Merge branch 'add-missing-null-checks' of github.com:chgnrdv/cpython into add-missing-null-checks

Author: chgnrdv

.github/CODEOWNERS

@@ -22,6 +22,7 @@ configure*                    @erlend-aasland @corona10
 **/*hamt*                     @1st1
 Objects/set*                  @rhettinger
 Objects/dict*                 @methane @markshannon
+Objects/typevarobject.c       @JelleZijlstra
 Objects/type*                 @markshannon
 Objects/codeobject.c          @markshannon
 Objects/frameobject.c         @markshannon
@@ -33,6 +34,7 @@ Python/flowgraph.c            @markshannon @iritkatriel
 Python/ast_opt.c              @isidentical
 Lib/test/test_patma.py        @brandtbucher
 Lib/test/test_peepholer.py    @brandtbucher
+Lib/test/test_type_*.py       @JelleZijlstra
 
 # Exceptions
 Lib/traceback.py              @iritkatriel

.github/dependabot.yml

@@ -12,3 +12,10 @@ updates:
         update-types:
           - "version-update:semver-minor"
           - "version-update:semver-patch"
+  - package-ecosystem: "pip"
+    directory: "/Tools/clinic/"
+    schedule:
+      interval: "monthly"
+    labels:
+      - "skip issue"
+      - "skip news"

.github/workflows/mypy.yml

@@ -0,0 +1,39 @@
+# Workflow to run mypy on select parts of the CPython repo
+name: mypy
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - "Tools/clinic/**"
+      - ".github/workflows/mypy.yml"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+env:
+  PIP_DISABLE_PIP_VERSION_CHECK: 1
+  FORCE_COLOR: 1
+  TERM: xterm-256color  # needed for FORCE_COLOR to work on mypy on Ubuntu, see https://github.com/python/mypy/issues/13817
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  mypy:
+    name: Run mypy on Tools/clinic/
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+          cache: pip
+          cache-dependency-path: Tools/clinic/requirements-dev.txt
+      - run: pip install -r Tools/clinic/requirements-dev.txt
+      - run: mypy --config-file Tools/clinic/mypy.ini

Doc/library/ast.rst

@@ -1724,6 +1724,7 @@ Function and class definitions
             body=[
                 FunctionDef(
                     name='f',
+                    typeparams=[],
                     args=arguments(
                         posonlyargs=[],
                         args=[
@@ -1847,6 +1848,7 @@ Function and class definitions
             body=[
                 ClassDef(
                     name='Foo',
+                    typeparams=[],
                     bases=[
                         Name(id='base1', ctx=Load()),
                         Name(id='base2', ctx=Load())],
@@ -1885,6 +1887,7 @@ Async and await
         body=[
             AsyncFunctionDef(
                 name='f',
+                typeparams=[],
                 args=arguments(
                     posonlyargs=[],
                     args=[],

Doc/library/atexit.rst

@@ -20,6 +20,9 @@ at interpreter termination time they will be run in the order ``C``, ``B``,
 program is killed by a signal not handled by Python, when a Python fatal
 internal error is detected, or when :func:`os._exit` is called.
 
+**Note:** The effect of registering or unregistering functions from within
+a cleanup function is undefined.
+
 .. versionchanged:: 3.7
     When used with C-API subinterpreters, registered functions
     are local to the interpreter they were registered in.

Doc/library/collections.abc.rst

@@ -14,10 +14,7 @@
 
 .. testsetup:: *
 
-   import warnings
-   # Ignore warning when ByteString is imported
-   with warnings.catch_warnings(action='ignore', category=DeprecationWarning):
-       from collections.abc import *
+   from collections.abc import *
    import itertools
    __name__ = '<doctest>'
 

Doc/library/functions.rst

@@ -168,6 +168,13 @@ are always available.  They are listed here in alphabetical order.
    If :func:`sys.breakpointhook` is not accessible, this function will
    raise :exc:`RuntimeError`.
 
+   By default, the behavior of :func:`breakpoint` can be changed with
+   the :envvar:`PYTHONBREAKPOINT` environment variable.
+   See :func:`sys.breakpointhook` for usage details.
+
+   Note that this is not guaranteed if :func:`sys.breakpointhook`
+   has been replaced.
+
    .. audit-event:: builtins.breakpoint breakpointhook breakpoint
 
    .. versionadded:: 3.7

Doc/library/http.client.rst

@@ -394,6 +394,17 @@ HTTPConnection Objects
       one will be automatically generated and transmitted if not provided in
       the headers argument.
 
+
+.. method:: HTTPConnection.get_proxy_response_headers()
+
+   Returns a dictionary with the headers of the response received from
+   the proxy server to the CONNECT request.
+
+   If the CONNECT request was not sent, the method returns an empty dictionary.
+
+   .. versionadded:: 3.12
+
+
 .. method:: HTTPConnection.connect()
 
    Connect to the server specified when the object was created.  By default,

Doc/library/logging.config.rst

@@ -111,7 +111,7 @@ in :mod:`logging` itself) and defining handlers which are declared either in
                                     they or their ancestors are explicitly named
                                     in the logging configuration.
 
-    :param encoding: The encoding used to open file when *fname* is filename.
+   :param encoding: The encoding used to open file when *fname* is filename.
 
    .. versionchanged:: 3.4
       An instance of a subclass of :class:`~configparser.RawConfigParser` is

Doc/library/random.rst

@@ -334,8 +334,10 @@ be found in any statistics text.
 
 .. function:: gammavariate(alpha, beta)
 
-   Gamma distribution.  (*Not* the gamma function!)  Conditions on the
-   parameters are ``alpha > 0`` and ``beta > 0``.
+   Gamma distribution.  (*Not* the gamma function!)  The shape and
+   scale parameters, *alpha* and *beta*, must have positive values.
+   (Calling conventions vary and some sources define 'beta'
+   as the inverse of the scale).
 
    The probability distribution function is::
 
@@ -346,7 +348,8 @@ be found in any statistics text.
 
 .. function:: gauss(mu=0.0, sigma=1.0)
 
-   Normal distribution, also called the Gaussian distribution.  *mu* is the mean,
+   Normal distribution, also called the Gaussian distribution.
+   *mu* is the mean,
    and *sigma* is the standard deviation.  This is slightly faster than
    the :func:`normalvariate` function defined below.