✔️ Linting Passed

All linting checks passed. Your pull request is in excellent shape! ☀️

_{Generated for commit: a08e849. Link to the linter CI: here}

Summary for pylatest_pip_openblas_pandas_linux-64 CI timings:

• coverage does make running the tests 2 times slower on Python 3.12
• COVERAGE_CORE=sysmon makes the problem even worse ...

Here are the details:

• update to Python 3.12 build log test only ~32 minutes (total ~40 minutes)
  

• coverage turned off build log test only ~16 minutes (total ~26 minutes)
  

• COVERAGE_CORE=sysmon build log test only ~ 62 minutes 😱 (total ~73 minutes). Second run to double-check build log test only ~57 minutes (total ~68 minutes)
  

Other builds seem to run a lot faster without coverage e.g. the OSX ones. Right now here are the lock-files using Python 3.12:

❯ rg -l python-3.12 build_tools/**/*
build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock
build_tools/github/pylatest_conda_forge_cuda_array-api_linux-64_conda.lock
build_tools/azure/pylatest_conda_mkl_no_openmp_osx-64_conda.lock
build_tools/azure/pylatest_pip_openblas_pandas_linux-64_conda.lock
build_tools/azure/pylatest_pip_scipy_dev_linux-64_conda.lock
build_tools/github/pylatest_conda_forge_cuda_array-api_linux-64_conda.lock
build_tools/azure/pylatest_pip_openblas_pandas_linux-64_conda.lock
build_tools/azure/pylatest_conda_mkl_no_openmp_osx-64_conda.lock
build_tools/azure/pylatest_conda_forge_mkl_osx-64_conda.lock
build_tools/azure/pylatest_pip_scipy_dev_linux-64_conda.lock

Thanks for the analysis. Maybe we can update the CPython version pin comment to reference the upstream issue at python/cpython#107674 and use CPython 3.11 (instead of CPython 3.9) in the mean time.

I have opened coveragepy/coveragepy#1812 to see what they say.

I'll update the lock-files to use Python 3.11.

No idea why codecov status is pending, but that should not prevent this from being merged 😉

Edit: I triggered a build to have a fully green CI.