init: initial upload

.editorconfig

+root = true
+
+[*.{py,c,cpp,h,rst,md,yml}]
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+
+[*.{py,c,cpp,h}]
+indent_size = 4
+
+[*.yml]
+indent_size = 2

.gitattributes

+# Binary data types
+*.aif binary
+*.aifc binary
+*.aiff binary
+*.au binary
+*.bmp binary
+*.exe binary
+*.icns binary
+*.gif binary
+*.ico binary
+*.jpg binary
+*.pck binary
+*.png binary
+*.psd binary
+*.tar binary
+*.wav binary
+*.whl binary
+*.zip binary
+
+# Specific binary files
+Lib/test/sndhdrdata/sndhdr.* binary
+PC/classicAppCompat.* binary
+
+# Text files that should not be subject to eol conversion
+Lib/test/cjkencodings/* -text
+Lib/test/decimaltestdata/*.decTest -text
+Lib/test/test_email/data/*.txt -text
+Lib/test/xmltestdata/* -text
+Lib/test/coding20731.py -text
+Lib/test/test_importlib/data01/* -text
+
+# CRLF files
+*.bat text eol=crlf
+*.ps1 text eol=crlf
+*.sln text eol=crlf
+*.vcxproj* text eol=crlf
+*.props text eol=crlf
+*.proj text eol=crlf
+PCbuild/readme.txt text eol=crlf
+PC/readme.txt text eol=crlf
+
+# Generated files
+# https://github.com/github/linguist/blob/master/docs/overrides.md
+Include/graminit.h          linguist-generated=true
+Python/graminit.h           linguist-generated=true
+**/clinic/*.h               linguist-generated=true
+Python/importlib.h          linguist-generated=true
+Python/importlib_external.h linguist-generated=true
+Include/Python-ast.h        linguist-generated=true
+Python/Python-ast.c         linguist-generated=true
+Include/opcode.h            linguist-generated=true
+Python/opcode_targets.h     linguist-generated=true
+Objects/typeslots.inc       linguist-generated=true
+*_db.h                      linguist-generated=true
+Doc/library/token-list.inc  linguist-generated=true
+Include/token.h             linguist-generated=true
+Lib/token.py                linguist-generated=true
+Parser/token.c              linguist-generated=true

.github/CODEOWNERS

+# See https://help.github.com/articles/about-codeowners/
+# for more info about CODEOWNERS file
+
+# It uses the same pattern rule for gitignore file
+# https://git-scm.com/docs/gitignore#_pattern_format
+
+# asyncio
+**/*asyncio*                  @1st1 @asvetlov
+
+# Core
+**/*context*                  @1st1
+**/*genobject*                @1st1
+**/*hamt*                     @1st1
+Objects/set*                  @rhettinger
+Objects/dict*                 @methane
+
+# Hashing
+**/*hashlib*                  @python/crypto-team @tiran
+**/*pyhash*                   @python/crypto-team @tiran
+**/*sha*                      @python/crypto-team @tiran
+**/*md5*                      @python/crypto-team @tiran
+**/*blake*                    @python/crypto-team @tiran
+/Modules/_blake2/**           @python/crypto-team @tiran
+/Modules/_sha3/**             @python/crypto-team @tiran
+
+# logging
+**/*logging*                  @vsajip
+
+# venv
+**/*venv*                     @vsajip
+
+# Launcher
+/PC/launcher.c                @vsajip
+
+# HTML
+/Lib/html/                    @ezio-melotti
+/Lib/_markupbase.py           @ezio-melotti
+/Lib/test/test_html*.py       @ezio-melotti
+
+# Import (including importlib).
+# Ignoring importlib.h so as to not get flagged on
+# all pull requests that change the emitted
+# bytecode.
+**/*import*.c                 @brettcannon @encukou @ericsnowcurrently @ncoghlan @warsaw
+**/*import*.py                @brettcannon @encukou @ericsnowcurrently @ncoghlan @warsaw
+
+
+# SSL
+**/*ssl*                      @python/crypto-team @tiran
+**/*.pem                      @python/crypto-team @tiran
+
+# CSPRNG
+Python/bootstrap_hash.c       @python/crypto-team @tiran
+
+# Dates and times
+**/*datetime*                 @pganssle @abalkin
+**/*str*time*                 @pganssle @abalkin
+Doc/library/time.rst          @pganssle @abalkin
+Lib/test/test_time.py         @pganssle @abalkin
+Modules/timemodule.c          @pganssle @abalkin
+Python/pytime.c               @pganssle @abalkin
+Include/pytime.h              @pganssle @abalkin
+
+# Email and related
+**/*mail*                     @python/email-team
+**/*smtp*                     @python/email-team
+**/*mime*                     @python/email-team
+**/*imap*                     @python/email-team
+**/*poplib*                   @python/email-team
+
+# Garbage collector
+/Modules/gcmodule.c           @pablogsal
+/Doc/library/gc.rst           @pablogsal
+
+# Parser/Pgen
+/Parser/pgen/                 @pablogsal
+/Parser/pegen/                @pablogsal @lysnikolaou
+/Tools/peg_generator/         @pablogsal @lysnikolaou
+/Lib/test/test_peg_generator/ @pablogsal @lysnikolaou
+
+# SQLite 3
+**/*sqlite*                   @berkerpeksag @erlend-aasland
+
+# subprocess
+/Lib/subprocess.py            @gpshead
+/Lib/test/test_subprocess.py  @gpshead
+/Modules/*subprocess*         @gpshead
+
+# Windows
+/PC/                          @python/windows-team
+/PCbuild/                     @python/windows-team
+
+# Urllib
+**/*robotparser*              @berkerpeksag
+
+# Windows installer packages
+/Tools/msi/                   @python/windows-team
+/Tools/nuget/                 @python/windows-team
+
+# Misc
+**/*itertools*                @rhettinger
+**/*collections*              @rhettinger
+**/*random*                   @rhettinger
+**/*queue*                    @rhettinger
+**/*bisect*                   @rhettinger
+**/*heapq*                    @rhettinger
+**/*functools*                @rhettinger
+**/*decimal*                  @rhettinger @skrah
+
+**/*dataclasses*              @ericvsmith
+
+**/*idlelib*                  @terryjreedy
+
+**/*typing*                   @gvanrossum @Fidget-Spinner @JelleZijlstra
+
+**/*asyncore                  @giampaolo
+**/*asynchat                  @giampaolo
+**/*ftplib                    @giampaolo
+**/*shutil                    @giampaolo
+
+**/*enum*                     @ethanfurman
+**/*cgi*                      @ethanfurman
+**/*tarfile*                  @ethanfurman
+
+# macOS
+/Mac/                         @python/macos-team
+**/*osx_support*              @python/macos-team

.github/FUNDING.yml

+custom: https://www.python.org/psf/donations/python-dev/

.github/PULL_REQUEST_TEMPLATE.md

+<!--
+Thanks for your contribution!
+Please read this comment in its entirety. It's quite important.
+
+# Pull Request title
+
+It should be in the following format:
+
+```
+bpo-NNNN: Summary of the changes made
+```
+
+Where: bpo-NNNN refers to the issue number in the https://bugs.python.org.
+
+Most PRs will require an issue number. Trivial changes, like fixing a typo, do not need an issue.
+
+# Backport Pull Request title
+
+If this is a backport PR (PR made against branches other than `master`),
+please ensure that the PR title is in the following format:
+
+```
+[X.Y] <title from the original PR> (GH-NNNN)
+```
+
+Where: [X.Y] is the branch name, e.g. [3.6].
+
+GH-NNNN refers to the PR number from `master`.
+
+-->

.github/SECURITY.md

+# Security Policy
+
+## Supported Versions
+
+The Python team applies security fixes according to the table
+in [the devguide](
+https://devguide.python.org/#status-of-python-branches
+).
+
+## Reporting a Vulnerability
+
+Please read the guidelines on reporting security issues [on the
+official website](https://www.python.org/dev/security/) for
+instructions on how to report a security-related problem to
+the Python team responsibly.
+
+To reach the response team, email `security at python dot org`. 

.github/codecov.yml

+codecov:
+  strict_yaml_branch: master
+  notify:
+    require_ci_to_pass: true
+comment: off
+ignore:
+  - "Doc/**/*"
+  - "Misc/**/*"
+  - "Mac/**/*"
+  - "PC/**/*"
+  - "PCbuild/**/*"
+  - "Tools/**/*"
+  - "Grammar/*"
+coverage:
+  precision: 2
+  range: 70...90
+  round: down
+  status:
+    changes: off
+    project: off
+    patch: off
+parsers:
+  gcov:
+    branch_detection:
+      conditional: true
+      loop: true
+      macro: false
+      method: false
+  javascript:
+    enable_partials: false

.github/workflows/posix-deps-apt.sh

+#!/bin/sh
+apt-get update
+
+apt-get -yq install \
+    build-essential \
+    ccache \
+    gdb \
+    lcov \
+    libbz2-dev \
+    libffi-dev \
+    libgdbm-dev \
+    libgdbm-compat-dev \
+    liblzma-dev \
+    libncurses5-dev \
+    libreadline6-dev \
+    libsqlite3-dev \
+    libssl-dev \
+    lzma \
+    lzma-dev \
+    tk-dev \
+    uuid-dev \
+    xvfb \
+    zlib1g-dev

.github/workflows/verify-ensurepip-wheels.yml

+name: Verify bundled pip and setuptools
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - 'Lib/ensurepip/_bundled/**'
+      - '.github/workflows/verify-ensurepip-wheels.yml'
+      - 'Tools/scripts/verify_ensurepip_wheels.py'
+  pull_request:
+    paths:
+      - 'Lib/ensurepip/_bundled/**'
+      - '.github/workflows/verify-ensurepip-wheels.yml'
+      - 'Tools/scripts/verify_ensurepip_wheels.py'
+
+permissions:
+  contents: read
+
+jobs:
+  verify:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3'
+      - name: Compare checksums of bundled pip and setuptools to ones published on PyPI
+        run: ./Tools/scripts/verify_ensurepip_wheels.py

.gitignore

+#####
+# First, rules intended to apply in all subdirectories.
+# These contain no slash, or only a trailing slash.
+
+*.cover
+*.iml
+*.o
+*.a
+*.so
+*.so.*
+*.dylib
+*.dll
+*.orig
+*.pyc
+*.pyd
+*.pyo
+*.rej
+*.swp
+*~
+*.gc??
+*.profclang?
+*.profraw
+*.dyn
+.gdb_history
+.purify
+__pycache__
+.hg/
+.svn/
+.idea/
+tags
+TAGS
+.vs/
+.vscode/
+gmon.out
+.coverage
+.mypy_cache/
+.pytest_cache/
+.DS_Store
+
+*.exe
+!Lib/distutils/command/*.exe
+
+# Ignore core dumps... but not Tools/msi/core/ or the like.
+core
+!core/
+
+
+#####
+# Then, rules meant for a specific location relative to the repo root.
+# These must contain a non-trailing slash (and may also have a trailing slash.)
+
+Doc/build/
+Doc/venv/
+Doc/.venv/
+Doc/env/
+Doc/.env/
+Include/pydtrace_probes.h
+Lib/distutils/command/*.pdb
+Lib/lib2to3/*.pickle
+Lib/test/data/*
+!Lib/test/data/README
+/Makefile
+/Makefile.pre
+Mac/Makefile
+Mac/PythonLauncher/Info.plist
+Mac/PythonLauncher/Makefile
+Mac/PythonLauncher/Python Launcher
+Mac/PythonLauncher/Python Launcher.app/*
+Mac/Resources/app/Info.plist
+Mac/Resources/framework/Info.plist
+Mac/pythonw
+/*.framework/
+Misc/python.pc
+Misc/python-embed.pc
+Misc/python-config.sh
+Modules/Setup.config
+Modules/Setup.local
+Modules/config.c
+Modules/ld_so_aix
+Programs/_freeze_importlib
+Programs/_testembed
+PC/python_nt*.h
+PC/pythonnt_rc*.h
+Modules/python.exp
+PC/*/*.exp
+PC/*/*.lib
+PC/*/*.bsc
+PC/*/*.dll
+PC/*/*.pdb
+PC/*/*.user
+PC/*/*.ncb
+PC/*/*.suo
+PC/*/Win32-temp-*
+PC/*/x64-temp-*
+PC/*/amd64
+PCbuild/*.user
+PCbuild/*.suo
+PCbuild/*.*sdf
+PCbuild/*-pgi
+PCbuild/*-pgo
+PCbuild/*.VC.db
+PCbuild/*.VC.opendb
+PCbuild/amd64/
+PCbuild/arm32/
+PCbuild/arm64/
+PCbuild/obj/
+PCbuild/win32/
+Tools/unicode/data/
+/autom4te.cache
+/build/
+/config.cache
+/config.log
+/config.status
+/config.status.lineno
+# hendrikmuhs/ccache-action@v1
+/.ccache
+/platform
+/profile-clean-stamp
+/profile-run-stamp
+/pybuilddir.txt
+/pyconfig.h
+/python-config
+/python-config.py
+/python.bat
+/python-gdb.py
+/python.exe-gdb.py
+/reflog.txt
+/coverage/
+/externals/
+/htmlcov/
+Tools/msi/obj
+Tools/ssl/amd64
+Tools/ssl/win32
+
+# Two-trick pony for OSX and other case insensitive file systems:
+# Ignore ./python binary on Unix but still look into ./Python/ directory.
+/python
+!/Python/
+
+# Artifacts generated by 3.11 lying around when switching branches:
+/_bootstrap_python
+/Programs/_freeze_module
+/Python/deepfreeze/
+/Python/frozen_modules/
+
+# Nuitka-Python specifics here:
+nuget-result*
+output
+output32
+
+

