All call sites pass NULL for `recode_encoding`, so this path is
completely untested.  That's been true since before Python 3.0.
It adds significant complexity to this logic, so it's best to
take it out.

All call sites now have a literal NULL, and that's been true since
commit 768921cf eliminated a conditional (`foo ? bar : NULL`) at
the call site in Python/ast.c where we're parsing a bytes literal.
But even before then, that condition `foo` had been a constant
since unadorned string literals started meaning Unicode, in commit
572dbf8f aka v3.0a1~1035 .

The `unicode` parameter is already unused, so mark it as unused too.
The code that acted on it was also taken out before Python 3.0, in
commit 8d30cc01 aka v3.0a1~1031 .

The function (PyBytes_DecodeEscape) is exposed in the API, but it's
never been documented.

* subprocess: Add user, group and extra_groups paremeters to subprocess.Popen

This adds a `user` parameter to the Popen constructor that will call
setreuid() in the child before calling exec(). This allows processes
running as root to safely drop privileges before running the subprocess
without having to use a preexec_fn.

This also adds a `group` parameter that will call setregid() in
the child process before calling exec().

Finally an `extra_groups` parameter was added that will call
setgroups() to set the supplimental groups.

The "--" should not be included with long options passed to
getopt.getopt.

Fixes https://bugs.python.org/issue37803

Co-Authored-By: Brandt Bucher <brandtbucher@gmail.com>

Interned string needs to be decref'd



https://bugs.python.org/issue38138



Automerge-Triggered-By: @matrixise

The defines are required for OpenSSL 1.0.2 and LibreSSL.


https://bugs.python.org/issue38134



Automerge-Triggered-By: @tiran

* 1. add test case with wrong behavior
* 2. fix bug when max_length == -1
* 3. allow b"" as valid input data for decompress_buf()
* 4. when max_length >= 0, let needs_input mechanism works
* add more asserts to test case

This reverts commit 355f3e1e.

bpo-38135

Three internal cpython events were not documented, yet.
Signed-off-by: Christian Heimes <christian@python.org>



https://bugs.python.org/issue37363

Test that they do not keep too many file descriptors open for the host OS in a reasonable test scenario.

See [bpo-37935](https://bugs.python.org/issue37935).

Signed-off-by: Christian Heimes <christian@python.org>

* Add a note to the PyModule_AddObject docs.

* Correct example usages of PyModule_AddObject.

* Whitespace.

* Clean up wording.

* 📜🤖 Added by blurb_it.

* First code review.

* Add < 0 in the tests with PyModule_AddObject

Signed-off-by: Christian Heimes <christian@python.org>

Does no longer work since Sphinx moved the trim_doctest_flag option in
the configuration.

Prefer client or TLSv1_2 in examples
Signed-off-by: Christian Heimes <christian@python.org>

Co-Authored-by: Xuanji Li <xuanji@gmail.com>


https://bugs.python.org/issue9938



Automerge-Triggered-By: @matrixise

* bpo-13927: time.ctime and time.asctime return string explantion

* Add note explaining that time.ctime and time.asctime returns a space padded date value in case it contains a single digit date

* Reformat linebreaks

Fixes https://bugs.python.org/issue38008

An exception may occur during a PyObject_IsSubclass() call.

This fixes a regression from 3.5. In recent releases, `getsockname()` in the AF_CAN case has returned a string.

* bpo-38121: Sync importlib.metadata with 0.22 backport

* 📜🤖 Added by blurb_it.

The PyArena type is not part of the limited API, so these headers
shouldn't be part of it either.

Unicode has grown since Python first gained support for it,
when Unicode itself was still rather new.

This pair of test cases was added in commit 6a20ee7d back in 2000,
and they haven't needed to change much since then.  But do change
them to look beyond the Basic Multilingual Plane (range(0x10000))
and cover all 17 planes of Unicode's final form.

This adds about 5 seconds to the test suite's runtime.  Mark the
tests as CPU-using accordingly.