GeezerVison is showing github.com — [subinterpreters] PEP 554 implementation: add interpreters module · Issue #76785 · python/cpython
[subinterpreters] PEP 554 implementation: add interpreters module #76785Description
| BPO |
32604 |
| Nosy |
@ncoghlan, @abalkin, @pitrou, @vstinner, @pmp-p, @ericsnowcurrently, @zware, @zooba, @applio, @emilyemorehouse, @pablogsal, @miss-islington, @nanjekyejoannah |
| PRs |
bpo-32604: Expose the subinterpreters C-API in a "private" stdlib module. #1748bpo-32604: Add the _xxsubinterpreters extension module under Windows. #5436bpo-32604: NULL-terminate kwlist in channel_drop_interpreter(). #5437bpo-32604: Fix memory leaks in the new _xxsubinterpreters module. #5507[3.7] bpo-32604: Fix memory leaks in the new _xxsubinterpreters module. (GH-5507) #5509bpo-32604: Make _xxsubinterpreters build on Windows #5516[3.7] bpo-32604: Make _xxsubinterpreters build on Windows (GH-5516) #5624bpo-32604: Clean up created subinterpreters before runtime finalization. #5709[3.7] bpo-32604: Clean up created subinterpreters before runtime finalization. (gh-5709) #5710bpo-32604: Swap threads only if the interpreter is different. #5778[3.7] bpo-32604: Swap threads only if the interpreter is different. (gh-5778) #5783bpo-32604: Remove xid registry. #6813bpo-32604: Improve subinterpreter tests. #6914bpo-32604: Implement force-closing channels. #6937bpo-33615: avoid extra decref #7251bpo-33615: Temporarily disable a test that is triggering crashes on a few buildbots. #7288bpo-33724: Use the right format code for int64_t in subinterpreters code. #7330bpo-32604: [_xxsubinterpreters] Propagate exceptions. #19768bpo-32604: Add support for a "default" arg in channel_recv(). #19770bpo-32604: [_xxsubinterpreters] Add channel_send_wait(). #19829Revert "bpo-32604: [_xxsubinterpreters] Propagate exceptions. (GH-19768)" #20089gh-76785: Multiple Interpreters in the Stdlib (PEP 554) #18817bpo-32604: PEP 554 for use in test suite #19985Revert "bpo-32604: PEP 554 for use in test suite (GH-19985)" #20465bpo-32604: Fix reference leak in select module #20600bpo-32604: Recommit "bpo-32604: PEP 554 for use in test suite (GH-19985)" #20611bpo-32604: Disable failing tests #20777bpo-32604: Clean up test.support.interpreters. #20926 |
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GitHub fields:
assignee = 'https://github.com/ericsnowcurrently'
closed_at = None
created_at = <Date 2018-01-20.01:58:01.942>
labels = ['expert-subinterpreters', 'type-feature', '3.10', 'docs']
title = '[subinterpreters] PEP 554 implementation: add interpreters module'
updated_at = <Date 2020-06-17.00:42:48.323>
user = 'https://github.com/ericsnowcurrently' bugs.python.org fields:
activity = <Date 2020-06-17.00:42:48.323>
actor = 'eric.snow'
assignee = 'eric.snow'
closed = False
closed_date = None
closer = None
components = ['Documentation', 'Subinterpreters']
creation = <Date 2018-01-20.01:58:01.942>
creator = 'eric.snow'
dependencies = []
files = []
hgrepos = []
issue_num = 32604
keywords = ['patch']
message_count = 66.0
messages = ['310314', '310316', '310317', '310318', '310448', '310562', '311210', '311211', '311212', '311217', '311218', '311219', '311220', '311222', '311224', '311299', '311533', '311534', '311536', '311538', '312001', '312004', '312260', '312262', '312288', '312362', '312367', '312368', '312369', '312370', '312372', '312443', '312447', '312837', '312888', '312975', '312976', '312979', '313010', '316657', '316717', '316850', '316936', '318333', '318479', '319560', '367573', '368349', '368395', '368846', '368849', '368851', '368899', '368902', '369378', '369454', '369455', '370130', '370140', '370631', '370660', '371157', '371173', '371176', '371704', '371707']
nosy_count = 13.0
nosy_names = ['ncoghlan', 'belopolsky', 'pitrou', 'vstinner', 'pmpp', 'eric.snow', 'zach.ware', 'steve.dower', 'davin', 'emilyemorehouse', 'pablogsal', 'miss-islington', 'nanjekyejoannah']
pr_nums = ['1748', '5436', '5437', '5507', '5509', '5516', '5624', '5709', '5710', '5778', '5783', '6813', '6914', '6937', '7251', '7288', '7330', '19768', '19770', '19829', '20089', '18817', '19985', '20465', '20600', '20611', '20777', '20926']
priority = None
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue32604'
versions = ['Python 3.10'] Linked PRs
Activityericsnowcurrently commented on Jan 20, 2018 In the interest of getting something landed for 3.7, so we can start using it in tests, I'm putting up a patch for a low-level interpreters module. In some ways this is a precursor for issue bpo-30439, which will add a proper public stdlib module in 3.8.