Doc/c-api/typehints.rst

+.. highlight:: c
+
+.. _typehintobjects:
+
+Objects for Type Hinting
+------------------------
+
+Various built-in types for type hinting are provided.
+Only :ref:`GenericAlias <types-genericalias>` is exposed to C.
+
+.. c:function:: PyObject* Py_GenericAlias(PyObject *origin, PyObject *args)
+
+   Create a :ref:`GenericAlias <types-genericalias>` object.
+   Equivalent to calling the Python class
+   :class:`types.GenericAlias`.  The *origin* and *args* arguments set the
+   ``GenericAlias``\ 's ``__origin__`` and ``__args__`` attributes respectively.
+   *origin* should be a :c:type:`PyTypeObject*`, and *args* can be a
+   :c:type:`PyTupleObject*` or any ``PyObject*``.  If *args* passed is
+   not a tuple, a 1-tuple is automatically constructed and ``__args__`` is set
+   to ``(args,)``.
+   Minimal checking is done for the arguments, so the function will succeed even
+   if *origin* is not a type.
+   The ``GenericAlias``\ 's ``__parameters__`` attribute is constructed lazily
+   from ``__args__``.  On failure, an exception is raised and ``NULL`` is
+   returned.
+
+   Here's an example of how to make an extension type generic::
+
+      ...
+      static PyMethodDef my_obj_methods[] = {
+          // Other methods.
+          ...
+          {"__class_getitem__", (PyCFunction)Py_GenericAlias, METH_O|METH_CLASS, "See PEP 585"}
+          ...
+      }
+
+   .. seealso:: The data model method :meth:`__class_getitem__`.
+
+   .. versionadded:: 3.9
+
+.. c:var:: PyTypeObject Py_GenericAliasType
+
+   The C type of the object returned by :c:func:`Py_GenericAlias`. Equivalent to
+   :class:`types.GenericAlias` in Python.
+
+   .. versionadded:: 3.9

Doc/library/security_warnings.rst

+.. _security-warnings:
+
+.. index:: single: security considerations
+
+Security Considerations
+=======================
+
+The following modules have specific security considerations:
+
+* :mod:`cgi`: :ref:`CGI security considerations <cgi-security>`
+* :mod:`hashlib`: :ref:`all constructors take a "usedforsecurity" keyword-only
+  argument disabling known insecure and blocked algorithms
+  <hashlib-usedforsecurity>`
+* :mod:`http.server` is not suitable for production use, only implementing
+  basic security checks. See the :ref:`security considerations <http.server-security>`.
+* :mod:`logging`: :ref:`Logging configuration uses eval()
+  <logging-eval-security>`
+* :mod:`multiprocessing`: :ref:`Connection.recv() uses pickle
+  <multiprocessing-recv-pickle-security>`
+* :mod:`pickle`: :ref:`Restricting globals in pickle <pickle-restrict>`
+* :mod:`random` shouldn't be used for security purposes, use :mod:`secrets`
+  instead
+* :mod:`shelve`: :ref:`shelve is based on pickle and thus unsuitable for
+  dealing with untrusted sources <shelve-security>`
+* :mod:`ssl`: :ref:`SSL/TLS security considerations <ssl-security>`
+* :mod:`subprocess`: :ref:`Subprocess security considerations
+  <subprocess-security>`
+* :mod:`tempfile`: :ref:`mktemp is deprecated due to vulnerability to race
+  conditions <tempfile-mktemp-deprecated>`
+* :mod:`xml`: :ref:`XML vulnerabilities <xml-vulnerabilities>`
+* :mod:`zipfile`: :ref:`maliciously prepared .zip files can cause disk volume
+  exhaustion <zipfile-resources-limitations>`

Grammar/Grammar

+# Grammar for Python
+
+# NOTE WELL: You should also follow all the steps listed at
+# https://devguide.python.org/grammar/
+
+# Start symbols for the grammar:
+#       single_input is a single interactive statement;
+#       file_input is a module or sequence of commands read from an input file;
+#       eval_input is the input for the eval() functions.
+#       func_type_input is a PEP 484 Python 2 function type comment
+# NB: compound_stmt in single_input is followed by extra NEWLINE!
+# NB: due to the way TYPE_COMMENT is tokenized it will always be followed by a NEWLINE
+single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
+file_input: (NEWLINE | stmt)* ENDMARKER
+eval_input: testlist NEWLINE* ENDMARKER
+
+decorator: '@' namedexpr_test NEWLINE
+decorators: decorator+
+decorated: decorators (classdef | funcdef | async_funcdef)
+
+async_funcdef: ASYNC funcdef
+funcdef: 'def' NAME parameters ['->' test] ':' [TYPE_COMMENT] func_body_suite
+
+parameters: '(' [typedargslist] ')'
+
+# The following definition for typedarglist is equivalent to this set of rules:
+#
+#     arguments = argument (',' [TYPE_COMMENT] argument)*
+#     argument = tfpdef ['=' test]
+#     kwargs = '**' tfpdef [','] [TYPE_COMMENT]
+#     args = '*' [tfpdef]
+#     kwonly_kwargs = (',' [TYPE_COMMENT] argument)* (TYPE_COMMENT | [',' [TYPE_COMMENT] [kwargs]])
+#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
+#     poskeyword_args_kwonly_kwargs = arguments ( TYPE_COMMENT | [',' [TYPE_COMMENT] [args_kwonly_kwargs]])
+#     typedargslist_no_posonly  = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
+#     typedarglist = (arguments ',' [TYPE_COMMENT] '/' [',' [[TYPE_COMMENT] typedargslist_no_posonly]])|(typedargslist_no_posonly)"
+#
+# It needs to be fully expanded to allow our LL(1) parser to work on it.
+
+typedargslist: (
+  (tfpdef ['=' test] (',' [TYPE_COMMENT] tfpdef ['=' test])* ',' [TYPE_COMMENT] '/' [',' [ [TYPE_COMMENT] tfpdef ['=' test] (
+        ',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] [
+        '*' [tfpdef] (',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] ['**' tfpdef [','] [TYPE_COMMENT]]])
+      | '**' tfpdef [','] [TYPE_COMMENT]]])
+  | '*' [tfpdef] (',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] ['**' tfpdef [','] [TYPE_COMMENT]]])
+  | '**' tfpdef [','] [TYPE_COMMENT]]] )
+|  (tfpdef ['=' test] (',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] [
+   '*' [tfpdef] (',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] ['**' tfpdef [','] [TYPE_COMMENT]]])
+  | '**' tfpdef [','] [TYPE_COMMENT]]])
+  | '*' [tfpdef] (',' [TYPE_COMMENT] tfpdef ['=' test])* (TYPE_COMMENT | [',' [TYPE_COMMENT] ['**' tfpdef [','] [TYPE_COMMENT]]])
+  | '**' tfpdef [','] [TYPE_COMMENT])
+)
+tfpdef: NAME [':' test]
+
+# The following definition for varargslist is equivalent to this set of rules:
+#
+#     arguments = argument (',' argument )*
+#     argument = vfpdef ['=' test]
+#     kwargs = '**' vfpdef [',']
+#     args = '*' [vfpdef]
+#     kwonly_kwargs = (',' argument )* [',' [kwargs]]
+#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
+#     poskeyword_args_kwonly_kwargs = arguments [',' [args_kwonly_kwargs]]
+#     vararglist_no_posonly = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
+#     varargslist = arguments ',' '/' [','[(vararglist_no_posonly)]] | (vararglist_no_posonly)
+#
+# It needs to be fully expanded to allow our LL(1) parser to work on it.
+
+varargslist: vfpdef ['=' test ](',' vfpdef ['=' test])* ',' '/' [',' [ (vfpdef ['=' test] (',' vfpdef ['=' test])* [',' [
+        '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
+      | '**' vfpdef [',']]]
+  | '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
+  | '**' vfpdef [',']) ]] | (vfpdef ['=' test] (',' vfpdef ['=' test])* [',' [
+        '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
+      | '**' vfpdef [',']]]
+  | '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
+  | '**' vfpdef [',']
+)
+vfpdef: NAME
+
+stmt: simple_stmt | compound_stmt
+simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
+small_stmt: (expr_stmt | del_stmt | pass_stmt | flow_stmt |
+             import_stmt | global_stmt | nonlocal_stmt | assert_stmt)
+expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
+                     [('=' (yield_expr|testlist_star_expr))+ [TYPE_COMMENT]] )
+annassign: ':' test ['=' (yield_expr|testlist_star_expr)]
+testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
+augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
+            '<<=' | '>>=' | '**=' | '//=')
+# For normal and annotated assignments, additional restrictions enforced by the interpreter
+del_stmt: 'del' exprlist
+pass_stmt: 'pass'
+flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | yield_stmt
+break_stmt: 'break'
+continue_stmt: 'continue'
+return_stmt: 'return' [testlist_star_expr]
+yield_stmt: yield_expr
+raise_stmt: 'raise' [test ['from' test]]
+import_stmt: import_name | import_from
+import_name: 'import' dotted_as_names
+# note below: the ('.' | '...') is necessary because '...' is tokenized as ELLIPSIS
+import_from: ('from' (('.' | '...')* dotted_name | ('.' | '...')+)
+              'import' ('*' | '(' import_as_names ')' | import_as_names))
+import_as_name: NAME ['as' NAME]
+dotted_as_name: dotted_name ['as' NAME]
+import_as_names: import_as_name (',' import_as_name)* [',']
+dotted_as_names: dotted_as_name (',' dotted_as_name)*
+dotted_name: NAME ('.' NAME)*
+global_stmt: 'global' NAME (',' NAME)*
+nonlocal_stmt: 'nonlocal' NAME (',' NAME)*
+assert_stmt: 'assert' test [',' test]
+
+compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | with_stmt | funcdef | classdef | decorated | async_stmt
+async_stmt: ASYNC (funcdef | with_stmt | for_stmt)
+if_stmt: 'if' namedexpr_test ':' suite ('elif' namedexpr_test ':' suite)* ['else' ':' suite]
+while_stmt: 'while' namedexpr_test ':' suite ['else' ':' suite]
+for_stmt: 'for' exprlist 'in' testlist ':' [TYPE_COMMENT] suite ['else' ':' suite]
+try_stmt: ('try' ':' suite
+           ((except_clause ':' suite)+
+            ['else' ':' suite]
+            ['finally' ':' suite] |
+           'finally' ':' suite))
+with_stmt: 'with' with_item (',' with_item)*  ':' [TYPE_COMMENT] suite
+with_item: test ['as' expr]
+# NB compile.c makes sure that the default except clause is last
+except_clause: 'except' [test ['as' NAME]]
+suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT
+
+namedexpr_test: test [':=' test]
+test: or_test ['if' or_test 'else' test] | lambdef
+test_nocond: or_test | lambdef_nocond
+lambdef: 'lambda' [varargslist] ':' test
+lambdef_nocond: 'lambda' [varargslist] ':' test_nocond
+or_test: and_test ('or' and_test)*
+and_test: not_test ('and' not_test)*
+not_test: 'not' not_test | comparison
+comparison: expr (comp_op expr)*
+# <> isn't actually a valid comparison operator in Python. It's here for the
+# sake of a __future__ import described in PEP 401 (which really works :-)
+comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
+star_expr: '*' expr
+expr: xor_expr ('|' xor_expr)*
+xor_expr: and_expr ('^' and_expr)*
+and_expr: shift_expr ('&' shift_expr)*
+shift_expr: arith_expr (('<<'|'>>') arith_expr)*
+arith_expr: term (('+'|'-') term)*
+term: factor (('*'|'@'|'/'|'%'|'//') factor)*
+factor: ('+'|'-'|'~') factor | power
+power: atom_expr ['**' factor]
+atom_expr: [AWAIT] atom trailer*
+atom: ('(' [yield_expr|testlist_comp] ')' |
+       '[' [testlist_comp] ']' |
+       '{' [dictorsetmaker] '}' |
+       NAME | NUMBER | STRING+ | '...' | 'None' | 'True' | 'False')
+testlist_comp: (namedexpr_test|star_expr) ( comp_for | (',' (namedexpr_test|star_expr))* [','] )
+trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
+subscriptlist: subscript (',' subscript)* [',']
+subscript: test | [test] ':' [test] [sliceop]
+sliceop: ':' [test]
+exprlist: (expr|star_expr) (',' (expr|star_expr))* [',']
+testlist: test (',' test)* [',']
+dictorsetmaker: ( ((test ':' test | '**' expr)
+                   (comp_for | (',' (test ':' test | '**' expr))* [','])) |
+                  ((test | star_expr)
+                   (comp_for | (',' (test | star_expr))* [','])) )
+
+classdef: 'class' NAME ['(' [arglist] ')'] ':' suite
+
+arglist: argument (',' argument)*  [',']
+
+# The reason that keywords are test nodes instead of NAME is that using NAME
+# results in an ambiguity. ast.c makes sure it's a NAME.
+# "test '=' test" is really "keyword '=' test", but we have no such token.
+# These need to be in a single rule to avoid grammar that is ambiguous
+# to our LL(1) parser. Even though 'test' includes '*expr' in star_expr,
+# we explicitly match '*' here, too, to give it proper precedence.
+# Illegal combinations and orderings are blocked in ast.c:
+# multiple (test comp_for) arguments are blocked; keyword unpackings
+# that precede iterable unpackings are blocked; etc.
+argument: ( test [comp_for] |
+            test ':=' test |
+            test '=' test |
+            '**' test |
+            '*' test )
+
+comp_iter: comp_for | comp_if
+sync_comp_for: 'for' exprlist 'in' or_test [comp_iter]
+comp_for: [ASYNC] sync_comp_for
+comp_if: 'if' test_nocond [comp_iter]
+
+# not used in grammar, but may appear in "node" passed from Parser to Compiler
+encoding_decl: NAME
+
+yield_expr: 'yield' [yield_arg]
+yield_arg: 'from' test | testlist_star_expr
+
+# the TYPE_COMMENT in suites is only parsed for funcdefs,
+# but can't go elsewhere due to ambiguity
+func_body_suite: simple_stmt | NEWLINE [TYPE_COMMENT NEWLINE] INDENT stmt+ DEDENT
+
+func_type_input: func_type NEWLINE* ENDMARKER
+func_type: '(' [typelist] ')' '->' test
+# typelist is a modified typedargslist (see above)
+typelist: (test (',' test)* [','
+       ['*' [test] (',' test)* [',' '**' test] | '**' test]]
+     |  '*' [test] (',' test)* [',' '**' test] | '**' test)

