68 files changed, 93 insertions, 92 deletions

diff --git a/Doc/c-api/set.rst b/Doc/c-api/set.rst
index 7f4d534..8de0394 100644
--- a/Doc/c-api/set.rst
+++ b/Doc/c-api/set.rst
@@ -128,7 +128,7 @@ or :class:`frozenset` or instances of their subtypes.
    of brand new frozensets before they are exposed to other code).  Return 0 on
    success or -1 on failure. Raise a :exc:`TypeError` if the *key* is
    unhashable. Raise a :exc:`MemoryError` if there is no room to grow.  Raise a
-   :exc:`SystemError` if *set* is an not an instance of :class:`set` or its
+   :exc:`SystemError` if *set* is not an instance of :class:`set` or its
    subtype.
 
 
@@ -142,7 +142,7 @@ subtypes but not for instances of :class:`frozenset` or its subtypes.
    error is encountered.  Does not raise :exc:`KeyError` for missing keys.  Raise a
    :exc:`TypeError` if the *key* is unhashable.  Unlike the Python :meth:`~set.discard`
    method, this function does not automatically convert unhashable sets into
-   temporary frozensets. Raise :exc:`PyExc_SystemError` if *set* is an not an
+   temporary frozensets. Raise :exc:`PyExc_SystemError` if *set* is not an
    instance of :class:`set` or its subtype.
 
 
@@ -150,7 +150,7 @@ subtypes but not for instances of :class:`frozenset` or its subtypes.
 
    Return a new reference to an arbitrary object in the *set*, and removes the
    object from the *set*.  Return *NULL* on failure.  Raise :exc:`KeyError` if the
-   set is empty. Raise a :exc:`SystemError` if *set* is an not an instance of
+   set is empty. Raise a :exc:`SystemError` if *set* is not an instance of
    :class:`set` or its subtype.
 
 
diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 1ed8140..0b45958 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -367,7 +367,7 @@ These APIs can be used to work with surrogates:
 
 .. c:macro:: Py_UNICODE_IS_HIGH_SURROGATE(ch)
 
-   Check if *ch* is an high surrogate (``0xD800 <= ch <= 0xDBFF``).
+   Check if *ch* is a high surrogate (``0xD800 <= ch <= 0xDBFF``).
 
 .. c:macro:: Py_UNICODE_IS_LOW_SURROGATE(ch)
 
@@ -450,7 +450,7 @@ APIs:
    | :attr:`%%`        | *n/a*               | The literal % character.       |
    +-------------------+---------------------+--------------------------------+
    | :attr:`%c`        | int                 | A single character,            |
-   |                   |                     | represented as an C int.       |
+   |                   |                     | represented as a C int.        |
    +-------------------+---------------------+--------------------------------+
    | :attr:`%d`        | int                 | Exactly equivalent to          |
    |                   |                     | ``printf("%d")``.              |
diff --git a/Doc/distutils/apiref.rst b/Doc/distutils/apiref.rst
index e66835a..7d6a84e 100644
--- a/Doc/distutils/apiref.rst
+++ b/Doc/distutils/apiref.rst
@@ -837,7 +837,7 @@ selection by :class:`MSVCCompiler`.
 .. module:: distutils.bcppcompiler
 
 
-This module provides :class:`BorlandCCompiler`, an subclass of the abstract
+This module provides :class:`BorlandCCompiler`, a subclass of the abstract
 :class:`CCompiler` class for the Borland C++ compiler.
 
 
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index 659b37c..f68b19d 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -513,7 +513,7 @@ Low-level socket operations
 
    The *address* must be already resolved to avoid the trap of hanging the
    entire event loop when the address requires doing a DNS lookup.  For
-   example, it must be an IP address, not an hostname, for
+   example, it must be an IP address, not a hostname, for
    :py:data:`~socket.AF_INET` and :py:data:`~socket.AF_INET6` address families.
    Use :meth:`getaddrinfo` to resolve the hostname asynchronously.
 
