gh-109975: Copyedit What's New in Python 3.13 (#123150)

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Doc/whatsnew/3.13.rst

@@ -499,7 +499,7 @@ by an order of magnitude or more for larger heaps.
 Other Language Changes
 ======================
 
-* The compiler now strips common common leading whitespace
+* The compiler now strips common leading whitespace
   from every line in a docstring.
   This reduces the size of the :term:`bytecode cache <bytecode>`
   (such as ``.pyc`` files), with reductions in file size of around 5%,
@@ -632,7 +632,7 @@ array
   It can be used instead of ``'u'`` type code, which is deprecated.
   (Contributed by Inada Naoki in :gh:`80480`.)
 
-* Add ``clear()`` method in order to implement ``MutableSequence``.
+* Add ``clear()`` method in order to implement :class:`~collections.abc.MutableSequence`.
   (Contributed by Mike Zimin in :gh:`114894`.)
 
 ast
@@ -904,7 +904,7 @@ importlib
 io
 --
 
-* The :class:`io.IOBase` finalizer now logs the ``close()`` method errors with
+* The :class:`io.IOBase` finalizer now logs errors raised by the ``close()`` method with
   :data:`sys.unraisablehook`. Previously, errors were ignored silently by default,
   and only logged in :ref:`Python Development Mode <devmode>` or on :ref:`Python
   built on debug mode <debug-build>`.
@@ -957,7 +957,7 @@ mimetypes
 mmap
 ----
 
-* The :class:`mmap.mmap` class now has an :meth:`~mmap.mmap.seekable` method
+* The :class:`mmap.mmap` class now has a :meth:`~mmap.mmap.seekable` method
   that can be used when a seekable file-like object is required.
   The :meth:`~mmap.mmap.seek` method now returns the new absolute position.
   (Contributed by Donghee Na and Sylvie Liberman in :gh:`111835`.)
@@ -1091,7 +1091,7 @@ pathlib
 pdb
 ---
 
-* Add ability to move between chained exceptions during post mortem debugging in :func:`~pdb.pm` using
+* Add ability to move between chained exceptions during post-mortem debugging in :func:`~pdb.pm` using
   the new ``exceptions [exc_number]`` command for Pdb. (Contributed by Matthias
   Bussonnier in :gh:`106676`.)
 
@@ -1187,7 +1187,7 @@ subprocess
   more situations.  Notably in the default case of ``close_fds=True`` on more
   recent versions of platforms including Linux, FreeBSD, and Solaris where the
   C library provides :c:func:`!posix_spawn_file_actions_addclosefrom_np`.
-  On Linux this should perform similar to our existing Linux :c:func:`!vfork`
+  On Linux this should perform similarly to the existing Linux :c:func:`!vfork`
   based code.  A private control knob :attr:`!subprocess._USE_POSIX_SPAWN` can
   be set to ``False`` if you need to force :mod:`subprocess` not to ever use
   :func:`os.posix_spawn`.  Please report your reason and platform details in
@@ -1198,7 +1198,7 @@ subprocess
 sys
 ---
 
-* Add the :func:`sys._is_interned` function to test if the string was interned.
+* Add the :func:`sys._is_interned` function to test if a string was interned.
   This function is not guaranteed to exist in all implementations of Python.
   (Contributed by Serhiy Storchaka in :gh:`78573`.)
 
@@ -1214,7 +1214,7 @@ time
 ----
 
 * On Windows, :func:`time.monotonic()` now uses the
-  ``QueryPerformanceCounter()`` clock to have a resolution better than 1 us,
+  ``QueryPerformanceCounter()`` clock to have a resolution better than 1 μs,
   instead of the ``GetTickCount64()`` clock which has a resolution of 15.6 ms.
   (Contributed by Victor Stinner in :gh:`88494`.)
 
@@ -1245,7 +1245,7 @@ tkinter
 
 * Add new optional keyword-only parameter *return_ints* in
   the :meth:`!Text.count` method.
-  Passing ``return_ints=True`` makes it always returning the single count
+  Passing ``return_ints=True`` makes it always return the single count
   as an integer instead of a 1-tuple or ``None``.
   (Contributed by Serhiy Storchaka in :gh:`97928`.)
 
@@ -1288,8 +1288,8 @@ traceback
 types
 -----
 
-* :class:`~types.SimpleNamespace` constructor now allows specifying initial
-  values of attributes as a positional argument which must be a mapping or
+* The :class:`~types.SimpleNamespace` constructor now allows specifying initial
+  values of attributes as a positional argument, which must be a mapping or
   an iterable of key-value pairs.
   (Contributed by Serhiy Storchaka in :gh:`108191`.)
 
@@ -1715,7 +1715,7 @@ New Deprecations
 
   (Contributed by Erlend E. Aasland in :gh:`107948` and :gh:`108278`.)
 
-* :mod:`sys`: :func:`sys._enablelegacywindowsfsencoding` function.
+* :mod:`sys`: The :func:`sys._enablelegacywindowsfsencoding` function is deprecated.
   Replace it with the :envvar:`PYTHONLEGACYWINDOWSFSENCODING` environment variable.
   (Contributed by Inada Naoki in :gh:`73427`.)
 
@@ -1739,8 +1739,8 @@ New Deprecations
     deprecated. Passing ``None`` to the 'fields' parameter
     (``NT = NamedTuple("NT", None)`` or ``TD = TypedDict("TD", None)``) is also
     deprecated. Both will be disallowed in Python 3.15. To create a NamedTuple
-    class with 0 fields, use ``class NT(NamedTuple): pass`` or
-    ``NT = NamedTuple("NT", [])``. To create a TypedDict class with 0 fields, use
+    class with zero fields, use ``class NT(NamedTuple): pass`` or
+    ``NT = NamedTuple("NT", [])``. To create a TypedDict class with zero fields, use
     ``class TD(TypedDict): pass`` or ``TD = TypedDict("TD", {})``.
     (Contributed by Alex Waygood in :gh:`105566` and :gh:`105570`.)
 
@@ -1757,7 +1757,7 @@ New Deprecations
 
 * :ref:`user-defined-funcs`:
   Assignment to a function's :attr:`~function.__code__` attribute where the new code
-  object's type does not match the function's type, is deprecated. The
+  object's type does not match the function's type is deprecated. The
   different types are: plain function, generator, async generator and
   coroutine.
   (Contributed by Irit Katriel in :gh:`81137`.)
@@ -1998,7 +1998,7 @@ New Features
   (Contributed by Victor Stinner in :gh:`116936`.)
 
 * Add two new functions to the C-API, :c:func:`PyRefTracer_SetTracer` and
-  :c:func:`PyRefTracer_GetTracer`, that allows to track object creation and
+  :c:func:`PyRefTracer_GetTracer`, that allow to track object creation and
   destruction the same way the :mod:`tracemalloc` module does. (Contributed
   by Pablo Galindo in :gh:`93502`.)