is accepted.
 #       - varnames can be made out of letters, digits and the characters '_-'
-#         (though is not verifed in the ${varname} and %varname% cases)
+#         (though is not verified in the ${varname} and %varname% cases)
 # XXX With COMMAND.COM you can use any characters in a variable name,
 # XXX except '^|<>='.
 
diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index cfeeecb..d717728 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -1370,7 +1370,7 @@
       proto=0,
       doc="""Read an object from the memo and push it on the stack.
 
-      The index of the memo object to push is given by the newline-teriminated
+      The index of the memo object to push is given by the newline-terminated
       decimal string following.  BINGET and LONG_BINGET are space-optimized
       versions.
       """),
diff --git a/Lib/platform.py b/Lib/platform.py
index 0f24553..3181303 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -503,7 +503,7 @@
             info = pipe.read()
             if pipe.close():
                 raise os.error,'command failed'
-            # XXX How can I supress shell errors from being written
+            # XXX How can I suppress shell errors from being written
             #     to stderr ?
         except os.error,why:
             #print 'Command %s failed: %s' % (cmd,why)
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 2ecde0b..c8427d1 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -883,7 +883,7 @@
             except pywintypes.error, e:
                 # Translate pywintypes.error to WindowsError, which is
                 # a subclass of OSError.  FIXME: We should really
-                # translate errno using _sys_errlist (or simliar), but
+                # translate errno using _sys_errlist (or similar), but
                 # how can this be done from Python?
                 raise WindowsError(*e.args)
             finally:
diff --git a/Lib/test/pyclbr_input.py b/Lib/test/pyclbr_input.py
index 8efc9de..19ccd62 100644
--- a/Lib/test/pyclbr_input.py
+++ b/Lib/test/pyclbr_input.py
@@ -19,7 +19,7 @@
 
     # XXX: This causes test_pyclbr.py to fail, but only because the
     #      introspection-based is_method() code in the test can't
-    #      distinguish between this and a geniune method function like m().
+    #      distinguish between this and a genuine method function like m().
     #      The pyclbr.py module gets this right as it parses the text.
     #
     #f = f
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index d8fb2d5..1d35a6a 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -693,7 +693,7 @@
         # provide too much opportunity for insane things to happen.
         # We don't want them in the interned dict and if they aren't
         # actually interned, we don't want to create the appearance
-        # that they are by allowing intern() to succeeed.
+        # that they are by allowing intern() to succeed.
         class S(str):
             def __hash__(self):
                 return 123
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index 7c25923..7dec2de 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -86,7 +86,7 @@
                 context.event.set()
 
     def test_pendingcalls_non_threaded(self):
-        #again, just using the main thread, likely they will all be dispathced at
+        #again, just using the main thread, likely they will all be dispatched at
         #once.  It is ok to ask for too many, because we loop until we find a slot.
         #the loop can be interrupted to dispatch.
         #there are only 32 dispatch slots, so we go for twice that!
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 15188db..1a86353 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -3108,7 +3108,7 @@
             self.assertEqual(dt, there_and_back)
 
         # Because we have a redundant spelling when DST begins, there is
-        # (unforunately) an hour when DST ends that can't be spelled at all in
+        # (unfortunately) an hour when DST ends that can't be spelled at all in
         # local time.  When DST ends, the clock jumps from 1:59 back to 1:00
         # again.  The hour 1:MM DST has no spelling then:  1:MM is taken to be
         # standard time.  1:MM DST == 0:MM EST, but 0:MM is taken to be
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index dc21777..a011b2f 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -231,7 +231,7 @@
                 try:
                     t = self.eval_line(line)
                 except DecimalException as exception:
-                    #Exception raised where there shoudn't have been one.
+                    #Exception raised where there shouldn't have been one.
                     self.fail('Exception "'+exception.__class__.__name__ + '" raised on line '+line)
 
         return
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 7d85641..b5e86fb 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4282,7 +4282,7 @@
         except TypeError:
             pass
         else:
-            self.fail("Carlo Verre __setattr__ suceeded!")
+            self.fail("Carlo Verre __setattr__ succeeded!")
         try:
             object.__delattr__(str, "lower")
         except TypeError:
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index c027acd..df33e70 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -1292,7 +1292,7 @@
         ?     +              ++    ^
     TestResults(failed=1, attempted=1)
 
-The REPORT_ONLY_FIRST_FAILURE supresses result output after the first
+The REPORT_ONLY_FIRST_FAILURE suppresses result output after the first
 failing example:
 
     >>> def f(x):
@@ -1322,7 +1322,7 @@
         2
     TestResults(failed=3, attempted=5)
 
-However, output from `report_start` is not supressed:
+However, output from `report_start` is not suppressed:
 
     >>> doctest.DocTestRunner(verbose=True, optionflags=flags).run(test)
     ... # doctest: +ELLIPSIS
@@ -2334,7 +2334,7 @@
     TestResults(failed=0, attempted=2)
     >>> doctest.master = None  # Reset master.
 