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 828d7ca4..e2a18c1 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -671,7 +671,7 @@ positive integer::
 
    TenPointsArrayType = POINT * 10
 
-Here is an example of an somewhat artificial data type, a structure containing 4
+Here is an example of a somewhat artificial data type, a structure containing 4
 POINTs among other stuff::
 
    >>> from ctypes import *
@@ -1888,7 +1888,7 @@ Utility functions
 .. function:: POINTER(type)
 
    This factory function creates and returns a new ctypes pointer type. Pointer
-   types are cached an reused internally, so calling this function repeatedly is
+   types are cached and reused internally, so calling this function repeatedly is
    cheap. *type* must be a ctypes type.
 
 
diff --git a/Doc/library/idle.rst b/Doc/library/idle.rst
index 4384d56..df08fe8 100644
--- a/Doc/library/idle.rst
+++ b/Doc/library/idle.rst
@@ -128,7 +128,7 @@ Find Selection
    Search for the currently selected string, if there is one.
 
 Find in Files...
-   Open a file search dialog.  Put results in an new output window.
+   Open a file search dialog.  Put results in a new output window.
 
 Replace...
    Open a search-and-replace dialog.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 904627f..c39a19a 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -342,7 +342,7 @@ Directory and files operations
    Return the path to an executable which would be run if the given *cmd* was
    called.  If no *cmd* would be called, return ``None``.
 
-   *mode* is a permission mask passed a to :func:`os.access`, by default
+   *mode* is a permission mask passed to :func:`os.access`, by default
    determining if the file exists and executable.
 
    When no *path* is specified, the results of :func:`os.environ` are used,
diff --git a/Doc/library/tarfile.rst b/Doc/library/tarfile.rst
index 5fa4787..bf90fc4 100644
--- a/Doc/library/tarfile.rst
+++ b/Doc/library/tarfile.rst
@@ -129,7 +129,7 @@ Some facts and figures:
    | ``'r|bz2'`` | Open a bzip2 compressed *stream* for       |
    |             | reading.                                   |
    +-------------+--------------------------------------------+
-   | ``'r|xz'``  | Open a lzma compressed *stream* for        |
+   | ``'r|xz'``  | Open an lzma compressed *stream* for       |
    |             | reading.                                   |
    +-------------+--------------------------------------------+
    | ``'w|'``    | Open an uncompressed *stream* for writing. |
diff --git a/Doc/library/tkinter.tix.rst b/Doc/library/tkinter.tix.rst
index 9de73ad..9da7959 100644
--- a/Doc/library/tkinter.tix.rst
+++ b/Doc/library/tkinter.tix.rst
@@ -267,7 +267,7 @@ File Selectors
 
    The `ExFileSelectBox
    <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixExFileSelectBox.htm>`_
-   widget is usually embedded in a tixExFileSelectDialog widget. It provides an
+   widget is usually embedded in a tixExFileSelectDialog widget. It provides a
    convenient method for the user to select files. The style of the
    :class:`ExFileSelectBox` widget is very similar to the standard file dialog on
    MS Windows 3.1.
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index 0d51480..b39bdf4 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -397,7 +397,7 @@ objects, such as lists.
 
 Though tuples may seem similar to lists, they are often used in different
 situations and for different purposes.
-Tuples are :term:`immutable`, and usually contain an heterogeneous sequence of
+Tuples are :term:`immutable`, and usually contain a heterogeneous sequence of
 elements that are accessed via unpacking (see later in this section) or indexing
 (or even by attribute in the case of :func:`namedtuples <collections.namedtuple>`).
 Lists are :term:`mutable`, and their elements are usually homogeneous and are
diff --git a/Doc/whatsnew/2.2.rst b/Doc/whatsnew/2.2.rst
index 603c63d..75e176c 100644
--- a/Doc/whatsnew/2.2.rst
+++ b/Doc/whatsnew/2.2.rst
@@ -720,7 +720,7 @@ possible types of the operands.
 
 (The controversy is over whether this is *really* a design flaw, and whether
 it's worth breaking existing code to fix this.  It's caused endless discussions
-on python-dev, and in July 2001 erupted into an storm of acidly sarcastic
+on python-dev, and in July 2001 erupted into a storm of acidly sarcastic
 postings on :newsgroup:`comp.lang.python`. I won't argue for either side here
 and will stick to describing what's  implemented in 2.2.  Read :pep:`238` for a
 summary of arguments and counter-arguments.)
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index ca7716a..fdca922 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -1457,7 +1457,7 @@ s), as well as a :meth:`~ssl.SSLContext.get_ca_certs` method that returns a
 list of the loaded ``CA`` certificates.  (Contributed by Christian Heimes in
 :issue:`18147`.)
 