Grammar/Tokens

+ENDMARKER
+NAME
+NUMBER
+STRING
+NEWLINE
+INDENT
+DEDENT
+
+LPAR                    '('
+RPAR                    ')'
+LSQB                    '['
+RSQB                    ']'
+COLON                   ':'
+COMMA                   ','
+SEMI                    ';'
+PLUS                    '+'
+MINUS                   '-'
+STAR                    '*'
+SLASH                   '/'
+VBAR                    '|'
+AMPER                   '&'
+LESS                    '<'
+GREATER                 '>'
+EQUAL                   '='
+DOT                     '.'
+PERCENT                 '%'
+LBRACE                  '{'
+RBRACE                  '}'
+EQEQUAL                 '=='
+NOTEQUAL                '!='
+LESSEQUAL               '<='
+GREATEREQUAL            '>='
+TILDE                   '~'
+CIRCUMFLEX              '^'
+LEFTSHIFT               '<<'
+RIGHTSHIFT              '>>'
+DOUBLESTAR              '**'
+PLUSEQUAL               '+='
+MINEQUAL                '-='
+STAREQUAL               '*='
+SLASHEQUAL              '/='
+PERCENTEQUAL            '%='
+AMPEREQUAL              '&='
+VBAREQUAL               '|='
+CIRCUMFLEXEQUAL         '^='
+LEFTSHIFTEQUAL          '<<='
+RIGHTSHIFTEQUAL         '>>='
+DOUBLESTAREQUAL         '**='
+DOUBLESLASH             '//'
+DOUBLESLASHEQUAL        '//='
+AT                      '@'
+ATEQUAL                 '@='
+RARROW                  '->'
+ELLIPSIS                '...'
+COLONEQUAL              ':='
+
+OP
+AWAIT
+ASYNC
+TYPE_IGNORE
+TYPE_COMMENT
+ERRORTOKEN
+
+# These aren't used by the C tokenizer but are needed for tokenize.py
+COMMENT
+NL
+ENCODING

Include/Python.h

+#ifndef Py_PYTHON_H
+#define Py_PYTHON_H
+/* Since this is a "meta-include" file, no #ifdef __cplusplus / extern "C" { */
+
+/* Include nearly all Python header files */
+
+#include "patchlevel.h"
+#include "pyconfig.h"
+#include "pymacconfig.h"
+
+#include <limits.h>
+
+#ifndef UCHAR_MAX
+#error "Something's broken.  UCHAR_MAX should be defined in limits.h."
+#endif
+
+#if UCHAR_MAX != 255
+#error "Python's source code assumes C's unsigned char is an 8-bit type."
+#endif
+
+#if defined(__sgi) && !defined(_SGI_MP_SOURCE)
+#define _SGI_MP_SOURCE
+#endif
+
+#include <stdio.h>
+#ifndef NULL
+#   error "Python.h requires that stdio.h define NULL."
+#endif
+
+#include <string.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <stdlib.h>
+#ifndef MS_WINDOWS
+#include <unistd.h>
+#endif
+
+/* For size_t? */
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+/* CAUTION:  Build setups should ensure that NDEBUG is defined on the
+ * compiler command line when building Python in release mode; else
+ * assert() calls won't be removed.
+ */
+#include <assert.h>
+
+#include "pyport.h"
+#include "pymacro.h"
+
+/* A convenient way for code to know if sanitizers are enabled. */
+#if defined(__has_feature)
+#  if __has_feature(memory_sanitizer)
+#    if !defined(_Py_MEMORY_SANITIZER)
+#      define _Py_MEMORY_SANITIZER
+#    endif
+#  endif
+#  if __has_feature(address_sanitizer)
+#    if !defined(_Py_ADDRESS_SANITIZER)
+#      define _Py_ADDRESS_SANITIZER
+#    endif
+#  endif
+#elif defined(__GNUC__)
+#  if defined(__SANITIZE_ADDRESS__)
+#    define _Py_ADDRESS_SANITIZER
+#  endif
+#endif
+
+/* Debug-mode build with pymalloc implies PYMALLOC_DEBUG.
+ *  PYMALLOC_DEBUG is in error if pymalloc is not in use.
+ */
+#if defined(Py_DEBUG) && defined(WITH_PYMALLOC) && !defined(PYMALLOC_DEBUG)
+#define PYMALLOC_DEBUG
+#endif
+#if defined(PYMALLOC_DEBUG) && !defined(WITH_PYMALLOC)
+#error "PYMALLOC_DEBUG requires WITH_PYMALLOC"
+#endif
+#include "pymath.h"
+#include "pytime.h"
+#include "pymem.h"
+
+#include "object.h"
+#include "objimpl.h"
+#include "typeslots.h"
+#include "pyhash.h"
+
+#include "pydebug.h"
+
+#include "bytearrayobject.h"
+#include "bytesobject.h"
+#include "unicodeobject.h"
+#include "longobject.h"
+#include "longintrepr.h"
+#include "boolobject.h"
+#include "floatobject.h"
+#include "complexobject.h"
+#include "rangeobject.h"
+#include "memoryobject.h"
+#include "tupleobject.h"
+#include "listobject.h"
+#include "dictobject.h"
+#include "odictobject.h"
+#include "enumobject.h"
+#include "setobject.h"
+#include "methodobject.h"
+#include "moduleobject.h"
+#include "funcobject.h"
+#include "classobject.h"
+#include "fileobject.h"
+#include "pycapsule.h"
+#include "code.h"
+#include "pyframe.h"
+#include "traceback.h"
+#include "sliceobject.h"
+#include "cellobject.h"
+#include "iterobject.h"
+#include "cpython/initconfig.h"
+#include "genobject.h"
+#include "descrobject.h"
+#include "genericaliasobject.h"
+#include "warnings.h"
+#include "weakrefobject.h"
+#include "structseq.h"
+#include "namespaceobject.h"
+#include "picklebufobject.h"
+
+#include "codecs.h"
+#include "pyerrors.h"
+#include "pythread.h"
+#include "pystate.h"
+#include "context.h"
+
+#include "pyarena.h"
+#include "modsupport.h"
+#include "compile.h"
+#include "pythonrun.h"
+#include "pylifecycle.h"
+#include "ceval.h"
+#include "sysmodule.h"
+#include "osmodule.h"
+#include "intrcheck.h"
+#include "import.h"
+
+#include "abstract.h"
+#include "bltinmodule.h"
+
+#include "eval.h"
+
+#include "pyctype.h"
+#include "pystrtod.h"
+#include "pystrcmp.h"
+#include "fileutils.h"
+#include "pyfpe.h"
+#include "tracemalloc.h"
+
+#include "staticinit.h"
+
+#endif /* !Py_PYTHON_H */

Include/asdl.h

+#ifndef Py_LIMITED_API
+#ifndef Py_ASDL_H
+#define Py_ASDL_H
+
+typedef PyObject * identifier;
+typedef PyObject * string;
+typedef PyObject * object;
+typedef PyObject * constant;
+
+/* It would be nice if the code generated by asdl_c.py was completely
+   independent of Python, but it is a goal the requires too much work
+   at this stage.  So, for example, I'll represent identifiers as
+   interned Python strings.
+*/
+
+/* XXX A sequence should be typed so that its use can be typechecked. */
+
+typedef struct {
+    Py_ssize_t size;
+    void *elements[1];
+} asdl_seq;
+
+typedef struct {
+    Py_ssize_t size;
+    int elements[1];
+} asdl_int_seq;
+
+asdl_seq *_Py_asdl_seq_new(Py_ssize_t size, PyArena *arena);
+asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena);
+
+#define asdl_seq_GET(S, I) (S)->elements[(I)]
+#define asdl_seq_LEN(S) ((S) == NULL ? 0 : (S)->size)
+#ifdef Py_DEBUG
+#define asdl_seq_SET(S, I, V) \
+    do { \
+        Py_ssize_t _asdl_i = (I); \
+        assert((S) != NULL); \
+        assert(0 <= _asdl_i && _asdl_i < (S)->size); \
+        (S)->elements[_asdl_i] = (V); \
+    } while (0)
+#else
+#define asdl_seq_SET(S, I, V) (S)->elements[I] = (V)
+#endif
+
+#endif /* !Py_ASDL_H */
+#endif /* Py_LIMITED_API */

