[pypanta]

Try with this tutorial: https://pypanta.github.io/how-to-install-python-from-source-...

I also using Debian 11, and this is how I always install Python from source:

    wget https://www.python.org/ftp/python/3.11.0/Python-3.11.0b3.tgz

    tar xvzf Python-3.11.0b3.tgz
    cd Python-3.11.0b3.tgz

    sudo apt install libssl-dev zlib1g-dev libbz2-dev liblzma-dev libffi-dev tcl-dev libgdbm-dev libsqlite3-dev libreadline-dev tk tk-dev libmpdec-dev

    ./configure --enable-loadable-sqlite-extensions --enable-shared --with-lto --enable-optimizations --with-system-expat --with-system-ffi --with-computed-gotos --with-system-libmpdec --enable-ipv6 CC=x86_64-linux-gnu-gcc

    make
    sudo make altinstall

[TekMol]

After that, I have a command "python 3.11" but when I try to run it, I get this:

python3.11: error while loading shared libraries: libpython3.11.so.1.0: cannot open shared object file: No such file or directory