Python 3.16.0a0

hugovk · hugovk · commit f5c75351def8 · 2026-05-07T19:05:52.000+03:00
diff --git a/.github/ISSUE_TEMPLATE/bug.yml b/.github/ISSUE_TEMPLATE/bug.yml
@@ -34,13 +34,13 @@ body:
       label: "CPython versions tested on:"
       multiple: true
       options:
-        - "3.9"
         - "3.10"
         - "3.11"
         - "3.12"
         - "3.13"
         - "3.14"
         - "3.15"
+        - "3.16"
         - "CPython main branch"
     validations:
       required: true
diff --git a/.github/ISSUE_TEMPLATE/crash.yml b/.github/ISSUE_TEMPLATE/crash.yml
@@ -27,13 +27,13 @@ body:
       label: "CPython versions tested on:"
       multiple: true
       options:
-        - "3.9"
         - "3.10"
         - "3.11"
         - "3.12"
         - "3.13"
         - "3.14"
         - "3.15"
+        - "3.16"
         - "CPython main branch"
     validations:
       required: true
diff --git a/Doc/tutorial/interpreter.rst b/Doc/tutorial/interpreter.rst
@@ -16,7 +16,7 @@ Unix shell's search path makes it possible to start it by typing the command:
 
 .. code-block:: text
 
-   python3.15
+   python3.16
 
 to the shell. [#]_ Since the choice of the directory where the interpreter lives
 is an installation option, other places are possible; check with your local
@@ -97,8 +97,8 @@ before printing the first prompt:
 
 .. code-block:: shell-session
 
-   $ python3.15
-   Python 3.15 (default, May 7 2025, 15:46:04)
+   $ python3.16
+   Python 3.16 (default, May 7 2026, 19:03:04)
    [GCC 10.2.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>>
diff --git a/Doc/tutorial/stdlib.rst b/Doc/tutorial/stdlib.rst
@@ -15,7 +15,7 @@ operating system::
 
    >>> import os
    >>> os.getcwd()      # Return the current working directory
-   'C:\\Python315'
+   'C:\\Python316'
    >>> os.chdir('/server/accesslogs')   # Change current working directory
    >>> os.system('mkdir today')   # Run the command mkdir in the system shell
    0
diff --git a/Doc/tutorial/stdlib2.rst b/Doc/tutorial/stdlib2.rst
@@ -289,7 +289,7 @@ applications include caching objects that are expensive to create::
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
        d['primary']                # entry was automatically removed
-     File "C:/python315/lib/weakref.py", line 46, in __getitem__
+     File "C:/python316/lib/weakref.py", line 46, in __getitem__
        o = self.data[key]()
    KeyError: 'primary'
 
diff --git a/Doc/whatsnew/3.16.rst b/Doc/whatsnew/3.16.rst
@@ -0,0 +1,159 @@
+
+****************************
+  What's new in Python 3.16
+****************************
+
+:Editor: TBD
+
+.. Rules for maintenance:
+
+   * Anyone can add text to this document.  Do not spend very much time
+   on the wording of your changes, because your text will probably
+   get rewritten to some degree.
+
+   * The maintainer will go through Misc/NEWS periodically and add
+   changes; it's therefore more important to add your changes to
+   Misc/NEWS than to this file.
+
+   * This is not a complete list of every single change; completeness
+   is the purpose of Misc/NEWS.  Some changes I consider too small
+   or esoteric to include.  If such a change is added to the text,
+   I'll just remove it.  (This is another reason you shouldn't spend
+   too much time on writing your addition.)
+
+   * If you want to draw your new text to the attention of the
+   maintainer, add 'XXX' to the beginning of the paragraph or
+   section.
+
+   * It's OK to just add a fragmentary note about a change.  For
+   example: "XXX Describe the transmogrify() function added to the
+   socket module."  The maintainer will research the change and
+   write the necessary text.
+
+   * You can comment out your additions if you like, but it's not
+   necessary (especially when a final release is some months away).
+
+   * Credit the author of a patch or bugfix.   Just the name is
+   sufficient; the e-mail address isn't necessary.
+
+   * It's helpful to add the issue number as a comment:
+
+   XXX Describe the transmogrify() function added to the socket
+   module.
+   (Contributed by P.Y. Developer in :gh:`12345`.)
+
+   This saves the maintainer the effort of going through the VCS log
+   when researching a change.
+
+This article explains the new features in Python 3.16, compared to 3.15.
+
+For full details, see the :ref:`changelog <changelog>`.
+
+.. note::
+
+   Prerelease users should be aware that this document is currently in draft
+   form. It will be updated substantially as Python 3.16 moves towards release,
+   so it's worth checking back even after reading earlier versions.
+
+
+Summary --- release highlights
+==============================
+
+.. This section singles out the most important changes in Python 3.16.
+   Brevity is key.
+
+
+.. PEP-sized items next.
+
+
+
+New features
+============
+
+
+
+Other language changes
+======================
+
+
+
+New modules
+===========
+
+* None yet.
+
+
+Improved modules
+================
+
+module_name
+-----------
+
+* TODO
+
+.. Add improved modules above alphabetically, not here at the end.
+
+Optimizations
+=============
+
+module_name
+-----------
+
+* TODO
+
+
+
+Removed
+=======
+
+module_name
+-----------
+
+* TODO
+.. Add removals above alphabetically, not here at the end.
+
+
+Deprecated
+==========
+
+* module_name:
+  TODO
+
+
+.. Add deprecations above alphabetically, not here at the end.
+
+
+Porting to Python 3.16
+======================
+
+This section lists previously described changes and other bugfixes
+that may require changes to your code.
+
+
+Build changes
+=============
+
+
+C API changes
+=============
+
+New features
+------------
+
+* TODO
+
+Porting to Python 3.16
+----------------------
+
+* TODO
+
+Deprecated C APIs
+-----------------
+
+* TODO
+
+.. Add C API deprecations above alphabetically, not here at the end.
+
+Removed C APIs
+--------------
+
diff --git a/Doc/whatsnew/index.rst b/Doc/whatsnew/index.rst
@@ -11,6 +11,7 @@ anyone wishing to stay up-to-date after a new release.
 .. toctree::
    :maxdepth: 2
 