Include/ast.h

+#ifndef Py_LIMITED_API
+#ifndef Py_AST_H
+#define Py_AST_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "Python-ast.h"   /* mod_ty */
+#include "node.h"         /* node */
+
+PyAPI_FUNC(int) PyAST_Validate(mod_ty);
+PyAPI_FUNC(mod_ty) PyAST_FromNode(
+    const node *n,
+    PyCompilerFlags *flags,
+    const char *filename,       /* decoded from the filesystem encoding */
+    PyArena *arena);
+PyAPI_FUNC(mod_ty) PyAST_FromNodeObject(
+    const node *n,
+    PyCompilerFlags *flags,
+    PyObject *filename,
+    PyArena *arena);
+
+/* _PyAST_ExprAsUnicode is defined in ast_unparse.c */
+PyAPI_FUNC(PyObject *) _PyAST_ExprAsUnicode(expr_ty);
+
+/* Return the borrowed reference to the first literal string in the
+   sequence of statements or NULL if it doesn't start from a literal string.
+   Doesn't set exception. */
+PyAPI_FUNC(PyObject *) _PyAST_GetDocString(asdl_seq *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_AST_H */
+#endif /* !Py_LIMITED_API */

Include/bitset.h

+
+#ifndef Py_BITSET_H
+#define Py_BITSET_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Bitset interface */
+
+#define BYTE            char
+typedef BYTE *bitset;
+
+#define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)
+
+#define BITSPERBYTE     (8*sizeof(BYTE))
+#define BIT2BYTE(ibit)  ((ibit) / BITSPERBYTE)
+#define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE)
+#define BIT2MASK(ibit)  (1 << BIT2SHIFT(ibit))
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BITSET_H */

Include/bltinmodule.h

+#ifndef Py_BLTINMODULE_H
+#define Py_BLTINMODULE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_DATA(PyTypeObject) PyFilter_Type;
+PyAPI_DATA(PyTypeObject) PyMap_Type;
+PyAPI_DATA(PyTypeObject) PyZip_Type;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BLTINMODULE_H */

Include/boolobject.h

+/* Boolean object interface */
+
+#ifndef Py_BOOLOBJECT_H
+#define Py_BOOLOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+PyAPI_DATA(PyTypeObject) PyBool_Type;
+
+#define PyBool_Check(x) Py_IS_TYPE(x, &PyBool_Type)
+
+/* Py_False and Py_True are the only two bools in existence.
+Don't forget to apply Py_INCREF() when returning either!!! */
+
+/* Don't use these directly */
+PyAPI_DATA(struct _longobject) _Py_FalseStruct, _Py_TrueStruct;
+
+/* Use these macros */
+#define Py_False ((PyObject *) &_Py_FalseStruct)
+#define Py_True ((PyObject *) &_Py_TrueStruct)
+
+/* Macros for returning Py_True or Py_False, respectively */
+#define Py_RETURN_TRUE return Py_INCREF(Py_True), Py_True
+#define Py_RETURN_FALSE return Py_INCREF(Py_False), Py_False
+
+/* Function to return a bool from a C long */
+PyAPI_FUNC(PyObject *) PyBool_FromLong(long);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BOOLOBJECT_H */

Include/bytearrayobject.h

+/* ByteArray object interface */
+
+#ifndef Py_BYTEARRAYOBJECT_H
+#define Py_BYTEARRAYOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdarg.h>
+
+/* Type PyByteArrayObject represents a mutable array of bytes.
+ * The Python API is that of a sequence;
+ * the bytes are mapped to ints in [0, 256).
+ * Bytes are not characters; they may be used to encode characters.
+ * The only way to go between bytes and str/unicode is via encoding
+ * and decoding.
+ * For the convenience of C programmers, the bytes type is considered
+ * to contain a char pointer, not an unsigned char pointer.
+ */
+
+/* Type object */
+PyAPI_DATA(PyTypeObject) PyByteArray_Type;
+PyAPI_DATA(PyTypeObject) PyByteArrayIter_Type;
+
+/* Type check macros */
+#define PyByteArray_Check(self) PyObject_TypeCheck(self, &PyByteArray_Type)
+#define PyByteArray_CheckExact(self) Py_IS_TYPE(self, &PyByteArray_Type)
+
+/* Direct API functions */
+PyAPI_FUNC(PyObject *) PyByteArray_FromObject(PyObject *);
+PyAPI_FUNC(PyObject *) PyByteArray_Concat(PyObject *, PyObject *);
+PyAPI_FUNC(PyObject *) PyByteArray_FromStringAndSize(const char *, Py_ssize_t);
+PyAPI_FUNC(Py_ssize_t) PyByteArray_Size(PyObject *);
+PyAPI_FUNC(char *) PyByteArray_AsString(PyObject *);
+PyAPI_FUNC(int) PyByteArray_Resize(PyObject *, Py_ssize_t);
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_BYTEARRAYOBJECT_H
+#  include  "cpython/bytearrayobject.h"
+#  undef Py_CPYTHON_BYTEARRAYOBJECT_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BYTEARRAYOBJECT_H */

Include/bytesobject.h

+
+/* Bytes (String) object interface */
+
+#ifndef Py_BYTESOBJECT_H
+#define Py_BYTESOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdarg.h>
+
+/*
+Type PyBytesObject represents a character string.  An extra zero byte is
+reserved at the end to ensure it is zero-terminated, but a size is
+present so strings with null bytes in them can be represented.  This
+is an immutable object type.
+
+There are functions to create new string objects, to test
+an object for string-ness, and to get the
+string value.  The latter function returns a null pointer
+if the object is not of the proper type.
+There is a variant that takes an explicit size as well as a
+variant that assumes a zero-terminated string.  Note that none of the
+functions should be applied to nil objects.
+*/
+
+/* Caching the hash (ob_shash) saves recalculation of a string's hash value.
+   This significantly speeds up dict lookups. */
+
+PyAPI_DATA(PyTypeObject) PyBytes_Type;
+PyAPI_DATA(PyTypeObject) PyBytesIter_Type;
+
+#define PyBytes_Check(op) \
+                 PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_BYTES_SUBCLASS)
+#define PyBytes_CheckExact(op) Py_IS_TYPE(op, &PyBytes_Type)
+
+PyAPI_FUNC(PyObject *) PyBytes_FromStringAndSize(const char *, Py_ssize_t);
+PyAPI_FUNC(PyObject *) PyBytes_FromString(const char *);
+PyAPI_FUNC(PyObject *) PyBytes_FromObject(PyObject *);
+PyAPI_FUNC(PyObject *) PyBytes_FromFormatV(const char*, va_list)
+                                Py_GCC_ATTRIBUTE((format(printf, 1, 0)));
+PyAPI_FUNC(PyObject *) PyBytes_FromFormat(const char*, ...)
+                                Py_GCC_ATTRIBUTE((format(printf, 1, 2)));
+PyAPI_FUNC(Py_ssize_t) PyBytes_Size(PyObject *);
+PyAPI_FUNC(char *) PyBytes_AsString(PyObject *);
+PyAPI_FUNC(PyObject *) PyBytes_Repr(PyObject *, int);
+PyAPI_FUNC(void) PyBytes_Concat(PyObject **, PyObject *);
+PyAPI_FUNC(void) PyBytes_ConcatAndDel(PyObject **, PyObject *);
+PyAPI_FUNC(PyObject *) PyBytes_DecodeEscape(const char *, Py_ssize_t,
+                                            const char *, Py_ssize_t,
+                                            const char *);
+
+/* Provides access to the internal data buffer and size of a string
+   object or the default encoded version of a Unicode object. Passing
+   NULL as *len parameter will force the string buffer to be
+   0-terminated (passing a string with embedded NULL characters will
+   cause an exception).  */
+PyAPI_FUNC(int) PyBytes_AsStringAndSize(
+    PyObject *obj,      /* string or Unicode object */
+    char **s,           /* pointer to buffer variable */
+    Py_ssize_t *len     /* pointer to length variable or NULL
+                           (only possible for 0-terminated
+                           strings) */
+    );
+
+/* Flags used by string formatting */
+#define F_LJUST (1<<0)
+#define F_SIGN  (1<<1)
+#define F_BLANK (1<<2)
+#define F_ALT   (1<<3)
+#define F_ZERO  (1<<4)
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_BYTESOBJECT_H
+#  include  "cpython/bytesobject.h"
+#  undef Py_CPYTHON_BYTESOBJECT_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BYTESOBJECT_H */

Include/cellobject.h

+/* Cell object interface */
+#ifndef Py_LIMITED_API
+#ifndef Py_CELLOBJECT_H
+#define Py_CELLOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *ob_ref;       /* Content of the cell or NULL when empty */
+} PyCellObject;
+
+PyAPI_DATA(PyTypeObject) PyCell_Type;
+
+#define PyCell_Check(op) Py_IS_TYPE(op, &PyCell_Type)
+
+PyAPI_FUNC(PyObject *) PyCell_New(PyObject *);
+PyAPI_FUNC(PyObject *) PyCell_Get(PyObject *);
+PyAPI_FUNC(int) PyCell_Set(PyObject *, PyObject *);
+
+#define PyCell_GET(op) (((PyCellObject *)(op))->ob_ref)
+#define PyCell_SET(op, v) (((PyCellObject *)(op))->ob_ref = v)
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_TUPLEOBJECT_H */
+#endif /* Py_LIMITED_API */

