[3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (GH-134778)

[markshannon]

(cherry picked from commit 00122c8)

• Issue: Defining iterator in a separate class no longer works in 3.13 #128161

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 CentOS9 NoGIL Refleaks 3.13 (tier-1) has failed when building commit 814ac0d.

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/1605/builds/833) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1605/builds/833

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

remote: Enumerating objects: 13, done. remote: Counting objects: 8% (1/12) remote: Counting objects: 16% (2/12) remote: Counting objects: 25% (3/12) remote: Counting objects: 33% (4/12) remote: Counting objects: 41% (5/12) remote: Counting objects: 50% (6/12) remote: Counting objects: 58% (7/12) remote: Counting objects: 66% (8/12) remote: Counting objects: 75% (9/12) remote: Counting objects: 83% (10/12) remote: Counting objects: 91% (11/12) remote: Counting objects: 100% (12/12) remote: Counting objects: 100% (12/12), done. remote: Total 13 (delta 11), reused 11 (delta 11), pack-reused 1 (from 1)  From https://github.com/python/cpython * branch 3.13 -> FETCH_HEAD Note: switching to '814ac0d58789fd544855a6c1afb9d89a690a0c3b'. 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 switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 814ac0d5878 [3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (backport of GH-134778) (GH-134788) Switched to and reset branch '3.13' configure: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)make: *** [Makefile:2246: buildbottest] Error 2

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL8 Refleaks 3.13 (tier-3) has failed when building commit 814ac0d.

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/1440/builds/946) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1440/builds/946

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

remote: Enumerating objects: 13, done. remote: Counting objects: 8% (1/12) remote: Counting objects: 16% (2/12) remote: Counting objects: 25% (3/12) remote: Counting objects: 33% (4/12) remote: Counting objects: 41% (5/12) remote: Counting objects: 50% (6/12) remote: Counting objects: 58% (7/12) remote: Counting objects: 66% (8/12) remote: Counting objects: 75% (9/12) remote: Counting objects: 83% (10/12) remote: Counting objects: 91% (11/12) remote: Counting objects: 100% (12/12) remote: Counting objects: 100% (12/12), done. remote: Total 13 (delta 11), reused 11 (delta 11), pack-reused 1 (from 1)  From https://github.com/python/cpython * branch 3.13 -> FETCH_HEAD Note: switching to '814ac0d58789fd544855a6c1afb9d89a690a0c3b'. 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 switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 814ac0d5878 [3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (backport of GH-134778) (GH-134788) Switched to and reset branch '3.13' configure: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)make: *** [Makefile:2252: buildbottest] Error 2

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL9 Refleaks 3.13 (tier-3) has failed when building commit 814ac0d.

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/1575/builds/862) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1575/builds/862

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

remote: Enumerating objects: 13, done. remote: Counting objects: 8% (1/12) remote: Counting objects: 16% (2/12) remote: Counting objects: 25% (3/12) remote: Counting objects: 33% (4/12) remote: Counting objects: 41% (5/12) remote: Counting objects: 50% (6/12) remote: Counting objects: 58% (7/12) remote: Counting objects: 66% (8/12) remote: Counting objects: 75% (9/12) remote: Counting objects: 83% (10/12) remote: Counting objects: 91% (11/12) remote: Counting objects: 100% (12/12) remote: Counting objects: 100% (12/12), done. remote: Total 13 (delta 11), reused 11 (delta 11), pack-reused 1 (from 1)  From https://github.com/python/cpython * branch 3.13 -> FETCH_HEAD Note: switching to '814ac0d58789fd544855a6c1afb9d89a690a0c3b'. 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 switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 814ac0d5878 [3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (backport of GH-134778) (GH-134788) Switched to and reset branch '3.13' make: *** [Makefile:2252: buildbottest] Error 2

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 RHEL8 Refleaks 3.13 (tier-1) has failed when building commit 814ac0d.

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/1385/builds/948) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1385/builds/948

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

remote: Enumerating objects: 13, done. remote: Counting objects: 8% (1/12) remote: Counting objects: 16% (2/12) remote: Counting objects: 25% (3/12) remote: Counting objects: 33% (4/12) remote: Counting objects: 41% (5/12) remote: Counting objects: 50% (6/12) remote: Counting objects: 58% (7/12) remote: Counting objects: 66% (8/12) remote: Counting objects: 75% (9/12) remote: Counting objects: 83% (10/12) remote: Counting objects: 91% (11/12) remote: Counting objects: 100% (12/12) remote: Counting objects: 100% (12/12), done. remote: Total 13 (delta 11), reused 11 (delta 11), pack-reused 1 (from 1)  From https://github.com/python/cpython * branch 3.13 -> FETCH_HEAD Note: switching to '814ac0d58789fd544855a6c1afb9d89a690a0c3b'. 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 switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 814ac0d5878 [3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (backport of GH-134778) (GH-134788) Switched to and reset branch '3.13' configure: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)make: *** [Makefile:2252: buildbottest] Error 2

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 FreeBSD Refleaks 3.13 (tier-3) has failed when building commit 814ac0d.