-Verbosity can be increased with the optional `verbose` paremter:
+Verbosity can be increased with the optional `verbose` parameter:
 
     >>> doctest.testfile('test_doctest.txt', globs=globs, verbose=True)
     Trying:
@@ -2371,7 +2371,7 @@
     TestResults(failed=1, attempted=2)
     >>> doctest.master = None  # Reset master.
 
-The summary report may be supressed with the optional `report`
+The summary report may be suppressed with the optional `report`
 parameter:
 
     >>> doctest.testfile('test_doctest.txt', report=False)
diff --git a/Lib/test/test_extcall.py b/Lib/test/test_extcall.py
index 950ac28..80e09a0 100644
--- a/Lib/test/test_extcall.py
+++ b/Lib/test/test_extcall.py
@@ -236,7 +236,7 @@
     TypeError: unbound method method() must be called with Foo instance as \
 first argument (got int instance instead)
 
-A PyCFunction that takes only positional parameters shoud allow an
+A PyCFunction that takes only positional parameters should allow an
 empty keyword dictionary to pass without a complaint, but raise a
 TypeError if te dictionary is not empty
 
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index e16be06..d9cac74 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -56,7 +56,7 @@
     def test_float_with_comma(self):
         # set locale to something that doesn't use '.' for the decimal point
         # float must not accept the locale specific decimal point but
-        # it still has to accept the normal python syntac
+        # it still has to accept the normal python syntax
         import locale
         if not locale.localeconv()['decimal_point'] == ',':
             return
@@ -158,7 +158,7 @@
     def assertEqualAndEqualSign(self, a, b):
         # fail unless a == b and a and b have the same sign bit;
         # the only difference from assertEqual is that this test
-        # distingishes -0.0 and 0.0.
+        # distinguishes -0.0 and 0.0.
         self.assertEqual((a, copysign(1.0, a)), (b, copysign(1.0, b)))
 
     @requires_IEEE_754
diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py
index 084f590..137ac23 100644
--- a/Lib/test/test_grammar.py
+++ b/Lib/test/test_grammar.py
@@ -314,7 +314,7 @@
         ### simple_stmt: small_stmt (';' small_stmt)* [';']
         x = 1; pass; del x
         def foo():
-            # verify statments that end with semi-colons
+            # verify statements that end with semi-colons
             x = 1; pass; del x;
         foo()
 
diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
index cc9b93c..3de0923 100644
--- a/Lib/test/test_httpservers.py
+++ b/Lib/test/test_httpservers.py
@@ -87,7 +87,7 @@
         return self.connection.getresponse()
 
 class BaseHTTPRequestHandlerTestCase(unittest.TestCase):
-    """Test the functionaility of the BaseHTTPServer focussing on
+    """Test the functionality of the BaseHTTPServer focussing on
     BaseHTTPRequestHandler.
     """
 
diff --git a/Lib/test/test_iterlen.py b/Lib/test/test_iterlen.py
index ab5466e..88f43c7 100644
--- a/Lib/test/test_iterlen.py
+++ b/Lib/test/test_iterlen.py
@@ -20,11 +20,11 @@
 
 Some containers become temporarily immutable during iteration.  This includes
 dicts, sets, and collections.deque.  Their implementation is equally simple
-though they need to permantently set their length to zero whenever there is
+though they need to permanently set their length to zero whenever there is
 an attempt to iterate after a length mutation.
 
 The situation slightly more involved whenever an object allows length mutation
-during iteration.  Lists and sequence iterators are dynanamically updatable.
+during iteration.  Lists and sequence iterators are dynamically updatable.
 So, if a list is extended during iteration, the iterator will continue through
 the new items.  If it shrinks to a point before the most recent iteration,
 then no further items are available and the length is reported at zero.
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index e416755..97feb7b 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -1475,7 +1475,7 @@
 ...     return chain(iterable, repeat(None))
 
 >>> def ncycles(iterable, n):
-...     "Returns the seqeuence elements n times"
+...     "Returns the sequence elements n times"
 ...     return chain(*repeat(iterable, n))
 