Include/ceval.h

+#ifndef Py_CEVAL_H
+#define Py_CEVAL_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Interface to random parts in ceval.c */
+
+/* PyEval_CallObjectWithKeywords(), PyEval_CallObject(), PyEval_CallFunction
+ * and PyEval_CallMethod are deprecated. Since they are officially part of the
+ * stable ABI (PEP 384), they must be kept for backward compatibility.
+ * PyObject_Call(), PyObject_CallFunction() and PyObject_CallMethod() are
+ * recommended to call a callable object.
+ */
+
+Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
+    PyObject *callable,
+    PyObject *args,
+    PyObject *kwargs);
+
+/* Deprecated since PyEval_CallObjectWithKeywords is deprecated */
+#define PyEval_CallObject(callable, arg) \
+    PyEval_CallObjectWithKeywords(callable, arg, (PyObject *)NULL)
+
+Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallFunction(
+    PyObject *callable, const char *format, ...);
+Py_DEPRECATED(3.9) PyAPI_FUNC(PyObject *) PyEval_CallMethod(
+    PyObject *obj, const char *name, const char *format, ...);
+
+PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);
+PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);
+PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);
+PyAPI_FUNC(PyFrameObject *) PyEval_GetFrame(void);
+
+PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg);
+PyAPI_FUNC(int) Py_MakePendingCalls(void);
+
+/* Protection against deeply nested recursive calls
+
+   In Python 3.0, this protection has two levels:
+   * normal anti-recursion protection is triggered when the recursion level
+     exceeds the current recursion limit. It raises a RecursionError, and sets
+     the "overflowed" flag in the thread state structure. This flag
+     temporarily *disables* the normal protection; this allows cleanup code
+     to potentially outgrow the recursion limit while processing the
+     RecursionError.
+   * "last chance" anti-recursion protection is triggered when the recursion
+     level exceeds "current recursion limit + 50". By construction, this
+     protection can only be triggered when the "overflowed" flag is set. It
+     means the cleanup code has itself gone into an infinite loop, or the
+     RecursionError has been mistakingly ignored. When this protection is
+     triggered, the interpreter aborts with a Fatal Error.
+
+   In addition, the "overflowed" flag is automatically reset when the
+   recursion level drops below "current recursion limit - 50". This heuristic
+   is meant to ensure that the normal anti-recursion protection doesn't get
+   disabled too long.
+
+   Please note: this scheme has its own limitations. See:
+   http://mail.python.org/pipermail/python-dev/2008-August/082106.html
+   for some observations.
+*/
+PyAPI_FUNC(void) Py_SetRecursionLimit(int);
+PyAPI_FUNC(int) Py_GetRecursionLimit(void);
+
+PyAPI_FUNC(int) Py_EnterRecursiveCall(const char *where);
+PyAPI_FUNC(void) Py_LeaveRecursiveCall(void);
+
+#define Py_ALLOW_RECURSION \
+  do { unsigned char _old = PyThreadState_GET()->recursion_critical;\
+    PyThreadState_GET()->recursion_critical = 1;
+
+#define Py_END_ALLOW_RECURSION \
+    PyThreadState_GET()->recursion_critical = _old; \
+  } while(0);
+
+PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *);
+PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *);
+
+PyAPI_FUNC(PyObject *) PyEval_EvalFrame(PyFrameObject *);
+PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(PyFrameObject *f, int exc);
+
+/* Interface for threads.
+
+   A module that plans to do a blocking system call (or something else
+   that lasts a long time and doesn't touch Python data) can allow other
+   threads to run as follows:
+
+    ...preparations here...
+    Py_BEGIN_ALLOW_THREADS
+    ...blocking system call here...
+    Py_END_ALLOW_THREADS
+    ...interpret result here...
+
+   The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a
+   {}-surrounded block.
+   To leave the block in the middle (e.g., with return), you must insert
+   a line containing Py_BLOCK_THREADS before the return, e.g.
+
+    if (...premature_exit...) {
+        Py_BLOCK_THREADS
+        PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+
+   An alternative is:
+
+    Py_BLOCK_THREADS
+    if (...premature_exit...) {
+        PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+    Py_UNBLOCK_THREADS
+
+   For convenience, that the value of 'errno' is restored across
+   Py_END_ALLOW_THREADS and Py_BLOCK_THREADS.
+
+   WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND
+   Py_END_ALLOW_THREADS!!!
+
+   Note that not yet all candidates have been converted to use this
+   mechanism!
+*/
+
+PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);
+PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);
+
+Py_DEPRECATED(3.9) PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);
+Py_DEPRECATED(3.9) PyAPI_FUNC(void) PyEval_InitThreads(void);
+/* PyEval_AcquireLock() and PyEval_ReleaseLock() are part of stable ABI.
+ * They will be removed from this header file in the future version.
+ * But they will be remained in ABI until Python 4.0.
+ */
+Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_AcquireLock(void);
+Py_DEPRECATED(3.2) PyAPI_FUNC(void) PyEval_ReleaseLock(void);
+PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);
+PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);
+
+#define Py_BEGIN_ALLOW_THREADS { \
+                        PyThreadState *_save; \
+                        _save = PyEval_SaveThread();
+#define Py_BLOCK_THREADS        PyEval_RestoreThread(_save);
+#define Py_UNBLOCK_THREADS      _save = PyEval_SaveThread();
+#define Py_END_ALLOW_THREADS    PyEval_RestoreThread(_save); \
+                 }
+
+/* Masks and values used by FORMAT_VALUE opcode. */
+#define FVC_MASK      0x3
+#define FVC_NONE      0x0
+#define FVC_STR       0x1
+#define FVC_REPR      0x2
+#define FVC_ASCII     0x3
+#define FVS_MASK      0x4
+#define FVS_HAVE_SPEC 0x4
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_CEVAL_H
+#  include  "cpython/ceval.h"
+#  undef Py_CPYTHON_CEVAL_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CEVAL_H */

Include/classobject.h

+/* Former class object interface -- now only bound methods are here  */
+
+/* Revealing some structures (not for general use) */
+
+#ifndef Py_LIMITED_API
+#ifndef Py_CLASSOBJECT_H
+#define Py_CLASSOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *im_func;   /* The callable object implementing the method */
+    PyObject *im_self;   /* The instance it is bound to */
+    PyObject *im_weakreflist; /* List of weak references */
+    vectorcallfunc vectorcall;
+} PyMethodObject;
+
+PyAPI_DATA(PyTypeObject) PyMethod_Type;
+
+#define PyMethod_Check(op) Py_IS_TYPE(op, &PyMethod_Type)
+
+PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *);
+
+PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *);
+PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *);
+
+/* Macros for direct access to these values. Type checks are *not*
+   done, so use with care. */
+#define PyMethod_GET_FUNCTION(meth) \
+        (((PyMethodObject *)meth) -> im_func)
+#define PyMethod_GET_SELF(meth) \
+        (((PyMethodObject *)meth) -> im_self)
+
+typedef struct {
+    PyObject_HEAD
+    PyObject *func;
+} PyInstanceMethodObject;
+
+PyAPI_DATA(PyTypeObject) PyInstanceMethod_Type;
+
+#define PyInstanceMethod_Check(op) Py_IS_TYPE(op, &PyInstanceMethod_Type)
+
+PyAPI_FUNC(PyObject *) PyInstanceMethod_New(PyObject *);
+PyAPI_FUNC(PyObject *) PyInstanceMethod_Function(PyObject *);
+
+/* Macros for direct access to these values. Type checks are *not*
+   done, so use with care. */
+#define PyInstanceMethod_GET_FUNCTION(meth) \
+        (((PyInstanceMethodObject *)meth) -> func)
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CLASSOBJECT_H */
+#endif /* Py_LIMITED_API */

Include/code.h

+/* Definitions for bytecode */
+
+#ifndef Py_CODE_H
+#define Py_CODE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct PyCodeObject PyCodeObject;
+
+#ifndef Py_LIMITED_API
+#  define Py_CPYTHON_CODE_H
+#  include  "cpython/code.h"
+#  undef Py_CPYTHON_CODE_H
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CODE_H */

Include/codecs.h

+#ifndef Py_CODECREGISTRY_H
+#define Py_CODECREGISTRY_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ------------------------------------------------------------------------
+
+   Python Codec Registry and support functions
+
+
+Written by Marc-Andre Lemburg (mal@lemburg.com).
+
+Copyright (c) Corporation for National Research Initiatives.
+
+   ------------------------------------------------------------------------ */
+
+/* Register a new codec search function.
+
+   As side effect, this tries to load the encodings package, if not
+   yet done, to make sure that it is always first in the list of
+   search functions.
+
+   The search_function's refcount is incremented by this function. */
+
+PyAPI_FUNC(int) PyCodec_Register(
+       PyObject *search_function
+       );
+
+/* Codec registry lookup API.
+
+   Looks up the given encoding and returns a CodecInfo object with
+   function attributes which implement the different aspects of
+   processing the encoding.
+
+   The encoding string is looked up converted to all lower-case
+   characters. This makes encodings looked up through this mechanism
+   effectively case-insensitive.
+
+   If no codec is found, a KeyError is set and NULL returned.
+
+   As side effect, this tries to load the encodings package, if not
+   yet done. This is part of the lazy load strategy for the encodings
+   package.
+
+ */
+
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(PyObject *) _PyCodec_Lookup(
+       const char *encoding
+       );
+
+PyAPI_FUNC(int) _PyCodec_Forget(
+       const char *encoding
+       );
+#endif
+
+/* Codec registry encoding check API.
+
+   Returns 1/0 depending on whether there is a registered codec for
+   the given encoding.
+
+*/
+
+PyAPI_FUNC(int) PyCodec_KnownEncoding(
+       const char *encoding
+       );
+
+/* Generic codec based encoding API.
+
+   object is passed through the encoder function found for the given
+   encoding using the error handling method defined by errors. errors
+   may be NULL to use the default method defined for the codec.
+
+   Raises a LookupError in case no encoder can be found.
+
+ */
+
+PyAPI_FUNC(PyObject *) PyCodec_Encode(
+       PyObject *object,
+       const char *encoding,
+       const char *errors
+       );
+
+/* Generic codec based decoding API.
+
+   object is passed through the decoder function found for the given
+   encoding using the error handling method defined by errors. errors
+   may be NULL to use the default method defined for the codec.
+
+   Raises a LookupError in case no encoder can be found.
+
+ */
+
+PyAPI_FUNC(PyObject *) PyCodec_Decode(
+       PyObject *object,
+       const char *encoding,
+       const char *errors
+       );
+
+#ifndef Py_LIMITED_API
+/* Text codec specific encoding and decoding API.
+
+   Checks the encoding against a list of codecs which do not
+   implement a str<->bytes encoding before attempting the
+   operation.
+
+   Please note that these APIs are internal and should not
+   be used in Python C extensions.
+
+   XXX (ncoghlan): should we make these, or something like them, public
+   in Python 3.5+?
+
+ */
+PyAPI_FUNC(PyObject *) _PyCodec_LookupTextEncoding(
+       const char *encoding,
+       const char *alternate_command
+       );
+
+PyAPI_FUNC(PyObject *) _PyCodec_EncodeText(
+       PyObject *object,
+       const char *encoding,
+       const char *errors
+       );
+
+PyAPI_FUNC(PyObject *) _PyCodec_DecodeText(
+       PyObject *object,
+       const char *encoding,
+       const char *errors
+       );
+
+/* These two aren't actually text encoding specific, but _io.TextIOWrapper
+ * is the only current API consumer.
+ */
+PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalDecoder(
+       PyObject *codec_info,
+       const char *errors
+       );
+
+PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalEncoder(
+       PyObject *codec_info,
+       const char *errors
+       );
+#endif
+
+
+
+/* --- Codec Lookup APIs --------------------------------------------------
+
+   All APIs return a codec object with incremented refcount and are
+   based on _PyCodec_Lookup().  The same comments w/r to the encoding
+   name also apply to these APIs.
+
+*/
+
+/* Get an encoder function for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_Encoder(
+       const char *encoding
+       );
+
+/* Get a decoder function for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_Decoder(
+       const char *encoding
+       );
+
+/* Get an IncrementalEncoder object for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_IncrementalEncoder(
+       const char *encoding,
+       const char *errors
+       );
+
+/* Get an IncrementalDecoder object function for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_IncrementalDecoder(
+       const char *encoding,
+       const char *errors
+       );
+
+/* Get a StreamReader factory function for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_StreamReader(
+       const char *encoding,
+       PyObject *stream,
+       const char *errors
+       );
+
+/* Get a StreamWriter factory function for the given encoding. */
+
+PyAPI_FUNC(PyObject *) PyCodec_StreamWriter(
+       const char *encoding,
+       PyObject *stream,
+       const char *errors
+       );
+
+/* Unicode encoding error handling callback registry API */
+
+/* Register the error handling callback function error under the given
+   name. This function will be called by the codec when it encounters
+   unencodable characters/undecodable bytes and doesn't know the
+   callback name, when name is specified as the error parameter
+   in the call to the encode/decode function.
+   Return 0 on success, -1 on error */
+PyAPI_FUNC(int) PyCodec_RegisterError(const char *name, PyObject *error);
+
+/* Lookup the error handling callback function registered under the given
+   name. As a special case NULL can be passed, in which case
+   the error handling callback for "strict" will be returned. */
+PyAPI_FUNC(PyObject *) PyCodec_LookupError(const char *name);
+
+/* raise exc as an exception */
+PyAPI_FUNC(PyObject *) PyCodec_StrictErrors(PyObject *exc);
+
+/* ignore the unicode error, skipping the faulty input */
+PyAPI_FUNC(PyObject *) PyCodec_IgnoreErrors(PyObject *exc);
+
+/* replace the unicode encode error with ? or U+FFFD */
+PyAPI_FUNC(PyObject *) PyCodec_ReplaceErrors(PyObject *exc);
+
+/* replace the unicode encode error with XML character references */
+PyAPI_FUNC(PyObject *) PyCodec_XMLCharRefReplaceErrors(PyObject *exc);
+
+/* replace the unicode encode error with backslash escapes (\x, \u and \U) */
+PyAPI_FUNC(PyObject *) PyCodec_BackslashReplaceErrors(PyObject *exc);
+
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03050000
+/* replace the unicode encode error with backslash escapes (\N, \x, \u and \U) */
+PyAPI_FUNC(PyObject *) PyCodec_NameReplaceErrors(PyObject *exc);
+#endif
+
+#ifndef Py_LIMITED_API
+PyAPI_DATA(const char *) Py_hexdigits;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CODECREGISTRY_H */