+   3.16.rst
    3.15.rst
    3.14.rst
    3.13.rst
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
@@ -21,13 +21,13 @@
 /* Version parsed out into numeric values */
 /*--start constants--*/
 #define PY_MAJOR_VERSION        3
-#define PY_MINOR_VERSION        15
+#define PY_MINOR_VERSION        16
 #define PY_MICRO_VERSION        0
-#define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_BETA
-#define PY_RELEASE_SERIAL       1
+#define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_ALPHA
+#define PY_RELEASE_SERIAL       0
 
 /* Version as a string */
-#define PY_VERSION              "3.15.0b1"
+#define PY_VERSION              "3.16.0a0"
 /*--end constants--*/
 
 
diff --git a/README.rst b/README.rst
@@ -1,5 +1,5 @@
-This is Python version 3.15.0 beta 1
-====================================
+This is Python version 3.16.0 alpha 0
+=====================================
 
 .. image:: https://github.com/python/cpython/actions/workflows/build.yml/badge.svg?branch=main&event=push
    :alt: CPython build status on GitHub Actions
@@ -136,7 +136,7 @@ What's New
 ----------
 
 We have a comprehensive overview of the changes in the `What's new in Python
-3.15 <https://docs.python.org/3.15/whatsnew/3.15.html>`_ document.  For a more
+3.16 <https://docs.python.org/3.16/whatsnew/3.16.html>`_ document.  For a more
 detailed change log, read `Misc/NEWS
 <https://github.com/python/cpython/tree/main/Misc/NEWS.d>`_, but a full
 accounting of changes can only be gleaned from the `commit history
@@ -149,7 +149,7 @@ entitled "Installing multiple versions".
 Documentation
 -------------
 
-`Documentation for Python 3.15 <https://docs.python.org/3.15/>`_ is online,
+`Documentation for Python 3.16 <https://docs.python.org/3.16/>`_ is online,
 updated daily.
 
 It can also be downloaded in many formats for faster access.  The documentation
@@ -208,7 +208,7 @@ and ``make altinstall`` in the others.
 Release Schedule
 ----------------
 
-See `PEP 790 <https://peps.python.org/pep-0790/>`__ for Python 3.15 release details.
+See `PEP 826 <https://peps.python.org/pep-0826/>`__ for Python 3.16 release details.
 
 
 Copyright and License Information
diff --git a/configure.ac b/configure.ac
@@ -10,7 +10,7 @@ dnl to regenerate the configure script.
 dnl
 
 # Set VERSION so we only need to edit in one place (i.e., here)
-m4_define([PYTHON_VERSION], [3.15])
+m4_define([PYTHON_VERSION], [3.16])
 
 AC_PREREQ([2.72])
 
@@ -205,7 +205,7 @@ AC_SUBST([FREEZE_MODULE_DEPS])
 AC_SUBST([PYTHON_FOR_BUILD_DEPS])
 
 AC_CHECK_PROGS([PYTHON_FOR_REGEN],
-  [python$PACKAGE_VERSION python3.15 python3.14 python3.13 python3.12 python3.11 python3.10 python3 python],
+  [python$PACKAGE_VERSION python3.16 python3.15 python3.14 python3.13 python3.12 python3.11 python3.10 python3 python],
   [python3])
 AC_SUBST([PYTHON_FOR_REGEN])
 

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,7 @@ operating system::`
`15`	`15`
`16`	`16`	`>>> import os`
`17`	`17`	`>>> os.getcwd() # Return the current working directory`
`18`		`- 'C:\\Python315'`
	`18`	`+ 'C:\\Python316'`
`19`	`19`	`>>> os.chdir('/server/accesslogs') # Change current working directory`
`20`	`20`	`>>> os.system('mkdir today') # Run the command mkdir in the system shell`
`21`	`21`	`0`