 >>> def dotproduct(vec1, vec2):
diff --git a/Lib/test/test_marshal.py b/Lib/test/test_marshal.py
index 10a5161..744f93c 100644
--- a/Lib/test/test_marshal.py
+++ b/Lib/test/test_marshal.py
@@ -252,7 +252,7 @@
         #   >>> type(loads(dumps(Int())))
         #   <type 'int'>
         for typ in (int, long, float, complex, tuple, list, dict, set, frozenset):
-            # Note: str and unicode sublclasses are not tested because they get handled
+            # Note: str and unicode subclasses are not tested because they get handled
             # by marshal's routines for objects supporting the buffer API.
             subtyp = type('subtyp', (typ,), {})
             self.assertRaises(ValueError, marshal.dumps, subtyp())
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 973d1ab..ac4475e 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -780,7 +780,7 @@
 
         # the following tests have been commented out since they don't
         # really belong here:  the implementation of ** for floats is
-        # independent of the implemention of math.pow
+        # independent of the implementation of math.pow
         #self.assertEqual(1**NAN, 1)
         #self.assertEqual(1**INF, 1)
         #self.assertEqual(1**NINF, 1)
diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py
index c494759..68657aa 100644
--- a/Lib/test/test_memoryio.py
+++ b/Lib/test/test_memoryio.py
@@ -372,7 +372,7 @@
 
         # Pickle expects the class to be on the module level. Here we use a
         # little hack to allow the PickleTestMemIO class to derive from
-        # self.ioclass without having to define all combinations explictly on
+        # self.ioclass without having to define all combinations explicitly on
         # the module-level.
         import __main__
         PickleTestMemIO.__module__ = '__main__'
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index bc99054..62c6983 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -590,7 +590,7 @@
             m2.close()
             m1.close()
 
-            # Test differnt tag
+            # Test different tag
             m1 = mmap.mmap(-1, len(data1), tagname="foo")
             m1[:] = data1
             m2 = mmap.mmap(-1, len(data2), tagname="boo")
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 78b002e..c302460 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -18,7 +18,7 @@
 from test import test_support
 from StringIO import StringIO
 _multiprocessing = test_support.import_module('_multiprocessing')
-# import threading after _multiprocessing to raise a more revelant error
+# import threading after _multiprocessing to raise a more relevant error
 # message: "No module named _multiprocessing". _multiprocessing is not compiled
 # without thread support.
 import threading
@@ -780,7 +780,7 @@
         event = self.Event()
         wait = TimingWrapper(event.wait)
 
-        # Removed temporaily, due to API shear, this does not
+        # Removed temporarily, due to API shear, this does not
         # work with threading._Event objects. is_set == isSet
         self.assertEqual(event.is_set(), False)
 
@@ -1705,7 +1705,7 @@
 
         util.Finalize(None, conn.send, args=('STOP',), exitpriority=-100)
 
-        # call mutliprocessing's cleanup function then exit process without
+        # call multiprocessing's cleanup function then exit process without
         # garbage collecting locals
         util._exit_function()
         conn.close()
diff --git a/Lib/test/test_pep277.py b/Lib/test/test_pep277.py
index 6c8a25f..92b82d0 100644
--- a/Lib/test/test_pep277.py
+++ b/Lib/test/test_pep277.py
@@ -126,7 +126,7 @@
     # NFD (a variant of Unicode NFD form). Normalize the filename to NFC, NFKC,
     # NFKD in Python is useless, because darwin will normalize it later and so
     # open(), os.stat(), etc. don't raise any exception.
-    @unittest.skipIf(sys.platform == 'darwin', 'irrevelant test on Mac OS X')
+    @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
     def test_normalize(self):
         files = set(f for f in self.files if isinstance(f, unicode))
         others = set()
@@ -145,7 +145,7 @@
     # Skip the test on darwin, because darwin uses a normalization different
     # than Python NFD normalization: filenames are different even if we use
     # Python NFD normalization.
-    @unittest.skipIf(sys.platform == 'darwin', 'irrevelant test on Mac OS X')
+    @unittest.skipIf(sys.platform == 'darwin', 'irrelevant test on Mac OS X')
     def test_listdir(self):
         sf0 = set(self.files)
         f1 = os.listdir(test_support.TESTFN)
diff --git a/Lib/test/test_pkg.py b/Lib/test/test_pkg.py
index 6fb3f3d..5f1659b 100644
--- a/Lib/test/test_pkg.py
+++ b/Lib/test/test_pkg.py
@@ -54,7 +54,7 @@
         if self.root: # Only clean if the test was actually run
             cleanout(self.root)
 