Include/compile.h

+#ifndef Py_COMPILE_H
+#define Py_COMPILE_H
+
+#ifndef Py_LIMITED_API
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Public interface */
+struct _node; /* Declare the existence of this type */
+#ifndef Py_BUILD_CORE
+Py_DEPRECATED(3.9)
+#endif
+PyAPI_FUNC(PyCodeObject *) PyNode_Compile(struct _node *, const char *);
+/* XXX (ncoghlan): Unprefixed type name in a public API! */
+
+#define PyCF_MASK (CO_FUTURE_DIVISION | CO_FUTURE_ABSOLUTE_IMPORT | \
+                   CO_FUTURE_WITH_STATEMENT | CO_FUTURE_PRINT_FUNCTION | \
+                   CO_FUTURE_UNICODE_LITERALS | CO_FUTURE_BARRY_AS_BDFL | \
+                   CO_FUTURE_GENERATOR_STOP | CO_FUTURE_ANNOTATIONS)
+#define PyCF_MASK_OBSOLETE (CO_NESTED)
+
+/* bpo-39562: CO_FUTURE_ and PyCF_ constants must be kept unique.
+   PyCF_ constants can use bits from 0x0100 to 0x10000.
+   CO_FUTURE_ constants use bits starting at 0x20000. */
+#define PyCF_SOURCE_IS_UTF8  0x0100
+#define PyCF_DONT_IMPLY_DEDENT 0x0200
+#define PyCF_ONLY_AST 0x0400
+#define PyCF_IGNORE_COOKIE 0x0800
+#define PyCF_TYPE_COMMENTS 0x1000
+#define PyCF_ALLOW_TOP_LEVEL_AWAIT 0x2000
+#define PyCF_COMPILE_MASK (PyCF_ONLY_AST | PyCF_ALLOW_TOP_LEVEL_AWAIT | \
+                           PyCF_TYPE_COMMENTS | PyCF_DONT_IMPLY_DEDENT)
+
+#ifndef Py_LIMITED_API
+typedef struct {
+    int cf_flags;  /* bitmask of CO_xxx flags relevant to future */
+    int cf_feature_version;  /* minor Python version (PyCF_ONLY_AST) */
+} PyCompilerFlags;
+
+#define _PyCompilerFlags_INIT \
+    (PyCompilerFlags){.cf_flags = 0, .cf_feature_version = PY_MINOR_VERSION}
+#endif
+
+/* Future feature support */
+
+typedef struct {
+    int ff_features;      /* flags set by future statements */
+    int ff_lineno;        /* line number of last future statement */
+} PyFutureFeatures;
+
+#define FUTURE_NESTED_SCOPES "nested_scopes"
+#define FUTURE_GENERATORS "generators"
+#define FUTURE_DIVISION "division"
+#define FUTURE_ABSOLUTE_IMPORT "absolute_import"
+#define FUTURE_WITH_STATEMENT "with_statement"
+#define FUTURE_PRINT_FUNCTION "print_function"
+#define FUTURE_UNICODE_LITERALS "unicode_literals"
+#define FUTURE_BARRY_AS_BDFL "barry_as_FLUFL"
+#define FUTURE_GENERATOR_STOP "generator_stop"
+#define FUTURE_ANNOTATIONS "annotations"
+
+struct _mod; /* Declare the existence of this type */
+#define PyAST_Compile(mod, s, f, ar) PyAST_CompileEx(mod, s, f, -1, ar)
+PyAPI_FUNC(PyCodeObject *) PyAST_CompileEx(
+    struct _mod *mod,
+    const char *filename,       /* decoded from the filesystem encoding */
+    PyCompilerFlags *flags,
+    int optimize,
+    PyArena *arena);
+PyAPI_FUNC(PyCodeObject *) PyAST_CompileObject(
+    struct _mod *mod,
+    PyObject *filename,
+    PyCompilerFlags *flags,
+    int optimize,
+    PyArena *arena);
+PyAPI_FUNC(PyFutureFeatures *) PyFuture_FromAST(
+    struct _mod * mod,
+    const char *filename        /* decoded from the filesystem encoding */
+    );
+PyAPI_FUNC(PyFutureFeatures *) PyFuture_FromASTObject(
+    struct _mod * mod,
+    PyObject *filename
+    );
+
+/* _Py_Mangle is defined in compile.c */
+PyAPI_FUNC(PyObject*) _Py_Mangle(PyObject *p, PyObject *name);
+
+#define PY_INVALID_STACK_EFFECT INT_MAX
+PyAPI_FUNC(int) PyCompile_OpcodeStackEffect(int opcode, int oparg);
+PyAPI_FUNC(int) PyCompile_OpcodeStackEffectWithJump(int opcode, int oparg, int jump);
+
+typedef struct {
+    int optimize;
+    int ff_features;
+} _PyASTOptimizeState;
+
+PyAPI_FUNC(int) _PyAST_Optimize(struct _mod *, PyArena *arena, _PyASTOptimizeState *state);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !Py_LIMITED_API */
+
+/* These definitions must match corresponding definitions in graminit.h. */
+#define Py_single_input 256
+#define Py_file_input 257
+#define Py_eval_input 258
+#define Py_func_type_input 345
+
+/* This doesn't need to match anything */
+#define Py_fstring_input 800
+
+#endif /* !Py_COMPILE_H */

Include/complexobject.h

+/* Complex number structure */
+
+#ifndef Py_COMPLEXOBJECT_H
+#define Py_COMPLEXOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+typedef struct {
+    double real;
+    double imag;
+} Py_complex;
+
+/* Operations on complex numbers from complexmodule.c */
+
+PyAPI_FUNC(Py_complex) _Py_c_sum(Py_complex, Py_complex);
+PyAPI_FUNC(Py_complex) _Py_c_diff(Py_complex, Py_complex);
+PyAPI_FUNC(Py_complex) _Py_c_neg(Py_complex);
+PyAPI_FUNC(Py_complex) _Py_c_prod(Py_complex, Py_complex);
+PyAPI_FUNC(Py_complex) _Py_c_quot(Py_complex, Py_complex);
+PyAPI_FUNC(Py_complex) _Py_c_pow(Py_complex, Py_complex);
+PyAPI_FUNC(double) _Py_c_abs(Py_complex);
+#endif
+
+/* Complex object interface */
+
+/*
+PyComplexObject represents a complex number with double-precision
+real and imaginary parts.
+*/
+#ifndef Py_LIMITED_API
+typedef struct {
+    PyObject_HEAD
+    Py_complex cval;
+} PyComplexObject;
+#endif
+
+PyAPI_DATA(PyTypeObject) PyComplex_Type;
+
+#define PyComplex_Check(op) PyObject_TypeCheck(op, &PyComplex_Type)
+#define PyComplex_CheckExact(op) Py_IS_TYPE(op, &PyComplex_Type)
+
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(PyObject *) PyComplex_FromCComplex(Py_complex);
+#endif
+PyAPI_FUNC(PyObject *) PyComplex_FromDoubles(double real, double imag);
+
+PyAPI_FUNC(double) PyComplex_RealAsDouble(PyObject *op);
+PyAPI_FUNC(double) PyComplex_ImagAsDouble(PyObject *op);
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(Py_complex) PyComplex_AsCComplex(PyObject *op);
+#endif
+
+/* Format the object based on the format_spec, as defined in PEP 3101
+   (Advanced String Formatting). */
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(int) _PyComplex_FormatAdvancedWriter(
+    _PyUnicodeWriter *writer,
+    PyObject *obj,
+    PyObject *format_spec,
+    Py_ssize_t start,
+    Py_ssize_t end);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_COMPLEXOBJECT_H */

Include/context.h

+#ifndef Py_CONTEXT_H
+#define Py_CONTEXT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_LIMITED_API
+
+
+PyAPI_DATA(PyTypeObject) PyContext_Type;
+typedef struct _pycontextobject PyContext;
+
+PyAPI_DATA(PyTypeObject) PyContextVar_Type;
+typedef struct _pycontextvarobject PyContextVar;
+
+PyAPI_DATA(PyTypeObject) PyContextToken_Type;
+typedef struct _pycontexttokenobject PyContextToken;
+
+
+#define PyContext_CheckExact(o) Py_IS_TYPE(o, &PyContext_Type)
+#define PyContextVar_CheckExact(o) Py_IS_TYPE(o, &PyContextVar_Type)
+#define PyContextToken_CheckExact(o) Py_IS_TYPE(o, &PyContextToken_Type)
+
+
+PyAPI_FUNC(PyObject *) PyContext_New(void);
+PyAPI_FUNC(PyObject *) PyContext_Copy(PyObject *);
+PyAPI_FUNC(PyObject *) PyContext_CopyCurrent(void);
+
+PyAPI_FUNC(int) PyContext_Enter(PyObject *);
+PyAPI_FUNC(int) PyContext_Exit(PyObject *);
+
+
+/* Create a new context variable.
+
+   default_value can be NULL.
+*/
+PyAPI_FUNC(PyObject *) PyContextVar_New(
+    const char *name, PyObject *default_value);
+
+
+/* Get a value for the variable.
+
+   Returns -1 if an error occurred during lookup.
+
+   Returns 0 if value either was or was not found.
+
+   If value was found, *value will point to it.
+   If not, it will point to:
+
+   - default_value, if not NULL;
+   - the default value of "var", if not NULL;
+   - NULL.
+
+   '*value' will be a new ref, if not NULL.
+*/
+PyAPI_FUNC(int) PyContextVar_Get(
+    PyObject *var, PyObject *default_value, PyObject **value);
+
+
+/* Set a new value for the variable.
+   Returns NULL if an error occurs.
+*/
+PyAPI_FUNC(PyObject *) PyContextVar_Set(PyObject *var, PyObject *value);
+
+
+/* Reset a variable to its previous value.
+   Returns 0 on success, -1 on error.
+*/
+PyAPI_FUNC(int) PyContextVar_Reset(PyObject *var, PyObject *token);
+
+
+/* This method is exposed only for CPython tests. Don not use it. */
+PyAPI_FUNC(PyObject *) _PyContext_NewHamtForTests(void);
+
+
+#endif /* !Py_LIMITED_API */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_CONTEXT_H */