-If OpenSSL 0.9.8 or later is available, :class:`~ssl.SSLContext` has an new
+If OpenSSL 0.9.8 or later is available, :class:`~ssl.SSLContext` has a new
 attribute :attr:`~ssl.SSLContext.verify_flags` that can be used to control the
 certificate verification process by setting it to some combination of the new
 constants :data:`~ssl.VERIFY_DEFAULT`, :data:`~ssl.VERIFY_CRL_CHECK_LEAF`,
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index adb8b73..331112f 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -214,7 +214,7 @@ directives ``%G``, ``%u`` and ``%V``.
 faulthandler
 ------------
 
-On Windows, the :mod:`faulthandler` module now installs an handler for Windows
+On Windows, the :mod:`faulthandler` module now installs a handler for Windows
 exceptions: see :func:`faulthandler.enable`. (Contributed by Victor Stinner in
 :issue:`23848`.)
 
diff --git a/Include/listobject.h b/Include/listobject.h
index daa513f..31843b5 100644
--- a/Include/listobject.h
+++ b/Include/listobject.h
@@ -2,7 +2,7 @@
 /* List object interface */
 
 /*
-Another generally useful object type is an list of object pointers.
+Another generally useful object type is a list of object pointers.
 This is a mutable type: the list items can be changed, and items can be
 added or removed.  Out-of-range indices or non-list objects are ignored.
 
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 791da0e..1af620d 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -844,7 +844,7 @@ PyAPI_FUNC(int) PyUnicode_Resize(
     Py_ssize_t length           /* New length */
     );
 
-/* Decode obj to an Unicode object.
+/* Decode obj to a Unicode object.
 
    bytes, bytearray and other bytes-like objects are decoded according to the
    given encoding and error handler. The encoding and error handler can be
diff --git a/Lib/_pydecimal.py b/Lib/_pydecimal.py
index 60723f3..5c48e0b 100644
--- a/Lib/_pydecimal.py
+++ b/Lib/_pydecimal.py
@@ -252,7 +252,7 @@ class InvalidOperation(DecimalException):
 class ConversionSyntax(InvalidOperation):
     """Trying to convert badly formed string.
 
-    This occurs and signals invalid-operation if an string is being
+    This occurs and signals invalid-operation if a string is being
     converted to a number and it does not conform to the numeric string
     syntax.  The result is [0,qNaN].
     """
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 354702e..404e027 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -439,7 +439,7 @@ class IOBase(metaclass=abc.ABCMeta):
         return self.__closed
 
     def _checkClosed(self, msg=None):
-        """Internal: raise an ValueError if file is closed
+        """Internal: raise a ValueError if file is closed
         """
         if self.closed:
             raise ValueError("I/O operation on closed file."
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index 3dba4fb..6838d72 100644
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -387,7 +387,7 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
 
         The address must be already resolved to avoid the trap of hanging the
         entire event loop when the address requires doing a DNS lookup. For
-        example, it must be an IP address, not an hostname, for AF_INET and
+        example, it must be an IP address, not a hostname, for AF_INET and
         AF_INET6 address families. Use getaddrinfo() to resolve the hostname
         asynchronously.
 
diff --git a/Lib/email/_header_value_parser.py b/Lib/email/_header_value_parser.py
index f264191..a7ce30e 100644
--- a/Lib/email/_header_value_parser.py
+++ b/Lib/email/_header_value_parser.py
@@ -1522,7 +1522,7 @@ def get_qp_ctext(value):
     This is not the RFC ctext, since we are handling nested comments in comment
     and unquoting quoted-pairs here.  We allow anything except the '()'
     characters, but if we find any ASCII other than the RFC defined printable
-    ASCII an NonPrintableDefect is added to the token's defects list.  Since
+    ASCII, a NonPrintableDefect is added to the token's defects list.  Since
     quoted pairs are converted to their unquoted values, what is returned is
     a 'ptext' token.  In this case it is a WhiteSpaceTerminal, so it's value
     is ' '.
@@ -1537,7 +1537,7 @@ def get_qcontent(value):
     """qcontent = qtext / quoted-pair
 
     We allow anything except the DQUOTE character, but if we find any ASCII
-    other than the RFC defined printable ASCII an NonPrintableDefect is
+    other than the RFC defined printable ASCII, a NonPrintableDefect is
     added to the token's defects list.  Any quoted pairs are converted to their
     unquoted values, so what is returned is a 'ptext' token.  In this case it
     is a ValueTerminal.
@@ -1882,7 +1882,7 @@ def get_dtext(value):
         obs-dtext = obs-NO-WS-CTL / quoted-pair
 