-        # delete all modules concerning the tested hiearchy
+        # delete all modules concerning the tested hierarchy
         if self.pkgname:
             modules = [name for name in sys.modules
                        if self.pkgname in name.split('.')]
diff --git a/Lib/test/test_print.py b/Lib/test/test_print.py
index 757f90f..b726347 100644
--- a/Lib/test/test_print.py
+++ b/Lib/test/test_print.py
@@ -15,7 +15,7 @@
 # A dispatch table all 8 combinations of providing
 #  sep, end, and file
 # I use this machinery so that I'm not just passing default
-#  values to print, I'm eiher passing or not passing in the
+#  values to print, I'm either passing or not passing in the
 #  arguments
 dispatch = {
     (False, False, False):
diff --git a/Lib/test/test_strptime.py b/Lib/test/test_strptime.py
index a233b1c..63760c3 100644
--- a/Lib/test/test_strptime.py
+++ b/Lib/test/test_strptime.py
@@ -536,7 +536,7 @@
                 self.assertIsNot(first_time_re, second_time_re)
             # Possible test locale is not supported while initial locale is.
             # If this is the case just suppress the exception and fall-through
-            # to the reseting to the original locale.
+            # to the resetting to the original locale.
             except locale.Error:
                 pass
         # Make sure we don't trample on the locale setting once we leave the
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index ed48379..7994fe6 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -266,7 +266,7 @@
 
 Test continue in finally in weird combinations.
 
-continue in for loop under finally shouuld be ok.
+continue in for loop under finally should be ok.
 
     >>> def test():
     ...     try:
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 6f174a5..0062634 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -559,7 +559,7 @@
             # This acquires the lock and then waits until the child has forked
             # before returning, which will release the lock soon after.  If
             # someone else tries to fix this test case by acquiring this lock
-            # before forking instead of reseting it, the test case will
+            # before forking instead of resetting it, the test case will
             # deadlock when it shouldn't.
             condition = w._block
             orig_acquire = condition.acquire
diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index 7a982f1..2292ad6 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -205,7 +205,7 @@
             (self.my_py_filename, firstlineno + 4): 1,
         }
 
-        # When used through 'run', some other spurios counts are produced, like
+        # When used through 'run', some other spurious counts are produced, like
         # the settrace of threading, which we ignore, just making sure that the
         # counts fo traced_func_loop were right.
         #
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index c6e24d6..a826bb6 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -641,7 +641,7 @@
 
 # Just commented them out.
 # Can't really tell why keep failing in windows and sparc.
-# Everywhere else they work ok, but on those machines, someteimes
+# Everywhere else they work ok, but on those machines, sometimes
 # fail in one of the tests, sometimes in other. I have a linux, and
 # the tests go ok.
 # If anybody has one of the problematic enviroments, please help!
diff --git a/Lib/test/test_warnings.py b/Lib/test/test_warnings.py
index 1c2c0c2..5c4fa59 100644
--- a/Lib/test/test_warnings.py
+++ b/Lib/test/test_warnings.py
@@ -320,7 +320,7 @@
             sys.argv = argv
 
     def test_warn_explicit_type_errors(self):
-        # warn_explicit() shoud error out gracefully if it is given objects
+        # warn_explicit() should error out gracefully if it is given objects
         # of the wrong types.
         # lineno is expected to be an integer.
         self.assertRaises(TypeError, self.module.warn_explicit,
diff --git a/Lib/unittest/test/test_program.py b/Lib/unittest/test/test_program.py
index 263a3ab..45d9097 100644
--- a/Lib/unittest/test/test_program.py
+++ b/Lib/unittest/test/test_program.py
@@ -224,7 +224,7 @@
 
         program.runTests()
 
-        # If initialising raises a type error it should be retried
+        # If initializing raises a type error it should be retried
         # without the new keyword arguments
         self.assertEqual(FakeRunner.initArgs, {})
         self.assertEqual(FakeRunner.test, 'test')
diff --git a/Lib/xml/dom/minicompat.py b/Lib/xml/dom/minicompat.py
index d491fb6..de4cb4f 100644
--- a/Lib/xml/dom/minicompat.py
+++ b/Lib/xml/dom/minicompat.py
@@ -6,7 +6,7 @@
 #
 #   NodeList      -- lightest possible NodeList implementation
 #
-#   EmptyNodeList -- lightest possible NodeList that is guarateed to
+#   EmptyNodeList -- lightest possible NodeList that is guaranteed to
 #                    remain empty (immutable)
 #
 #   StringTypes   -- tuple of defined string types
diff --git a/Lib/xml/dom/minidom.py b/Lib/xml/dom/minidom.py
index 1712fd2..7518852 100644
--- a/Lib/xml/dom/minidom.py
+++ b/Lib/xml/dom/minidom.py
@@ -1875,7 +1875,7 @@
                     e._call_user_data_handler(operation, n, entity)
     else:
         # Note the cloning of Document and DocumentType nodes is
-        # implemenetation specific.  minidom handles those cases
+        # implementation specific.  minidom handles those cases
         # directly in the cloneNode() methods.
         raise xml.dom.NotSupportedErr("Cannot clone node %s" % repr(node))
 
diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index 0a0c0d6..ba92012 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -362,7 +362,7 @@
 
 def runCommand(commandline):
     """
-    Run a command and raise RuntimeError if it fails. Output is surpressed
+    Run a command and raise RuntimeError if it fails. Output is suppressed
     unless the command fails.
     """
     fd = os.popen(commandline, 'r')
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 4fc9d02..bb406c6 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -3427,7 +3427,7 @@
     /* XXX XXX This would allow to pass additional options.  For COM
        method *implementations*, we would probably want different
        behaviour than in 'normal' callback functions: return a HRESULT if
-       an exception occurrs in the callback, and print the traceback not
+       an exception occurs in the callback, and print the traceback not
        only on the console, but also to OutputDebugString() or something
        like that.
     */
diff --git a/Modules/_ctypes/callbacks.c b/Modules/_ctypes/callbacks.c
index 716a02f..2b54a85 100644
--- a/Modules/_ctypes/callbacks.c
+++ b/Modules/_ctypes/callbacks.c
@@ -256,7 +256,7 @@
             /* XXX XXX XX
                We have the problem that c_byte or c_short have dict->size of
                1 resp. 4, but these parameters are pushed as sizeof(int) bytes.
-               BTW, the same problem occurrs when they are pushed as parameters
+               BTW, the same problem occurs when they are pushed as parameters
             */
         } else if (dict) {
             /* Hm, shouldn't we use PyCData_AtAddress() or something like that instead? */
diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
index 5f62399..78c6dc0 100644
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -34,7 +34,7 @@
 
   4. _ctypes_callproc is then called with the 'callargs' tuple.  _ctypes_callproc first
   allocates two arrays.  The first is an array of 'struct argument' items, the
-  second array has 'void *' entried.
+  second array has 'void *' entries.
 
   5. If 'converters' are present (converters is a sequence of argtypes'
   from_param methods), for each item in 'callargs' converter is called and the
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index 572e7ff..aa9eaee 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -278,7 +278,7 @@
    __reduce__ by itself doesn't support getting kwargs in the unpickle
    operation so we define a __setstate__ that replaces all the information
    about the partial.  If we only replaced part of it someone would use
-   it as a hook to do stange things.
+   it as a hook to do strange things.
  */
 
 PyObject *
diff --git a/Modules/_io/iobase.c b/Modules/_io/iobase.c
index 56c007c..e129ca9 100644
--- a/Modules/_io/iobase.c
+++ b/Modules/_io/iobase.c
@@ -49,7 +49,7 @@
     "stream.\n"
     "\n"
     "IOBase also supports the :keyword:`with` statement. In this example,\n"
-    "fp is closed after the suite of the with statment is complete:\n"
+    "fp is closed after the suite of the with statement is complete:\n"
     "\n"
     "with open('spam.txt', 'r') as fp:\n"
     "    fp.write('Spam and eggs!')\n");
diff --git a/Modules/_io/stringio.c b/Modules/_io/stringio.c
index 1761a25..cf0f8b1 100644
--- a/Modules/_io/stringio.c
+++ b/Modules/_io/stringio.c
@@ -157,7 +157,7 @@
           0   lo      string_size                           hi
           |   |<---used--->|<----------available----------->|
           |   |            <--to pad-->|<---to write--->    |
-          0   buf                   positon
+          0   buf                   position
 
         */
         memset(self->buf + self->string_size, '\0',
diff --git a/Modules/_sqlite/connection.h b/Modules/_sqlite/connection.h
index 3fc5a70..ecc8d2b 100644
--- a/Modules/_sqlite/connection.h
+++ b/Modules/_sqlite/connection.h
@@ -55,7 +55,7 @@
     /* None for autocommit, otherwise a PyString with the isolation level */
     PyObject* isolation_level;
 