Include/cpython/abstract.h

+#ifndef Py_CPYTHON_ABSTRACTOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* === Object Protocol ================================================== */
+
+#ifdef PY_SSIZE_T_CLEAN
+#  define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT
+#endif
+
+/* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple)
+   format to a Python dictionary ("kwargs" dict).
+
+   The type of kwnames keys is not checked. The final function getting
+   arguments is responsible to check if all keys are strings, for example using
+   PyArg_ParseTupleAndKeywords() or PyArg_ValidateKeywordArguments().
+
+   Duplicate keys are merged using the last value. If duplicate keys must raise
+   an exception, the caller is responsible to implement an explicit keys on
+   kwnames. */
+PyAPI_FUNC(PyObject *) _PyStack_AsDict(
+    PyObject *const *values,
+    PyObject *kwnames);
+
+/* Suggested size (number of positional arguments) for arrays of PyObject*
+   allocated on a C stack to avoid allocating memory on the heap memory. Such
+   array is used to pass positional arguments to call functions of the
+   PyObject_Vectorcall() family.
+
+   The size is chosen to not abuse the C stack and so limit the risk of stack
+   overflow. The size is also chosen to allow using the small stack for most
+   function calls of the Python standard library. On 64-bit CPU, it allocates
+   40 bytes on the stack. */
+#define _PY_FASTCALL_SMALL_STACK 5
+
+PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *result,
+    const char *where);
+
+/* === Vectorcall protocol (PEP 590) ============================= */
+
+/* Call callable using tp_call. Arguments are like PyObject_Vectorcall()
+   or PyObject_FastCallDict() (both forms are supported),
+   except that nargs is plainly the number of arguments without flags. */
+PyAPI_FUNC(PyObject *) _PyObject_MakeTpCall(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *const *args, Py_ssize_t nargs,
+    PyObject *keywords);
+
+#define PY_VECTORCALL_ARGUMENTS_OFFSET ((size_t)1 << (8 * sizeof(size_t) - 1))
+
+static inline Py_ssize_t
+PyVectorcall_NARGS(size_t n)
+{
+    return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
+}
+
+static inline vectorcallfunc
+PyVectorcall_Function(PyObject *callable)
+{
+    PyTypeObject *tp;
+    Py_ssize_t offset;
+    vectorcallfunc ptr;
+
+    assert(callable != NULL);
+    tp = Py_TYPE(callable);
+    if (!PyType_HasFeature(tp, Py_TPFLAGS_HAVE_VECTORCALL)) {
+        return NULL;
+    }
+    assert(PyCallable_Check(callable));
+    offset = tp->tp_vectorcall_offset;
+    assert(offset > 0);
+    memcpy(&ptr, (char *) callable + offset, sizeof(ptr));
+    return ptr;
+}
+
+/* Call the callable object 'callable' with the "vectorcall" calling
+   convention.
+
+   args is a C array for positional arguments.
+
+   nargsf is the number of positional arguments plus optionally the flag
+   PY_VECTORCALL_ARGUMENTS_OFFSET which means that the caller is allowed to
+   modify args[-1].
+
+   kwnames is a tuple of keyword names. The values of the keyword arguments
+   are stored in "args" after the positional arguments (note that the number
+   of keyword arguments does not change nargsf). kwnames can also be NULL if
+   there are no keyword arguments.
+
+   keywords must only contain strings and all keys must be unique.
+
+   Return the result on success. Raise an exception and return NULL on
+   error. */
+static inline PyObject *
+_PyObject_VectorcallTstate(PyThreadState *tstate, PyObject *callable,
+                           PyObject *const *args, size_t nargsf,
+                           PyObject *kwnames)
+{
+    vectorcallfunc func;
+    PyObject *res;
+
+    assert(kwnames == NULL || PyTuple_Check(kwnames));
+    assert(args != NULL || PyVectorcall_NARGS(nargsf) == 0);
+
+    func = PyVectorcall_Function(callable);
+    if (func == NULL) {
+        Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+        return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames);
+    }
+    res = func(callable, args, nargsf, kwnames);
+    return _Py_CheckFunctionResult(tstate, callable, res, NULL);
+}
+
+static inline PyObject *
+PyObject_Vectorcall(PyObject *callable, PyObject *const *args,
+                     size_t nargsf, PyObject *kwnames)
+{
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_VectorcallTstate(tstate, callable,
+                                      args, nargsf, kwnames);
+}
+
+// Backwards compatibility aliases for API that was provisional in Python 3.8
+#define _PyObject_Vectorcall PyObject_Vectorcall
+#define _PyObject_VectorcallMethod PyObject_VectorcallMethod
+#define _PyObject_FastCallDict PyObject_VectorcallDict
+#define _PyVectorcall_Function PyVectorcall_Function
+#define _PyObject_CallOneArg PyObject_CallOneArg
+#define _PyObject_CallMethodNoArgs PyObject_CallMethodNoArgs
+#define _PyObject_CallMethodOneArg PyObject_CallMethodOneArg
+
+/* Same as PyObject_Vectorcall except that keyword arguments are passed as
+   dict, which may be NULL if there are no keyword arguments. */
+PyAPI_FUNC(PyObject *) PyObject_VectorcallDict(
+    PyObject *callable,
+    PyObject *const *args,
+    size_t nargsf,
+    PyObject *kwargs);
+
+/* Call "callable" (which must support vectorcall) with positional arguments
+   "tuple" and keyword arguments "dict". "dict" may also be NULL */
+PyAPI_FUNC(PyObject *) PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *dict);
+
+static inline PyObject *
+_PyObject_FastCallTstate(PyThreadState *tstate, PyObject *func, PyObject *const *args, Py_ssize_t nargs)
+{
+    return _PyObject_VectorcallTstate(tstate, func, args, (size_t)nargs, NULL);
+}
+
+/* Same as PyObject_Vectorcall except without keyword arguments */
+static inline PyObject *
+_PyObject_FastCall(PyObject *func, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_FastCallTstate(tstate, func, args, nargs);
+}
+
+/* Call a callable without any arguments
+   Private static inline function variant of public function
+   PyObject_CallNoArgs(). */
+static inline PyObject *
+_PyObject_CallNoArg(PyObject *func) {
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_VectorcallTstate(tstate, func, NULL, 0, NULL);
+}
+
+static inline PyObject *
+PyObject_CallOneArg(PyObject *func, PyObject *arg)
+{
+    PyObject *_args[2];
+    PyObject **args;
+    PyThreadState *tstate;
+    size_t nargsf;
+
+    assert(arg != NULL);
+    args = _args + 1;  // For PY_VECTORCALL_ARGUMENTS_OFFSET
+    args[0] = arg;
+    tstate = PyThreadState_GET();
+    nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    return _PyObject_VectorcallTstate(tstate, func, args, nargsf, NULL);
+}
+
+PyAPI_FUNC(PyObject *) PyObject_VectorcallMethod(
+    PyObject *name, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames);
+
+static inline PyObject *
+PyObject_CallMethodNoArgs(PyObject *self, PyObject *name)
+{
+    return PyObject_VectorcallMethod(name, &self,
+           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+static inline PyObject *
+PyObject_CallMethodOneArg(PyObject *self, PyObject *name, PyObject *arg)
+{
+    PyObject *args[2] = {self, arg};
+
+    assert(arg != NULL);
+    return PyObject_VectorcallMethod(name, args,
+           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+/* Like PyObject_CallMethod(), but expect a _Py_Identifier*
+   as the method name. */
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodId(PyObject *obj,
+                                              _Py_Identifier *name,
+                                              const char *format, ...);
+
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *obj,
+                                                    _Py_Identifier *name,
+                                                    const char *format,
+                                                    ...);
+
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs(
+    PyObject *obj,
+    struct _Py_Identifier *name,
+    ...);
+
+static inline PyObject *
+_PyObject_VectorcallMethodId(
+    _Py_Identifier *name, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames)
+{
+    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */
+    if (!oname) {
+        return NULL;
+    }
+    return PyObject_VectorcallMethod(oname, args, nargsf, kwnames);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdNoArgs(PyObject *self, _Py_Identifier *name)
+{
+    return _PyObject_VectorcallMethodId(name, &self,
+           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdOneArg(PyObject *self, _Py_Identifier *name, PyObject *arg)
+{
+    PyObject *args[2] = {self, arg};
+
+    assert(arg != NULL);
+    return _PyObject_VectorcallMethodId(name, args,
+           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o);
+
+/* Guess the size of object 'o' using len(o) or o.__length_hint__().
+   If neither of those return a non-negative value, then return the default
+   value.  If one of the calls fails, this function returns -1. */
+PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
+
+/* === New Buffer API ============================================ */
+
+/* Return 1 if the getbuffer function is available, otherwise return 0. */
+PyAPI_FUNC(int) PyObject_CheckBuffer(PyObject *obj);
+
+/* This is a C-API version of the getbuffer function call.  It checks
+   to make sure object has the required function pointer and issues the
+   call.
+
+   Returns -1 and raises an error on failure and returns 0 on success. */
+PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
+                                   int flags);
+
+/* Get the memory area pointed to by the indices for the buffer given.
+   Note that view->ndim is the assumed size of indices. */
+PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices);
+
+/* Return the implied itemsize of the data-format area from a
+   struct-style description. */
+PyAPI_FUNC(Py_ssize_t) PyBuffer_SizeFromFormat(const char *format);
+
+/* Implementation in memoryobject.c */
+PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view,
+                                      Py_ssize_t len, char order);
+
+PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf,
+                                        Py_ssize_t len, char order);
+
+/* Copy len bytes of data from the contiguous chunk of memory
+   pointed to by buf into the buffer exported by obj.  Return
+   0 on success and return -1 and raise a PyBuffer_Error on
+   error (i.e. the object does not have a buffer interface or
+   it is not working).
+
+   If fort is 'F', then if the object is multi-dimensional,
+   then the data will be copied into the array in
+   Fortran-style (first dimension varies the fastest).  If
+   fort is 'C', then the data will be copied into the array
+   in C-style (last dimension varies the fastest).  If fort
+   is 'A', then it does not matter and the copy will be made
+   in whatever way is more efficient. */
+PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
+
+/* Copy the data from the src buffer to the buffer of destination. */
+PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort);
+
+/*Fill the strides array with byte-strides of a contiguous
+  (Fortran-style if fort is 'F' or C-style otherwise)
+  array of the given shape with the given number of bytes
+  per element. */
+PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
+                                               Py_ssize_t *shape,
+                                               Py_ssize_t *strides,
+                                               int itemsize,
+                                               char fort);
+
+/* Fills in a buffer-info structure correctly for an exporter
+   that can only share a contiguous chunk of memory of
+   "unsigned bytes" of the given length.
+
+   Returns 0 on success and -1 (with raising an error) on error. */
+PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
+                                  Py_ssize_t len, int readonly,
+                                  int flags);
+
+/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */
+PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
+
+/* ==== Iterators ================================================ */
+
+#define PyIter_Check(obj) \
+    (Py_TYPE(obj)->tp_iternext != NULL && \
+     Py_TYPE(obj)->tp_iternext != &_PyObject_NextNotImplemented)
+
+/* === Sequence protocol ================================================ */
+
+/* Assume tp_as_sequence and sq_item exist and that 'i' does not
+   need to be corrected for a negative index. */
+#define PySequence_ITEM(o, i)\
+    ( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) )
+
+#define PY_ITERSEARCH_COUNT    1
+#define PY_ITERSEARCH_INDEX    2
+#define PY_ITERSEARCH_CONTAINS 3
+
+/* Iterate over seq.
+
+   Result depends on the operation:
+
+   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
+     error.
+   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
+     obj in seq; set ValueError and return -1 if none found;
+     also return -1 on error.
+   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
+     error. */
+PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq,
+                                              PyObject *obj, int operation);
+
+/* === Mapping protocol ================================================= */
+
+PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
+
+PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
+
+PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self);
+
+PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]);
+
+/* For internal use by buffer API functions */
+PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+
+/* Convert Python int to Py_ssize_t. Do nothing if the argument is None. */
+PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
+
+#ifdef __cplusplus
+}
+#endif

Include/cpython/bytearrayobject.h

+#ifndef Py_CPYTHON_BYTEARRAYOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+/* Object layout */
+typedef struct {
+    PyObject_VAR_HEAD
+    Py_ssize_t ob_alloc;   /* How many bytes allocated in ob_bytes */
+    char *ob_bytes;        /* Physical backing buffer */
+    char *ob_start;        /* Logical start inside ob_bytes */
+    Py_ssize_t ob_exports; /* How many buffer exports */
+} PyByteArrayObject;
+
+/* Macros, trading safety for speed */
+#define PyByteArray_AS_STRING(self) \
+    (assert(PyByteArray_Check(self)), \
+     Py_SIZE(self) ? ((PyByteArrayObject *)(self))->ob_start : _PyByteArray_empty_string)
+#define PyByteArray_GET_SIZE(self) (assert(PyByteArray_Check(self)), Py_SIZE(self))
+
+PyAPI_DATA(char) _PyByteArray_empty_string[];

