Ensure python version is compatible before building wheels

[Ciao-Wen-Chen]

Hi I got the following error message after running instruction from page

./install_requirements.sh --pybind

build_meta.py", line 311, in run_setup
exec(code, locals())
File "", line 549, in
TypeError: 'type' object is not subscriptable
Preparing wheel metadata ... error

[mergennachin]

@Ciao-Wen-Chen Looks like you're using python 3.8

ExecuTorch runs on python 3.10 and above.

@dbort - once actionable thing is to update our setup page (https://pytorch.org/executorch/main/getting-started-setup.html) to include supported python versions more upfront on the top as opposed to part of the conda creation step.

[dbort]

Updating the docs makes sense; I thought we already mentioned it, but we don't.

We should also update install_requirements.sh and maybe setup.py to explicitly check for a compatible python version.

[Ciao-Wen-Chen]

yeah, I pointed to the wrong Python version. Get the build successfully, thank you for the reply!

[dbort]

#4131 will explicitly check for the right python version when running install_requirements.sh or building the wheel, so it should be more obvious when the version isn't supported.

[dbort]

Merged in f32d707