     We allow anything except the excluded characters, but if we find any
-    ASCII other than the RFC defined printable ASCII an NonPrintableDefect is
+    ASCII other than the RFC defined printable ASCII, a NonPrintableDefect is
     added to the token's defects list.  Quoted pairs are converted to their
     unquoted values, so what is returned is a ptext token, in this case a
     ValueTerminal.  If there were quoted-printables, an ObsoleteHeaderDefect is
diff --git a/Lib/email/headerregistry.py b/Lib/email/headerregistry.py
index 4e142ee..0fc2231 100644
--- a/Lib/email/headerregistry.py
+++ b/Lib/email/headerregistry.py
@@ -109,7 +109,7 @@ class Group:
     def __init__(self, display_name=None, addresses=None):
         """Create an object representing an address group.
 
-        An address group consists of a display_name followed by colon and an
+        An address group consists of a display_name followed by colon and a
         list of addresses (see Address) terminated by a semi-colon.  The Group
         is created by specifying a display_name and a possibly empty list of
         Address objects.  A Group can also be used to represent a single
diff --git a/Lib/idlelib/AutoComplete.py b/Lib/idlelib/AutoComplete.py
index b20512d..b9ec539 100644
--- a/Lib/idlelib/AutoComplete.py
+++ b/Lib/idlelib/AutoComplete.py
@@ -64,7 +64,7 @@ class AutoComplete:
 
     def try_open_completions_event(self, event):
         """Happens when it would be nice to open a completion list, but not
-        really necessary, for example after an dot, so function
+        really necessary, for example after a dot, so function
         calls won't be made.
         """
         lastchar = self.text.get("insert-1c")
diff --git a/Lib/idlelib/Debugger.py b/Lib/idlelib/Debugger.py
index 250422e..d5e217d 100644
--- a/Lib/idlelib/Debugger.py
+++ b/Lib/idlelib/Debugger.py
@@ -372,7 +372,7 @@ class StackViewer(ScrolledList):
     def __init__(self, master, flist, gui):
         if macosxSupport.isAquaTk():
             # At least on with the stock AquaTk version on OSX 10.4 you'll
-            # get an shaking GUI that eventually kills IDLE if the width
+            # get a shaking GUI that eventually kills IDLE if the width
             # argument is specified.
             ScrolledList.__init__(self, master)
         else:
diff --git a/Lib/idlelib/WidgetRedirector.py b/Lib/idlelib/WidgetRedirector.py
index 67d7f61..b66be9e 100644
--- a/Lib/idlelib/WidgetRedirector.py
+++ b/Lib/idlelib/WidgetRedirector.py
@@ -68,7 +68,7 @@ class WidgetRedirector:
         '''Return OriginalCommand(operation) after registering function.
 
         Registration adds an operation: function pair to ._operations.
-        It also adds an widget function attribute that masks the tkinter
+        It also adds a widget function attribute that masks the tkinter
         class instance method.  Method masking operates independently
         from command dispatch.
 
diff --git a/Lib/idlelib/configDialog.py b/Lib/idlelib/configDialog.py
index 9b16459..f00db39 100644
--- a/Lib/idlelib/configDialog.py
+++ b/Lib/idlelib/configDialog.py
@@ -1196,7 +1196,7 @@ class ConfigDialog(Toplevel):
 
         All values are treated as text, and it is up to the user to supply
         reasonable values. The only exception to this are the 'enable*' options,
-        which are boolean, and can be toggled with an True/False button.
+        which are boolean, and can be toggled with a True/False button.
         """
         parent = self.parent
         frame = self.tabPages.pages['Extensions'].frame
diff --git a/Lib/lib2to3/fixer_base.py b/Lib/lib2to3/fixer_base.py
index b176056..1ce62fe 100644
--- a/Lib/lib2to3/fixer_base.py
+++ b/Lib/lib2to3/fixer_base.py
@@ -49,7 +49,7 @@ class BaseFix(object):
         """Initializer.  Subclass may override.
 
