Script to build python as a user without root access

build_python.sh

#!/bin/bash
# Script to install Python from source code as an unprivileged user.
# Update PYTHON_VERSION to the version you want to install.
# Update PYTHON_PREFIX to be where you want it installed.
# You can pass both of these as environment variables or just hardcode them.
# You can paste this whole file into your terminal as-is and go.

PYTHON_VERSION=${PYTHON_VERSION:-3.11.0}
PYTHON_PREFIX=${PYTHON_PREFIX:-${HOME}/python-${PYTHON_VERSION}}

(
    set -e
    check_installed(){ for prog in "$@"; do which ${prog} >/dev/null || (echo "You must install ${prog}" && exit 1); done; }

    check_installed wget tar gcc make

    wget --continue https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz

    tar xfv Python-${PYTHON_VERSION}.tgz
    cd Python-${PYTHON_VERSION}
    ./configure --prefix=${PYTHON_PREFIX} --enable-optimizations --with-lto --with-computed-gotos --with-system-ffi
    make -j "$(nproc)"
    make altinstall
)