BUG: Python 3.14 no-gil version cannot install pandas on Windows

[xldistance]

Pandas version checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

python3.14t -m pip install pandas

Issue Description

H:\Desktop>python3.14t -m pip install pandas
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting pandas
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/33/01/d40b85317f86cf08d853a4f495195c73815fdf205eef3993821720274518/pandas-2.3.3.tar.gz (4.5 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [2 lines of output]

      meson-python: error: Could not execute meson:
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Expected Behavior

Python 3.14t can install pandas normally.

Installed Versions

Replace this line with the output of pd.show_versions()

[mroeschke]

Thanks for the report. It appears you're trying to downloading pandas from the index https://pypi.tuna.tsinghua.edu.cn/simple which is not managed by the development team. A pandas-2.3.3-cp314-cp314-win_amd64.whl is availble on pypi.org, https://pypi.org/project/pandas/2.3.3/#files.

You'll want to contact the administrator of the index you're trying to download from so closing this issue

[jorisvandenbossche]

Actually, I think the issue is that pandas 2.3 does not yet have Windows support for free-threading.

If you want to test with free-threaded python, you could install the nightly wheel, see https://pandas.pydata.org/docs/dev/getting_started/install.html#installing-the-development-version-of-pandas

[mroeschke]

Oops, yes I missed the t in the wheel I referenced for 2.3.3.