Merge branch 'main' into deprecate-__getformat__/145633

skirpichev · Mar 25, 2026 · Mar 25, 2026 · Mar 25, 2026 · Mar 25, 2026 · Apr 1, 2026
commit ec1853118fc2af0570665456a787a10dfa7dd4ea
diff --git a/Doc/deprecations/pending-removal-in-3.21.rst b/Doc/deprecations/pending-removal-in-3.21.rst
@@ -1,6 +1,12 @@
 Pending removal in Python 3.21
 ------------------------------
 
+* The ``__getformat__()`` class method of the :class:`float` is deprecated and
+  will be removed in Python 3.21.  On CPython, ``float.__getformat__()`` always
+  return a string, prefixed with ``"IEEE"``: to build CPython, you need support
+  for IEEE 754 floating-point numbers since Python 3.11.  (Contributed by
+  Sergey B Kirpichev in :gh:`85989`.)
+
 * :mod:`abc`
 
    * Soft-deprecated since Python 3.3 :class:`abc.abstractclassmethod`,
@@ -18,8 +24,13 @@ Pending removal in Python 3.21
   * The ``dims`` property of ``ast.Tuple`` will be removed in Python 3.21. Use
     the ``ast.Tuple.elts`` property instead.
 
-* The ``__getformat__()`` class method of the :class:`float` is deprecated and
-  will be removed in Python 3.21.  On CPython, ``float.__getformat__()`` always
-  return a string, prefixed with ``"IEEE"``: to build CPython, you need support
-  for IEEE 754 floating-point numbers since Python 3.11.  (Contributed by
-  Sergey B Kirpichev in :gh:`85989`.)
+* :mod:`struct`:
+
+  * Soft-deprecated since Python 3.15, using ``'F'`` and ``'D'`` type codes are now
+    deprecated.  These codes will be removed in Python 3.21.  Use instead
+    two-letter forms ``'Zf'`` and ``'Zd'``.
+
+* :mod:`tempfile`:
+
+  * ``tempfile._TemporaryFileWrapper`` will be removed in Python 3.21. Use the
+    public :class:`tempfile.TemporaryFileWrapper` instead.
@@ -721,6 +721,12 @@ Deprecated
 New deprecations
 ----------------
 
+* The ``__getformat__()`` class method of the :class:`float` is deprecated
+  and will be removed in Python 3.21.  On CPython, ``float.__getformat__()``
+  always return a string, prefixed with ``"IEEE"``: to build CPython, you
+  need support for IEEE 754 floating-point numbers since Python 3.11.
+  (Contributed by Sergey B Kirpichev in :gh:`85989`.)
+
 * :mod:`abc`
 
   * Soft-deprecated since Python 3.3 :class:`abc.abstractclassmethod`,
@@ -741,11 +747,28 @@ New deprecations
     3.9, now issues a deprecation warning on use. This property is slated for
     removal in 3.21. Use ``ast.Tuple.elts`` instead.
 
-  * The ``__getformat__()`` class method of the :class:`float` is deprecated
-    and will be removed in Python 3.21.  On CPython, ``float.__getformat__()``
-    always return a string, prefixed with ``"IEEE"``: to build CPython, you
-    need support for IEEE 754 floating-point numbers since Python 3.11.
-    (Contributed by Sergey B Kirpichev in :gh:`85989`.)
+* :mod:`struct`:
+
+  * Soft-deprecated since Python 3.15, using ``'F'`` and ``'D'`` type codes are now
+    deprecated.  These codes will be removed in Python 3.21.  Use instead
+    two-letter forms ``'Zf'`` and ``'Zd'``.
+    (Contributed by Sergey B Kirpichev in :gh:`121249`.)
+
+* :mod:`tempfile`
+
+  * The private ``tempfile._TemporaryFileWrapper`` name is deprecated
+    and is slated for removal in Python 3.21.
+    Use the new public :class:`tempfile.TemporaryFileWrapper` instead,
+    which is the return type of :func:`tempfile.NamedTemporaryFile`.
+
+* :mod:`tkinter`:
+
+  * :func:`tkinter.filedialog.askopenfiles` is deprecated and slated for
+    removal in Python 3.19.  Opening several files at once is error-prone, and
+    the returned list cannot be used in a :keyword:`with` statement.  Iterate
+    over the names returned by :func:`~tkinter.filedialog.askopenfilenames` and
+    open them one by one instead.
+    (Contributed by Serhiy Storchaka in :gh:`152638`.)
 
 .. Add deprecations above alphabetically, not here at the end.