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/1615/builds/823) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1615/builds/823

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

Traceback (most recent call last): File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/threading.py", line 1043, in _bootstrap_innerself.run() ~~~~~~~~^^ File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/concurrent/futures/process.py", line 353, in run p =self.processes.pop(result_item.exit_pid) KeyError: 58508 Traceback (most recent call last): File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/multiprocessing/forkserver.py", line 279, in main code = _serve_one(child_r, fds, unused_fds, old_handlers) File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/multiprocessing/forkserver.py", line 319, in _serve_one code = spawn._main(child_r, parent_sentinel) File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/multiprocessing/spawn.py", line 132, in _mainself= reduction.pickle.load(from_parent) File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/multiprocessing/synchronize.py", line 115, in __setstate__self._semlock = _multiprocessing.SemLock._rebuild(*state) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^FileNotFoundError: [Errno 2] No such file or directory Timeout (0:45:00)! Thread 0x0000000831df2400 (most recent call first): File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/threading.py", line 359 in wait File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/multiprocessing/queues.py", line 249 in _feed File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/threading.py", line 994 in run File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/threading.py", line 1043 in _bootstrap_inner File "/buildbot/buildarea/3.13.ware-freebsd.refleak/build/Lib/threading.py", line 1014 in _bootstrap 

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot aarch64 RHEL8 Refleaks 3.13 (tier-2) has failed when building commit 814ac0d.

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/1445/builds/694) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1445/builds/694

Failed tests:

• test_builtin
• test_coroutines

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

remote: Enumerating objects: 13, done. remote: Counting objects: 8% (1/12) remote: Counting objects: 16% (2/12) remote: Counting objects: 25% (3/12) remote: Counting objects: 33% (4/12) remote: Counting objects: 41% (5/12) remote: Counting objects: 50% (6/12) remote: Counting objects: 58% (7/12) remote: Counting objects: 66% (8/12) remote: Counting objects: 75% (9/12) remote: Counting objects: 83% (10/12) remote: Counting objects: 91% (11/12) remote: Counting objects: 100% (12/12) remote: Counting objects: 100% (12/12), done. remote: Compressing objects: 9% (1/11) remote: Compressing objects: 18% (2/11) remote: Compressing objects: 27% (3/11) remote: Compressing objects: 36% (4/11) remote: Compressing objects: 45% (5/11) remote: Compressing objects: 54% (6/11) remote: Compressing objects: 63% (7/11) remote: Compressing objects: 72% (8/11) remote: Compressing objects: 81% (9/11) remote: Compressing objects: 90% (10/11) remote: Compressing objects: 100% (11/11) remote: Compressing objects: 100% (11/11), done. remote: Total 13 (delta 1), reused 6 (delta 1), pack-reused 1 (from 1)  From https://github.com/python/cpython * branch 3.13 -> FETCH_HEAD Note: switching to '814ac0d58789fd544855a6c1afb9d89a690a0c3b'. 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 switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 814ac0d5878 [3.13] gh-128161: Remove redundant GET_ITER from list comprehension code (backport of GH-134778) (GH-134788) Switched to and reset branch '3.13' make: *** [Makefile:2252: buildbottest] Error 2

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora Stable Refleaks 3.13 (tier-3) has failed when building commit 814ac0d.

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/1662/builds/207) and take a look at the build logs.
4. Check if the failure is related to this commit (814ac0d) 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/1662/builds/207

Failed tests:

• test_builtin
• test.test_multiprocessing_forkserver.test_processes
• test_coroutines

Failed subtests:

• test_repr_rlock - test.test_multiprocessing_forkserver.test_processes.WithProcessesTestLock.test_repr_rlock

Test leaking resources:

• test_coroutines: memory blocks
• test_builtin: memory blocks
• test_coroutines: references
• test_builtin: references

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

==

Click to see traceback logs

Traceback (most recent call last): File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-s390x.refleak/build/Lib/test/_test_multiprocessing.py", line 1492, in test_repr_rlockself.assertEqual('<RLock(SomeOtherThread, nonzero)>', repr(lock)) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^AssertionError: '<RLock(SomeOtherThread, nonzero)>' != '<RLock(None, 0)>' - <RLock(SomeOtherThread, nonzero)> + <RLock(None, 0)> 

[markshannon]

Refleaks should be fixed by #134799