The module I'm adding draws from the ideas in PEP-554 (particularly for channels). Consequently, this will also give us an opportunity to try out some of the semantics from the PEP to give us better ideas for 3.8.
I expect to have some follow-on patches to facilitate simpler use in tests. This patch is big enough already. :) ericsnowcurrently commented on Jan 20, 2018 @ned, it may be a little tight to land this given the time left before beta 1. However, this is meant as a tool for us to use in the test suite (particularly to test the subinterpreter C-API). So I'm arguing that, if necessary, it would still be okay to land this after the feature freeze. (I'm still hoping to get this in before the cutoff.) What do you think? ericsnowcurrently commented on Jan 20, 2018 @nick, I may make the name change you suggested in issue bpo-30439 ("_subinterpreters"). ericsnowcurrently commented on Jan 20, 2018 FYI, there are a few things I need to clean up in the PR. However, I expect that those changes will be minor relative to the the whole patch, so I wanted to get the ball rolling on a review. :) ned-deily commented on Jan 22, 2018 @eric, given the breadth of change introduced in the PR (including adding a new extension), I think it would be best if at all possible to get it in for beta 1 if we can resolve the review comments in time. If necessary and if there are no objections from other core developers, I would be willing to consider making an exception and allowing it into beta 2 as long as it remains a private interface. If it looks like it won't be in releasable shape by then, I think you should hold off for 3.8; doing otherwise would be unfair to others and to our downstream beta users / testers, for example, even if it is private, adding a new extension and setup.py changes potentially affect downstream packagers. ericsnowcurrently commented on Jan 24, 2018 Sounds good, Ned. Thanks for taking a look. I should have everything finished up by Friday, so I'm hopeful for landing the change before the deadline. I may have a few minor tweaks to make after that, but I'll discuss that with you before making any changes if that happens. ericsnowcurrently commented on Jan 30, 2018 ericsnowcurrently commented on Jan 30, 2018 I've merged the patch without Windows support, which shouldn't be a problem given the purpose of the extension module. I've also added a PR for get the module building under Windows. I'd like to get that resolved ASAP. ned-deily commented on Jan 30, 2018 ericsnowcurrently commented on Jan 30, 2018 Yeah, I'm looking into it. Also, I noticed some refleaks that I'll be sorting out. ericsnowcurrently commented on Jan 30, 2018 On 4 of the buildbots:
======================================================================
ERROR: test_drop_multiple_times (test.test__xxsubinterpreters.ChannelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py", line 890, in test_drop_multiple_times
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)======================================================================
ERROR: test_drop_single_user (test.test__xxsubinterpreters.ChannelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py", line 848, in test_drop_single_user
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)======================================================================
ERROR: test_drop_used_multiple_times_by_single_user (test.test__xxsubinterpreters.ChannelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py", line 957, in test_drop_used_multiple_times_by_single_user
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)======================================================================
ERROR: test_drop_with_unused_items (test.test__xxsubinterpreters.ChannelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/srv/buildbot/buildarea/3.x.bolen-ubuntu/build/Lib/test/test__xxsubinterpreters.py", line 899, in test_drop_with_unused_items
interpreters.channel_drop_interpreter(cid, send=True, recv=True)
SystemError: More keyword list entries (7) than format specifiers (3)added 4 commits that reference this issue on Nov 7, 2024gh-76785: Minor Cleanup of Exception-related Cross-interpreter State (g… gh-76785: Improved Subinterpreters Compatibility with 3.12 (1/2) (gh-… gh-76785: Improved Subinterpreters Compatibility with 3.12 (2/2) (gh-… AA-Turner commented on Aug 11, 2025
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