-    /* NULL for autocommit, otherwise a string with the BEGIN statment; will be
+    /* NULL for autocommit, otherwise a string with the BEGIN statement; will be
      * freed in connection destructor */
     char* begin_statement;
 
diff --git a/Modules/cmathmodule.c b/Modules/cmathmodule.c
index 825f7ad..0dc6bdb 100644
--- a/Modules/cmathmodule.c
+++ b/Modules/cmathmodule.c
@@ -23,7 +23,7 @@
 /*
    CM_LARGE_DOUBLE is used to avoid spurious overflow in the sqrt, log,
    inverse trig and inverse hyperbolic trig functions.  Its log is used in the
-   evaluation of exp, cos, cosh, sin, sinh, tan, and tanh to avoid unecessary
+   evaluation of exp, cos, cosh, sin, sinh, tan, and tanh to avoid unnecessary
    overflow.
  */
 
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index e4f6e63..d14910a 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -2329,7 +2329,7 @@
  * This is the guts of the recv() and recv_into() methods, which reads into a
  * char buffer.  If you have any inc/dec ref to do to the objects that contain
  * the buffer, do it in the caller.  This function returns the number of bytes
- * succesfully read.  If there was an error, it returns -1.  Note that it is
+ * successfully read.  If there was an error, it returns -1.  Note that it is
  * also possible that we return a number of bytes smaller than the request
  * bytes.
  */
@@ -2442,9 +2442,9 @@
     }
     if (outlen != recvlen) {
         /* We did not read as many bytes as we anticipated, resize the
-           string if possible and be succesful. */
+           string if possible and be successful. */
         if (_PyString_Resize(&buf, outlen) < 0)
-            /* Oopsy, not so succesful after all. */
+            /* Oopsy, not so successful after all. */
             return NULL;
     }
 
@@ -2527,7 +2527,7 @@
  * This is the guts of the recvfrom() and recvfrom_into() methods, which reads
  * into a char buffer.  If you have any inc/def ref to do to the objects that
  * contain the buffer, do it in the caller.  This function returns the number
- * of bytes succesfully read.  If there was an error, it returns -1.  Note
+ * of bytes successfully read.  If there was an error, it returns -1.  Note
  * that it is also possible that we return a number of bytes smaller than the
  * request bytes.
  *
@@ -2620,9 +2620,9 @@
 
     if (outlen != recvlen) {
         /* We did not read as many bytes as we anticipated, resize the
-           string if possible and be succesful. */
+           string if possible and be successful. */
         if (_PyString_Resize(&buf, outlen) < 0)
-            /* Oopsy, not so succesful after all. */
+            /* Oopsy, not so successful after all. */
             goto finally;
     }
 
@@ -4413,7 +4413,7 @@
 
     return 0;  /* Failure */
 #else
-    /* No need to initialise sockets with GCC/EMX */
+    /* No need to initialize sockets with GCC/EMX */
     return 1; /* Success */
 #endif
 }
@@ -4449,7 +4449,7 @@
    as makefile(), dup() and fromfd().  The import of "_socket" may fail
    with an ImportError exception if os-specific initialization fails.
    On Windows, this does WINSOCK initialization.  When WINSOCK is
-   initialized succesfully, a call to WSACleanup() is scheduled to be
+   initialized successfully, a call to WSACleanup() is scheduled to be
    made at exit time.
 */
 
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 61c1ccc..51f472e 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -635,7 +635,7 @@
     buf.tm_wday = -1;  /* sentinel; original value ignored */
     tt = mktime(&buf);
     /* Return value of -1 does not necessarily mean an error, but tm_wday
-     * cannot remain set to -1 if mktime succedded. */
+     * cannot remain set to -1 if mktime succeeded. */
     if (tt == (time_t)(-1) && buf.tm_wday == -1) {
         PyErr_SetString(PyExc_OverflowError,
                         "mktime argument out of range");
diff --git a/Modules/zipimport.c b/Modules/zipimport.c
index 0ca9788..9224a68 100644
--- a/Modules/zipimport.c
+++ b/Modules/zipimport.c
@@ -1053,7 +1053,7 @@
 }
 
 /* Given a path to a .pyc or .pyo file in the archive, return the
-   modifictaion time of the matching .py file, or 0 if no source
+   modification time of the matching .py file, or 0 if no source
    is available. */
 static time_t
 get_mtime_of_source(ZipImporter *self, char *path)
diff --git a/Modules/zlib/deflate.h b/Modules/zlib/deflate.h
index 05a5ab3..b16f7a7 100644
--- a/Modules/zlib/deflate.h
+++ b/Modules/zlib/deflate.h
@@ -188,7 +188,7 @@
     int nice_match; /* Stop searching when current match exceeds this */
 
