bpo-44633: Fix parameter substitution of the union type with wrong types.

[serhiy-storchaka]

A TypeError is now raised instead of returning NotImplemented.

https://bugs.python.org/issue44633

[miss-islington]

Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.10.
🐍🍒⛏🤖

[bedevere-bot]

GH-27224 is a backport of this pull request to the 3.10 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot PPC64 Fedora 3.x has failed when building commit 3ea5332.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/237/builds/555) and take a look at the build logs.
4. Check if the failure is related to this commit (3ea5332) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/237/builds/555

Summary of the results of the build (if available):

Click to see traceback logs

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remote: Total 12 (delta 10), reused 8 (delta 7), pack-reused 0�[K
From https://github.com/python/cpython
 * branch            main       -> FETCH_HEAD
Note: checking out '3ea5332a4365bdd771286b3e9692495116e9ceef'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b new_branch_name

HEAD is now at 3ea5332... [bpo-44633](https://bugs.python.org/issue44633): Fix parameter substitution of the union type with wrong types. (GH-27218)
Switched to and reset branch 'main'

./configure: line 10530: PKG_PROG_PKG_CONFIG: command not found

/tmp/ccuAKG8x.s: Assembler messages:
/tmp/ccuAKG8x.s: Fatal error: can't close Parser/parser.o: No space left on device
make: *** [Parser/parser.o] Error 1

find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
make: [clean-retain-profile] Error 1 (ignored)

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot PPC64LE Fedora Stable LTO + PGO 3.10 has failed when building commit 85b5829.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/682/builds/183) and take a look at the build logs.
4. Check if the failure is related to this commit (85b5829) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/682/builds/183

Failed tests:

• test_nntplib

Failed subtests:

• setUpClass - test.test_nntplib.NetworkedNNTP_SSLTests

Summary of the results of the build (if available):

== Tests result: FAILURE then FAILURE ==

412 tests OK.

10 slowest tests:

• test_concurrent_futures: 2 min 41 sec
• test_multiprocessing_spawn: 1 min 7 sec
• test_multiprocessing_fork: 1 min 1 sec
• test_multiprocessing_forkserver: 58.3 sec
• test_tokenize: 52.1 sec
• test_signal: 47.3 sec
• test_asyncio: 47.0 sec
• test_io: 43.4 sec
• test_unparse: 42.0 sec
• test_lib2to3: 37.0 sec

1 test failed:
test_nntplib

14 tests skipped:
test_devpoll test_gdb test_ioctl test_kqueue test_msilib
test_ossaudiodev test_startfile test_tix test_tk test_ttk_guionly
test_winconsoleio test_winreg test_winsound test_zipfile64

1 re-run test:
test_nntplib

Total duration: 3 min 12 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/test/test_nntplib.py", line 332, in setUpClass
    cls.server = cls.NNTP_CLASS(cls.NNTP_HOST, **kwargs)
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/nntplib.py", line 1025, in __init__
    super().__init__(host, port, user, password, readermode,
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/nntplib.py", line 334, in __init__
    self.sock = self._create_socket(timeout)
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/nntplib.py", line 1031, in _create_socket
    sock = _encrypt_on(sock, self.ssl_context, self.host)
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/nntplib.py", line 292, in _encrypt_on
    return context.wrap_socket(sock, server_hostname=hostname)
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/ssl.py", line 512, in wrap_socket
    return self.sslsocket_class._create(
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/ssl.py", line 1070, in _create
    self.do_handshake()
  File "/home/buildbot/buildarea/3.10.cstratak-fedora-stable-ppc64le.lto-pgo/build/Lib/ssl.py", line 1341, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:997)