gh-80480: remove deprecated 'u' type code (array)

[skirpichev]

• Issue: array: Add 'w' type and deprecate 'u' type. #80480

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #32933925 | 📁 Comparing 37738f4 against main (4ae1a26)

  🔍 Preview build  

77 files changed · + 1 added · ± 76 modified

+ Added

• deprecations/pending-removal-in-3.21.html

± Modified

• glossary.html
• index.html
• c-api/dict.html
• c-api/import.html
• c-api/sentinel.html
• c-api/slots.html
• c-api/stable.html
• c-api/threads.html
• c-api/unicode.html
• deprecations/index.html
• and 66 more...

[sobolevn]

Please, don't forget to fix docs in Doc/library/array.rst

[sobolevn]

LGTM, but I am not a module expert, so let's wait for one to merge this :)

[skirpichev]

CC @vstinner

[vstinner]

I cannot find remaining references to the u format in (updated) array, memoryview and struct: good!

Note: ctypes.c_wchar uses _type_ = "u" but this type code is unrelated to struct type codes. This ctypes is not deprecated.

[vstinner]

Tests / Ubuntu (free-threading) / build and test (ubuntu-24.04-arm) (pull_request)Failing after 1m
Tests / Ubuntu / build and test (ubuntu-24.04-arm) (pull_request)Failing after 1m
Tests / WASI / build and test (pull_request)Failing after 1m

Strange, the 3 jobs failed with Error: The operation was canceled. Canceled by what? I will re-run these jobs once other jobs completed.

[vstinner]

LGTM. Thanks for the update.

Reuse array.typecodes makes the code easier to maintain.

[vstinner]

Merged. Thanks for the change.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Debian root 3.x (tier-1) has failed when building commit 46b5e3e.

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/#/builders/345/builds/14390) and take a look at the build logs.
4. Check if the failure is related to this commit (46b5e3e) 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/#/builders/345/builds/14390

Failed tests:

• test_embed

Failed subtests:

• test_thread_state_ensure - test.test_embed.AuditingTests.test_thread_state_ensure

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

==

Click to see traceback logs

Traceback (most recent call last):
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/test_embed.py", line 2036, in test_thread_state_ensure
    self.run_embedded_interpreter("test_thread_state_ensure")
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/test_embed.py", line 161, in run_embedded_interpreter
    self.assertEqual(p.returncode, returncode,
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
                     "bad returncode %d, stderr is %r" %
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                     (p.returncode, err))
                     ^^^^^^^^^^^^^^^^^^^^
AssertionError: -6 != 0 : bad returncode -6, stderr is "_testembed: ./Programs/_testembed.c:2741: test_thread_state_ensure: Assertion `_Py_atomic_load_int(&data.done) == 1' failed.\n"


Traceback (most recent call last):
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/support/__init__.py", line 948, in gc_collect
    gc.collect()
    ~~~~~~~~~~^^
ResourceWarning: unclosed file <_io.FileIO name=13 mode='wb' closefd=True>


Traceback (most recent call last):
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/support/__init__.py", line 948, in gc_collect
    gc.collect()
    ~~~~~~~~~~^^
ResourceWarning: unclosed file <_io.FileIO name=11 mode='wb' closefd=True>

[vstinner]

Hi! The buildbot AMD64 Debian root 3.x (tier-1) has failed when building commit 46b5e3e.
test_thread_state_ensure - test.test_embed.AuditingTests.test_thread_state_ensure

That's the unrelated issue gh-150391.