Install Python using pyenv

We will use pyenv to install latest Python version 3.12 You can check which versions are available with:

pyenv install --list #this will output all the versions available

pyenv install --list | grep 3.12

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To actually install Python 3.12, run:

pyenv install 3.12.0

Once the installation is complete, you can set project specific Python version with:

pyenv local 3.12.0

Try to run python --version and you should see the following output:

Python 3.12.0

This command creates a .python-version file in your current directory. If you have pyenv active in your environment, this file will automatically activate this version for you.

Maximum Performance

By default, pyenv does not enable profile-guided optimization (PGO) and link-time optimization (LTO) when building the interpreter. If you want to get the maximum performance out of your Python code, you should enable the --enable-optimizations flag. This will result in a faster interpreter at the cost of significantly longer build times.

See more detail info here