Needs backport to 3.7. In 3.6 the description is correct.
(cherry picked from commit b83d917f)
Co-authored-by: Andriy Maletsky <andriy.maletsky@gmail.com>

https://bugs.python.org/issue35075
(cherry picked from commit bf46a09d)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

(cherry picked from commit 4b5e62db)
Co-authored-by: Pablo Aguiar <scorphus@gmail.com>

Don't call _Py_FatalError_PrintExc() nor flush_std_files() if the
current thread doesn't hold the GIL, or if the current thread
has no Python state thread.
(cherry picked from commit 3a228ab1)
Co-authored-by: Victor Stinner <vstinner@redhat.com>

_io.IncrementalNewlineDecoder's initializer possibly assigns out-of-range
value to the bitwise struct field.
(cherry picked from commit b08746bf)
Co-authored-by: Xiang Zhang <angwerzx@126.com>

(cherry picked from commit c9a61689)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>

(cherry picked from commit 3f819ca1)

The root widget was accessed as a global variable in the Application's method.
(cherry picked from commit a80af770)
Co-authored-by: Daniel Lovell <lovell.daniel92@gmail.com>

Compilation fails on macOS because _Py_GetForceASCII() wasn't define:
always implement implement (default implementation: just return 0).

* Add _Py_GetForceASCII(): check if Python forces the usage of ASCII
  in Py_DecodeLocale() and Py_EncodeLocale().
* initfsencoding() now uses ASCII if _Py_GetForceASCII() is true.

After commit d0f49d2f, the output of the
test suite is always buffered as the test output needs to be included in
the JUnit file in same cases (as when a test fails). This has the
consequence that printing or using debuggers (like pdb) in the test
suite does not result in a good user experience anymore.

This commit modifies the test suite runner so it only captures the test
output when the JUnit file is requested to fix the regression so prints
and debuggers are usable again.
(cherry picked from commit 02277482)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

(cherry picked from commit c0799ec9)
Co-authored-by: Gus Goulart <augusto@goulart.me>

(cherry picked from commit 53835e92)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>

Topics include opening, title and status bar, .py* extension, and running.
(cherry picked from commit ea9c8bd4)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

* Fix potential division by zero in BZ2_Malloc()
* Avoid division by zero in PyLzma_Malloc()
* Avoid division by zero and integer overflow in PyZlib_Malloc()

Reported by Svace static analyzer.
(cherry picked from commit 3d4fabb2)
Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>

Add a paragraph in "Help and preferences", "Help sources" subsection.
(cherry picked from commit 18032632)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 18d57b4d)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

(cherry picked from commit 68d6dc07)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 913876d8)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

https://bugs.python.org/issue35089
(cherry picked from commit c8a8d6b3)
Co-authored-by: Sebastian Rittau <srittau@rittau.biz>

Fix a bug I introduced in GH-9864 by which coroutines are treated as synonymous of function coroutines.

Also, fix the same mistake (coroutines == function coroutines) already present in other parts of the reference.

I'm very sorry for the hassle.
(cherry picked from commit 95f68b10)
Co-authored-by: Andrés Delfino <adelfino@gmail.com>

We now use git and backporting instead of hg and forward merging.
(cherry picked from commit 2b555fc1)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

There is only one trivial change to idle.rst. Nearly all the changes to help.html are the elimination of chapter and section numbers on headers due to changes in the build system. help.py no longer requires header numbering.
(cherry picked from commit db40cb50)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

(cherry picked from commit 53125a53)
Co-authored-by: Steve Dower <steve.dower@microsoft.com>

(cherry picked from commit 40bf6cff)
Co-authored-by: nsrip <nick.ripley@me.com>

Referring to ``pytest`` as ``py.test`` is deprecated.
(cherry picked from commit d855f2fd)
Co-authored-by: Andreas Pelme <andreas@pelme.se>

Specify that blocks are non-overlapping. Change '!=' to '<'.
(cherry picked from commit d9bff4e8)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

"threadsafe"
(cherry picked from commit 4e3a53bc)
Co-authored-by: Benjamin Peterson <benjamin@python.org>

Declare functions with EXTINLINE:

* mpd_del()
* mpd_uint_zero()
* mpd_qresize()
* mpd_qresize_zero()
* mpd_minalloc()

These functions are implemented with "inline" or "ALWAYS_INLINE", but
declared without inline which cause linker error on Visual Studio in
Debug mode when using /Ob1.
(cherry picked from commit 3b1cba37)
Co-authored-by: Victor Stinner <vstinner@redhat.com>

* bpo-34576 - Fix the formatting for security considerations in http.server.rst (#10005)

(cherry picked from commit eeab510b)

Prior to this revision, after the shutdown of a `BaseServer`,
the server accepted a last single request
if it was sent between the server socket polling
and the polling timeout.

This can be problematic for instance for a server restart
for which you do not want to interrupt the service,
by not closing the listening socket during the restart.
One request failed because of this behavior.

Note that only one request failed,
following requests were not accepted, as expected.
(cherry picked from commit 10cb3760)
Co-authored-by: Denis Ledoux <be.ledoux.denis@gmail.com>

(cherry picked from commit e483f024)
Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>

(cherry picked from commit ddb961d2)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

https://bugs.python.org/issue35038
(cherry picked from commit 1770d1c5)
Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>

.o generated by clang in LTO mode actually are LLVM bitcode files, which
leads to a few errors during configure/build step:

- add lto flags to the BASECFLAGS instead of CFLAGS, as CFLAGS are used
  to build autoconf test case, and some are not compatible with clang LTO
  (they assume binary in the .o, not bitcode)
- force llvm-ar instead of ar, as ar is not aware of .o files generated
  by clang -flto
(cherry picked from commit 5ad36f9b)
Co-authored-by: serge-sans-paille <serge.guelton@telecom-bretagne.eu>

(cherry picked from commit 890423f7)
Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

The spec gets stored on modules with the __spec__ attribute, not spec.
(cherry picked from commit 78401f71)
Co-authored-by: orlnub123 <orlnub123@gmail.com>