Ensure that the main interpreter is active (in the main thread) for signal-handling operations. This is increasingly relevant as people use subinterpreters more.

https://bugs.python.org/issue35724

Add What's New docs about the Ctrl-C improvement. Correct the issue number in the NEWS entry.

Move PyInterpreterState into the "internal" header files.

bpo-36074: Result of  `asyncio.Server.sockets` after `Server.close()` after  is not clear (GH-11987)



[bpo-36074](https://bugs.python.org/issue36074): It becomes clear on  that the None is still return for server closed.





https://bugs.python.org/issue36074

Document usage of the existing `--prompt` option in the command line help.

* Add tests for Counter order.  No behavior change.

* Update docs and tests

* Fix doctest output and capitalization

Trying to assign a value to __debug__ using the assignment operator is supposed to fail, but
a missing check for forbidden names when setting the context in the ast was preventing this behaviour. 

read() returns bytes for a file opened in binary mode,
so b'' should be used as a sentinel instead of ''.
Otherwise the loop will be infinite.

Explicitly reinitialize this every eval *just in case* someone is
calling into an embedded Python where they don't care about an uncaught
KeyboardInterrupt exception (why didn't they leave
`config.install_signal_handlers` set to `0`?!?) but then later call
`Py_Main()` itself (which *checks* this flag and dies with a signal after
its interpreter exits).  We don't want a previous embedded interpreter's
uncaught exception to trigger an unexplained signal exit from a future
`Py_Main()` based one.

https://bugs.python.org/issue31982

 Fix a crash on fork when using subinterpreters.

https://bugs.python.org/issue35584

Fix test_ssl for strict OpenSSL configuration like RHEL8 strict crypto policy.
Use older TLS version for minimum TLS version of the server SSL context if
needed, to test TLS version older than default minimum TLS version.

Allow to add HTTP headers to XML-RPC requests sent to the server.

From: https://mail.python.org/pipermail/docs/2018-December/038583.html

`object.__new__` and `object.__init__` do take one argument each,
they just don't take extra user supplied arguments.

Patch by Sanyam Khurana.

It checks that a SyntaxWarning is raised when compile specified
statement, that it is raised only once, that it is converted to
a SyntaxError when raised as exception, and that both warning and
exception objects have corresponding attributes.

bpo-34572: change _pickle unpickling to use import rather than retrieving from sys.modules (GH-9047)

Fix C implementation of pickle.loads to use importlib's locking mechanisms, and thereby avoid using partially-loaded modules.

Need to reset capturing groups between two SRE(match) callings in loops, this fixes wrong capturing groups in rare cases.

Also add a missing index in re.rst.

The wrong NEWS snippet was inadvertently included in
GH-11500, this switches to the correct one.


https://bugs.python.org/issue35704

https://bugs.python.org/issue35704