         Args:
-            options: an dict containing the options passed to RefactoringTool
+            options: a dict containing the options passed to RefactoringTool
             that could be used to customize the fixer through the command line.
             log: a list to append warnings and other messages to.
         """
diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
index adf9996..0728083 100644
--- a/Lib/lib2to3/refactor.py
+++ b/Lib/lib2to3/refactor.py
@@ -184,7 +184,7 @@ class RefactoringTool(object):
 
         Args:
             fixer_names: a list of fixers to import
-            options: an dict with configuration.
+            options: a dict with configuration.
             explicit: a list of fixers to run even if they are explicit.
         """
         self.fixers = fixer_names
diff --git a/Lib/lzma.py b/Lib/lzma.py
index 89528b6..7dff1c3 100644
--- a/Lib/lzma.py
+++ b/Lib/lzma.py
@@ -279,7 +279,7 @@ def open(filename, mode="rb", *,
     constructor: LZMAFile(filename, mode, ...). In this case, the
     encoding, errors and newline arguments must not be provided.
 
-    For text mode, a LZMAFile object is created, and wrapped in an
+    For text mode, an LZMAFile object is created, and wrapped in an
     io.TextIOWrapper instance with the specified encoding, error
     handling behavior, and line ending(s).
 
diff --git a/Lib/mailbox.py b/Lib/mailbox.py
index 24d4aec..0270e25 100644
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -1821,7 +1821,7 @@ class BabylMessage(Message):
     _type_specific_attributes = ['_labels', '_visible']
 
     def __init__(self, message=None):
-        """Initialize an BabylMessage instance."""
+        """Initialize a BabylMessage instance."""
         self._labels = []
         self._visible = Message()
         Message.__init__(self, message)
diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index 776656e..c559b55 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -842,7 +842,7 @@ def RebuildProxy(func, token, serializer, kwds):
 
 def MakeProxyType(name, exposed, _cache={}):
     '''
-    Return an proxy type whose methods are given by `exposed`
+    Return a proxy type whose methods are given by `exposed`
     '''
     exposed = tuple(exposed)
     try:
diff --git a/Lib/optparse.py b/Lib/optparse.py
index d239ea2..230a0f6 100644
--- a/Lib/optparse.py
+++ b/Lib/optparse.py
@@ -1362,7 +1362,7 @@ class OptionParser (OptionContainer):
         sys.argv[1:]).  Any errors result in a call to 'error()', which
         by default prints the usage message to stderr and calls
         sys.exit() with an error message.  On success returns a pair
-        (values, args) where 'values' is an Values instance (with all
+        (values, args) where 'values' is a Values instance (with all
         your option values) and 'args' is the list of arguments left
         over after parsing options.
         """
diff --git a/Lib/pprint.py b/Lib/pprint.py
index 87649b4..bcf2eed 100644
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -72,7 +72,7 @@ def isrecursive(object):
 class _safe_key:
     """Helper function for key functions when sorting unorderable objects.
 
-    The wrapped-object will fallback to an Py2.x style comparison for
+    The wrapped-object will fallback to a Py2.x style comparison for
     unorderable types (sorting first comparing the type name and then by
     the obj ids).  Does not work recursively, so dict.items() must have
     _safe_key applied to both the key and the value.
diff --git a/Lib/socket.py b/Lib/socket.py
index 95ce9eb..ac2e3dd 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -685,7 +685,7 @@ def create_connection(address, timeout=_GLOBAL_DEFAULT_TIMEOUT,
     global default timeout setting returned by :func:`getdefaulttimeout`
     is used.  If *source_address* is set it must be a tuple of (host, port)
     for the socket to bind as a source address before making the connection.
-    An host of '' or port 0 tells the OS to use the default.
+    A host of '' or port 0 tells the OS to use the default.
     """
 
     host, port = address
diff --git a/Lib/socketserver.py b/Lib/socketserver.py
index 3e1f058..70fdd6c 100644
--- a/Lib/socketserver.py
+++ b/Lib/socketserver.py
@@ -747,7 +747,7 @@ class StreamRequestHandler(BaseRequestHandler):
             try:
                 self.wfile.flush()
             except socket.error:
-                # An final socket error may have occurred here, such as
+                # A final socket error may have occurred here, such as
                 # the local error ECONNABORTED.
                 pass
         self.wfile.close()
diff --git a/Lib/sqlite3/test/regression.py b/Lib/sqlite3/test/regression.py
index eaaaa2c..11adb30 100644
--- a/Lib/sqlite3/test/regression.py
+++ b/Lib/sqlite3/test/regression.py
@@ -73,7 +73,7 @@ class RegressionTests(unittest.TestCase):
     def CheckStatementFinalizationOnCloseDb(self):
         # pysqlite versions <= 2.3.3 only finalized statements in the statement
         # cache when closing the database. statements that were still
-        # referenced in cursors weren't closed an could provoke "
+        # referenced in cursors weren't closed and could provoke "
         # "OperationalError: Unable to close due to unfinalised statements".
         con = sqlite.connect(":memory:")
         cursors = []
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 1ac7007..ad0f5c3 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1528,9 +1528,9 @@ class TarFile(object):
 