                 /* used by trees.c: */
-    /* Didn't use ct_data typedef below to supress compiler warning */
+    /* Didn't use ct_data typedef below to suppress compiler warning */
     struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
     struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
     struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
diff --git a/Modules/zlib/gzio.c b/Modules/zlib/gzio.c
index 7e90f49..5cf50e0 100644
--- a/Modules/zlib/gzio.c
+++ b/Modules/zlib/gzio.c
@@ -256,7 +256,7 @@
 /* ===========================================================================
      Read a byte from a gz_stream; update next_in and avail_in. Return EOF
    for end of file.
-   IN assertion: the stream s has been sucessfully opened for reading.
+   IN assertion: the stream s has been successfully opened for reading.
 */
 local int get_byte(s)
     gz_stream *s;
@@ -281,7 +281,7 @@
     mode to transparent if the gzip magic header is not present; set s->err
     to Z_DATA_ERROR if the magic header is present but the rest of the header
     is incorrect.
-    IN assertion: the stream s has already been created sucessfully;
+    IN assertion: the stream s has already been created successfully;
        s->stream.avail_in is zero for the first time, but may be non-zero
        for concatenated .gz files.
 */
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 3670e97..e8f8b4a 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -2297,7 +2297,7 @@
         assert(d->ma_table == NULL && d->ma_fill == 0 && d->ma_used == 0);
         INIT_NONZERO_DICT_SLOTS(d);
         d->ma_lookup = lookdict_string;
-        /* The object has been implicitely tracked by tp_alloc */
+        /* The object has been implicitly tracked by tp_alloc */
         if (type == &PyDict_Type)
             _PyObject_GC_UNTRACK(d);
 #ifdef SHOW_CONVERSION_COUNTS
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 9704d8d..08f7880 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -11,7 +11,7 @@
 /* Ensure ob_item has room for at least newsize elements, and set
  * ob_size to newsize.  If newsize > ob_size on entry, the content
  * of the new slots at exit is undefined heap trash; it's the caller's
- * responsiblity to overwrite them with sane values.
+ * responsibility to overwrite them with sane values.
  * The number of allocated elements may grow, shrink, or stay the same.
  * Failure is impossible if newsize <= self.allocated on entry, although
  * that partly relies on an assumption that the system realloc() never
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 05d44b3..cd86a1f 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -532,7 +532,7 @@
         is_signed = *pendbyte >= 0x80;
 
     /* Compute numsignificantbytes.  This consists of finding the most
-       significant byte.  Leading 0 bytes are insignficant if the number
+       significant byte.  Leading 0 bytes are insignificant if the number
        is positive, and leading 0xff bytes if negative. */
     {
         size_t i;
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 66d6dca..30afc24 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1054,7 +1054,7 @@
           self has a refcount of 0, and if gc ever gets its hands on it
           (which can happen if any weakref callback gets invoked), it
           looks like trash to gc too, and gc also tries to delete self
-          then.  But we're already deleting self.  Double dealloction is
+          then.  But we're already deleting self.  Double deallocation is
           a subtle disaster.
 
        Q. Why the bizarre (net-zero) manipulation of
@@ -6345,7 +6345,7 @@
    slots compete for the same descriptor (for example both sq_item and
    mp_subscript generate a __getitem__ descriptor).
 
-   In the latter case, the first slotdef entry encoutered wins.  Since
+   In the latter case, the first slotdef entry encountered wins.  Since
    slotdef entries are sorted by the offset of the slot in the
    PyHeapTypeObject, this gives us some control over disambiguating
    between competing slots: the members of PyHeapTypeObject are listed
diff --git a/PC/bdist_wininst/extract.c b/PC/bdist_wininst/extract.c
index fc2d2b9..c900f23 100644
--- a/PC/bdist_wininst/extract.c
+++ b/PC/bdist_wininst/extract.c
@@ -54,7 +54,7 @@
     return TRUE;
 }
 
-/* XXX Should better explicitely specify
+/* XXX Should better explicitly specify
  * uncomp_size and file_times instead of pfhdr!
  */
 char *map_new_file(DWORD flags, char *filename,
@@ -164,7 +164,7 @@
         zstream.avail_out = uncomp_size;
 
 /* Apparently an undocumented feature of zlib: Set windowsize
-   to negative values to supress the gzip header and be compatible with
+   to negative values to suppress the gzip header and be compatible with
    zip! */
         result = TRUE;
         if (Z_OK != (x = inflateInit2(&zstream, -15))) {
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index f023019..2b1deef 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -147,7 +147,7 @@
    the permissions of the current user. */
 HKEY hkey_root = (HKEY)-1;
 
-BOOL success;                   /* Installation successfull? */
+BOOL success;                   /* Installation successful? */
 char *failure_reason = NULL;
 