Include/cpython/bytesobject.h

+#ifndef Py_CPYTHON_BYTESOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+typedef struct {
+    PyObject_VAR_HEAD
+    Py_hash_t ob_shash;
+    char ob_sval[1];
+
+    /* Invariants:
+     *     ob_sval contains space for 'ob_size+1' elements.
+     *     ob_sval[ob_size] == 0.
+     *     ob_shash is the hash of the string or -1 if not computed yet.
+     */
+} PyBytesObject;
+
+PyAPI_FUNC(int) _PyBytes_Resize(PyObject **, Py_ssize_t);
+PyAPI_FUNC(PyObject*) _PyBytes_FormatEx(
+    const char *format,
+    Py_ssize_t format_len,
+    PyObject *args,
+    int use_bytearray);
+PyAPI_FUNC(PyObject*) _PyBytes_FromHex(
+    PyObject *string,
+    int use_bytearray);
+
+/* Helper for PyBytes_DecodeEscape that detects invalid escape chars. */
+PyAPI_FUNC(PyObject *) _PyBytes_DecodeEscape(const char *, Py_ssize_t,
+                                             const char *, const char **);
+
+/* Macro, trading safety for speed */
+#define PyBytes_AS_STRING(op) (assert(PyBytes_Check(op)), \
+                                (((PyBytesObject *)(op))->ob_sval))
+#define PyBytes_GET_SIZE(op)  (assert(PyBytes_Check(op)),Py_SIZE(op))
+
+/* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
+   x must be an iterable object. */
+PyAPI_FUNC(PyObject *) _PyBytes_Join(PyObject *sep, PyObject *x);
+
+
+/* The _PyBytesWriter structure is big: it contains an embedded "stack buffer".
+   A _PyBytesWriter variable must be declared at the end of variables in a
+   function to optimize the memory allocation on the stack. */
+typedef struct {
+    /* bytes, bytearray or NULL (when the small buffer is used) */
+    PyObject *buffer;
+
+    /* Number of allocated size. */
+    Py_ssize_t allocated;
+
+    /* Minimum number of allocated bytes,
+       incremented by _PyBytesWriter_Prepare() */
+    Py_ssize_t min_size;
+
+    /* If non-zero, use a bytearray instead of a bytes object for buffer. */
+    int use_bytearray;
+
+    /* If non-zero, overallocate the buffer (default: 0).
+       This flag must be zero if use_bytearray is non-zero. */
+    int overallocate;
+
+    /* Stack buffer */
+    int use_small_buffer;
+    char small_buffer[512];
+} _PyBytesWriter;
+
+/* Initialize a bytes writer
+
+   By default, the overallocation is disabled. Set the overallocate attribute
+   to control the allocation of the buffer. */
+PyAPI_FUNC(void) _PyBytesWriter_Init(_PyBytesWriter *writer);
+
+/* Get the buffer content and reset the writer.
+   Return a bytes object, or a bytearray object if use_bytearray is non-zero.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(PyObject *) _PyBytesWriter_Finish(_PyBytesWriter *writer,
+    void *str);
+
+/* Deallocate memory of a writer (clear its internal buffer). */
+PyAPI_FUNC(void) _PyBytesWriter_Dealloc(_PyBytesWriter *writer);
+
+/* Allocate the buffer to write size bytes.
+   Return the pointer to the beginning of buffer data.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Alloc(_PyBytesWriter *writer,
+    Py_ssize_t size);
+
+/* Ensure that the buffer is large enough to write *size* bytes.
+   Add size to the writer minimum size (min_size attribute).
+
+   str is the current pointer inside the buffer.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_Prepare(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Resize the buffer to make it larger.
+   The new buffer may be larger than size bytes because of overallocation.
+   Return the updated current pointer inside the buffer.
+   Raise an exception and return NULL on error.
+
+   Note: size must be greater than the number of allocated bytes in the writer.
+
+   This function doesn't use the writer minimum size (min_size attribute).
+
+   See also _PyBytesWriter_Prepare().
+   */
+PyAPI_FUNC(void*) _PyBytesWriter_Resize(_PyBytesWriter *writer,
+    void *str,
+    Py_ssize_t size);
+
+/* Write bytes.
+   Raise an exception and return NULL on error. */
+PyAPI_FUNC(void*) _PyBytesWriter_WriteBytes(_PyBytesWriter *writer,
+    void *str,
+    const void *bytes,
+    Py_ssize_t size);

Include/cpython/ceval.h

+#ifndef Py_CPYTHON_CEVAL_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *);
+PyAPI_DATA(int) _PyEval_SetProfile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
+PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *);
+PyAPI_FUNC(int) _PyEval_SetTrace(PyThreadState *tstate, Py_tracefunc func, PyObject *arg);
+PyAPI_FUNC(int) _PyEval_GetCoroutineOriginTrackingDepth(void);
+PyAPI_FUNC(int) _PyEval_SetAsyncGenFirstiter(PyObject *);
+PyAPI_FUNC(PyObject *) _PyEval_GetAsyncGenFirstiter(void);
+PyAPI_FUNC(int) _PyEval_SetAsyncGenFinalizer(PyObject *);
+PyAPI_FUNC(PyObject *) _PyEval_GetAsyncGenFinalizer(void);
+
+/* Helper to look up a builtin object */
+PyAPI_FUNC(PyObject *) _PyEval_GetBuiltinId(_Py_Identifier *);
+/* Look at the current frame's (if any) code's co_flags, and turn on
+   the corresponding compiler flags in cf->cf_flags.  Return 1 if any
+   flag was set, else return 0. */
+PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf);
+
+PyAPI_FUNC(PyObject *) _PyEval_EvalFrameDefault(PyThreadState *tstate, PyFrameObject *f, int exc);
+
+PyAPI_FUNC(void) _PyEval_SetSwitchInterval(unsigned long microseconds);
+PyAPI_FUNC(unsigned long) _PyEval_GetSwitchInterval(void);
+
+PyAPI_FUNC(Py_ssize_t) _PyEval_RequestCodeExtraIndex(freefunc);
+
+PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);
+PyAPI_FUNC(int) _PyEval_SliceIndexNotNone(PyObject *, Py_ssize_t *);
+
+#ifdef __cplusplus
+}
+#endif

Include/cpython/dictobject.h

+#ifndef Py_CPYTHON_DICTOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _dictkeysobject PyDictKeysObject;
+
+/* The ma_values pointer is NULL for a combined table
+ * or points to an array of PyObject* for a split table
+ */
+typedef struct {
+    PyObject_HEAD
+
+    /* Number of items in the dictionary */
+    Py_ssize_t ma_used;
+
+    /* Dictionary version: globally unique, value change each time
+       the dictionary is modified */
+    uint64_t ma_version_tag;
+
+    PyDictKeysObject *ma_keys;
+
+    /* If ma_values is NULL, the table is "combined": keys and values
+       are stored in ma_keys.
+
+       If ma_values is not NULL, the table is split:
+       keys are stored in ma_keys and values are stored in ma_values */
+    PyObject **ma_values;
+} PyDictObject;
+
+PyAPI_FUNC(PyObject *) _PyDict_GetItem_KnownHash(PyObject *mp, PyObject *key,
+                                       Py_hash_t hash);
+PyAPI_FUNC(PyObject *) _PyDict_GetItemIdWithError(PyObject *dp,
+                                                  struct _Py_Identifier *key);
+PyAPI_FUNC(PyObject *) _PyDict_GetItemStringWithError(PyObject *, const char *);
+PyAPI_FUNC(PyObject *) PyDict_SetDefault(
+    PyObject *mp, PyObject *key, PyObject *defaultobj);
+PyAPI_FUNC(int) _PyDict_SetItem_KnownHash(PyObject *mp, PyObject *key,
+                                          PyObject *item, Py_hash_t hash);
+PyAPI_FUNC(int) _PyDict_DelItem_KnownHash(PyObject *mp, PyObject *key,
+                                          Py_hash_t hash);
+PyAPI_FUNC(int) _PyDict_DelItemIf(PyObject *mp, PyObject *key,
+                                  int (*predicate)(PyObject *value));
+PyDictKeysObject *_PyDict_NewKeysForClass(void);
+PyAPI_FUNC(PyObject *) PyObject_GenericGetDict(PyObject *, void *);
+PyAPI_FUNC(int) _PyDict_Next(
+    PyObject *mp, Py_ssize_t *pos, PyObject **key, PyObject **value, Py_hash_t *hash);
+
+/* Get the number of items of a dictionary. */
+#define PyDict_GET_SIZE(mp)  (assert(PyDict_Check(mp)),((PyDictObject *)mp)->ma_used)
+PyAPI_FUNC(int) _PyDict_Contains(PyObject *mp, PyObject *key, Py_hash_t hash);
+PyAPI_FUNC(PyObject *) _PyDict_NewPresized(Py_ssize_t minused);
+PyAPI_FUNC(void) _PyDict_MaybeUntrack(PyObject *mp);
+PyAPI_FUNC(int) _PyDict_HasOnlyStringKeys(PyObject *mp);
+Py_ssize_t _PyDict_KeysSize(PyDictKeysObject *keys);
+PyAPI_FUNC(Py_ssize_t) _PyDict_SizeOf(PyDictObject *);
+PyAPI_FUNC(PyObject *) _PyDict_Pop(PyObject *, PyObject *, PyObject *);
+PyObject *_PyDict_Pop_KnownHash(PyObject *, PyObject *, Py_hash_t, PyObject *);
+PyObject *_PyDict_FromKeys(PyObject *, PyObject *, PyObject *);
+#define _PyDict_HasSplitTable(d) ((d)->ma_values != NULL)
+
+/* Like PyDict_Merge, but override can be 0, 1 or 2.  If override is 0,
+   the first occurrence of a key wins, if override is 1, the last occurrence
+   of a key wins, if override is 2, a KeyError with conflicting key as
+   argument is raised.
+*/
+PyAPI_FUNC(int) _PyDict_MergeEx(PyObject *mp, PyObject *other, int override);
+PyAPI_FUNC(PyObject *) _PyDict_GetItemId(PyObject *dp, struct _Py_Identifier *key);
+PyAPI_FUNC(int) _PyDict_SetItemId(PyObject *dp, struct _Py_Identifier *key, PyObject *item);
+
+PyAPI_FUNC(int) _PyDict_DelItemId(PyObject *mp, struct _Py_Identifier *key);
+PyAPI_FUNC(void) _PyDict_DebugMallocStats(FILE *out);
+
+int _PyObjectDict_SetItem(PyTypeObject *tp, PyObject **dictptr, PyObject *name, PyObject *value);
+PyObject *_PyDict_LoadGlobal(PyDictObject *, PyDictObject *, PyObject *);
+
+/* _PyDictView */
+
+typedef struct {
+    PyObject_HEAD
+    PyDictObject *dv_dict;
+} _PyDictViewObject;
+
+PyAPI_FUNC(PyObject *) _PyDictView_New(PyObject *, PyTypeObject *);
+PyAPI_FUNC(PyObject *) _PyDictView_Intersect(PyObject* self, PyObject *other);
+
+#ifdef __cplusplus
+}
+#endif

Include/cpython/fileobject.h

+#ifndef Py_CPYTHON_FILEOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_FUNC(char *) Py_UniversalNewlineFgets(char *, int, FILE*, PyObject *);
+
+/* The std printer acts as a preliminary sys.stderr until the new io
+   infrastructure is in place. */
+PyAPI_FUNC(PyObject *) PyFile_NewStdPrinter(int);
+PyAPI_DATA(PyTypeObject) PyStdPrinter_Type;
+
+typedef PyObject * (*Py_OpenCodeHookFunction)(PyObject *, void *);
+
+PyAPI_FUNC(PyObject *) PyFile_OpenCode(const char *utf8path);
+PyAPI_FUNC(PyObject *) PyFile_OpenCodeObject(PyObject *path);
+PyAPI_FUNC(int) PyFile_SetOpenCodeHook(Py_OpenCodeHookFunction hook, void *userData);
+
+#ifdef __cplusplus
+}
+#endif

Include/cpython/interpreteridobject.h

+#ifndef Py_CPYTHON_INTERPRETERIDOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Interpreter ID Object */
+
+PyAPI_DATA(PyTypeObject) _PyInterpreterID_Type;
+
+PyAPI_FUNC(PyObject *) _PyInterpreterID_New(int64_t);
+PyAPI_FUNC(PyObject *) _PyInterpreterState_GetIDObject(PyInterpreterState *);
+PyAPI_FUNC(PyInterpreterState *) _PyInterpreterID_LookUp(PyObject *);
+
+#ifdef __cplusplus
+}
+#endif

Include/genericaliasobject.h

+// Implementation of PEP 585: support list[int] etc.
+#ifndef Py_GENERICALIASOBJECT_H
+#define Py_GENERICALIASOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_FUNC(PyObject *) Py_GenericAlias(PyObject *, PyObject *);
+PyAPI_DATA(PyTypeObject) Py_GenericAliasType;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_GENERICALIASOBJECT_H */