            'x' or 'x:'  create a tarfile exclusively without compression, raise
                         an exception if the file is already created
-           'x:gz'       create an gzip compressed tarfile, raise an exception
+           'x:gz'       create a gzip compressed tarfile, raise an exception
                         if the file is already created
-           'x:bz2'      create an bzip2 compressed tarfile, raise an exception
+           'x:bz2'      create a bzip2 compressed tarfile, raise an exception
                         if the file is already created
            'x:xz'       create an lzma compressed tarfile, raise an exception
                         if the file is already created
diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
index 135b5ab..77e72e5 100644
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -1182,7 +1182,7 @@ class SelectorSslTransportTests(test_utils.TestCase):
         self.assertIs(exc, waiter.exception())
 
     def test_cancel_handshake(self):
-        # Python issue #23197: cancelling an handshake must not raise an
+        # Python issue #23197: cancelling a handshake must not raise an
         # exception or log an error, even if the handshake failed
         waiter = asyncio.Future(loop=self.loop)
         transport = self.ssl_transport(waiter=waiter)
diff --git a/Lib/test/test_asyncio/test_sslproto.py b/Lib/test/test_asyncio/test_sslproto.py
index a72967e..e4121a0 100644
--- a/Lib/test/test_asyncio/test_sslproto.py
+++ b/Lib/test/test_asyncio/test_sslproto.py
@@ -40,7 +40,7 @@ class SslProtoHandshakeTests(test_utils.TestCase):
             ssl_proto.connection_made(transport)
 
     def test_cancel_handshake(self):
-        # Python issue #23197: cancelling an handshake must not raise an
+        # Python issue #23197: cancelling a handshake must not raise an
         # exception or log an error, even if the handshake failed
         waiter = asyncio.Future(loop=self.loop)
         ssl_proto = self.ssl_protocol(waiter)
diff --git a/Lib/test/test_binop.py b/Lib/test/test_binop.py
index 823740c..e9dbddc 100644
--- a/Lib/test/test_binop.py
+++ b/Lib/test/test_binop.py
@@ -58,7 +58,7 @@ class Rat(object):
     den = property(_get_den, None)
 
     def __repr__(self):
-        """Convert a Rat to an string resembling a Rat constructor call."""
+        """Convert a Rat to a string resembling a Rat constructor call."""
         return "Rat(%d, %d)" % (self.__num, self.__den)
 
     def __str__(self):
diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
index a3a2116..fc2d6d7 100644
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -715,7 +715,7 @@ class FaultHandlerTests(unittest.TestCase):
             sys.stderr = stderr
 
     def test_stderr_None(self):
-        # Issue #21497: provide an helpful error if sys.stderr is None,
+        # Issue #21497: provide a helpful error if sys.stderr is None,
         # instead of just an attribute error: "None has no attribute fileno".
         with self.check_stderr_none():
             faulthandler.enable()
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 7465c61..b32c9fb 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -200,7 +200,7 @@ class _BasePurePathTest(object):
 
     def _check_str_subclass(self, *args):
         # Issue #21127: it should be possible to construct a PurePath object
-        # from an str subclass instance, and it then gets converted to
+        # from a str subclass instance, and it then gets converted to
         # a pure str object.
         class StrSubclass(str):
             pass
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 2aa16fc..a531879 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -644,7 +644,7 @@ class SysModuleTest(unittest.TestCase):
         self.assertEqual(os.path.abspath(sys.executable), sys.executable)
 
         # Issue #7774: Ensure that sys.executable is an empty string if argv[0]
-        # has been set to an non existent program name and Python is unable to
+        # has been set to a non existent program name and Python is unable to
         # retrieve the real program name
 
         # For a normal installation, it should work without 'cwd'
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index f6b416d..71df14c 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py