 HANDLE hBitmap;
@@ -765,7 +765,7 @@
 
     tempname = tempnam(NULL, NULL);
     // We use a static CRT while the Python version we load uses
-    // the CRT from one of various possibile DLLs.  As a result we
+    // the CRT from one of various possible DLLs.  As a result we
     // need to redirect the standard handles using the API rather
     // than the CRT.
     redirected = CreateFile(
diff --git a/PC/os2emx/dlfcn.c b/PC/os2emx/dlfcn.c
index 47c046c..ebda9cd 100644
--- a/PC/os2emx/dlfcn.c
+++ b/PC/os2emx/dlfcn.c
@@ -188,7 +188,7 @@
     return NULL;
 }
 
-/* free dynamicaly-linked library */
+/* free dynamically-linked library */
 int dlclose(void *handle)
 {
     int rc;
diff --git a/PC/os2emx/dlfcn.h b/PC/os2emx/dlfcn.h
index 49abecf..f73ae69 100644
--- a/PC/os2emx/dlfcn.h
+++ b/PC/os2emx/dlfcn.h
@@ -42,7 +42,7 @@
 /* return a pointer to the `symbol' in DLL */
 void *dlsym(void *handle, char *symbol);
 
-/* free dynamicaly-linked library */
+/* free dynamically-linked library */
 int dlclose(void *handle);
 
 /* return a string describing last occurred dl error */
diff --git a/Python/ceval.c b/Python/ceval.c
index 4c6c0ea..10dd3a1 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -27,7 +27,7 @@
 
 typedef unsigned long long uint64;
 
-/* PowerPC suppport.
+/* PowerPC support.
    "__ppc__" appears to be the preprocessor definition to detect on OS X, whereas
    "__powerpc__" appears to be the correct one for Linux with GCC
 */
@@ -987,7 +987,7 @@
         if (--_Py_Ticker < 0) {
             if (*next_instr == SETUP_FINALLY) {
                 /* Make the last opcode before
-                   a try: finally: block uninterruptable. */
+                   a try: finally: block uninterruptible. */
                 goto fast_next_opcode;
             }
             _Py_Ticker = _Py_CheckInterval;
diff --git a/Python/pystate.c b/Python/pystate.c
index c0127be..ddb7d42 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -463,7 +463,7 @@
     /* for i in all interpreters:
      *     for t in all of i's thread states:
      *          if t's frame isn't NULL, map t's id to its frame
-     * Because these lists can mutute even when the GIL is held, we
+     * Because these lists can mutate even when the GIL is held, we
      * need to grab head_mutex for the duration.
      */
     HEAD_LOCK();
diff --git a/Python/thread.c b/Python/thread.c
index 1578f82..dd359e9 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -46,7 +46,7 @@
 #endif
 
 /* Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
-   enough of the Posix threads package is implimented to support python
+   enough of the Posix threads package is implemented to support python
    threads.
 
    This is valid for HP-UX 11.23 running on an ia64 system. If needed, add
diff --git a/Tools/freeze/checkextensions_win32.py b/Tools/freeze/checkextensions_win32.py
index a198ecf..e5a8b29 100644
--- a/Tools/freeze/checkextensions_win32.py
+++ b/Tools/freeze/checkextensions_win32.py
@@ -7,7 +7,7 @@
 we get it just right, a specific freeze application may have specific compiler
 options anyway (eg, to enable or disable specific functionality)
 
-So my basic stragtegy is:
+So my basic strategy is:
 
 * Have some Windows INI files which "describe" one or more extension modules.
   (Freeze comes with a default one for all known modules - but you can specify
diff --git a/Tools/scripts/fixcid.py b/Tools/scripts/fixcid.py
index 433a425..58ec7ad 100755
--- a/Tools/scripts/fixcid.py
+++ b/Tools/scripts/fixcid.py
@@ -188,7 +188,7 @@
     except os.error, msg:
         err(filename + ': rename failed (' + str(msg) + ')\n')
         return 1
-    # Return succes
+    # Return success
     return 0
 
 # Tokenizing ANSI C (partly)
diff --git a/setup.py b/setup.py
index aa1c6b5..38f21d8 100644
--- a/setup.py
+++ b/setup.py
@@ -1061,8 +1061,8 @@
             if sys.platform == 'darwin':
                 # In every directory on the search path search for a dynamic
                 # library and then a static library, instead of first looking
-                # for dynamic libraries on the entiry path.
-                # This way a staticly linked custom sqlite gets picked up
+                # for dynamic libraries on the entire path.
+                # This way a statically linked custom sqlite gets picked up
                 # before the dynamic library in /usr/lib.
                 sqlite_extra_link_args = ('-Wl,-search_paths_first',)
             else: