Python Install

README.md

Install Python

This script is designed to make it easy to install multiple versions of Python onto a Linux system. The resulting versions are stored side-by-side in /opt/Python/

Instructions

1. Copy the bash script to install-python,sh
2. Make the script executable: sudo chmod +x install-python.sh
3. Run the script for each desired python version, e.g. sudo ./install-python.sh 3.8.3

Details

This script uses miniconda to install pre-compiled Python binares. Once installed, conda is no longer required. See detailed documenetation at https://docs.rstudio.com/resources/install-python

install-python.sh

#!/usr/bin/env bash

# Copyright (C) 2020 by RStudio, PBC.

set -o errexit
set -o nounset
set -o pipefail

main() {
  python_version="${1:-}"

  if [[ ! "${python_version}" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
    cat << EOF
Usage: $(basename "$0") <python-version>
EOF
    exit 1
  fi

  if [[ ! -d /opt/Python/miniconda ]]; then
    echo "Downloading miniconda..."

    curl -fsSL -o /opt/rstudio-connect/scripts/miniconda.sh https://repo.anaconda.com/miniconda/Miniconda3-4.7.12.1-Linux-x86_64.sh
    chmod 755 /opt/rstudio-connect/scripts/miniconda.sh

    echo "Installing miniconda..."
    /opt/rstudio-connect/scripts/miniconda.sh -b -p /opt/Python/miniconda
  fi

  if [[ ! -f /opt/Python/"${python_version}"/bin/python ]]; then
    echo "Installing Python ${python_version}..."

    /opt/Python/miniconda/bin/conda create --quiet --yes \
      --prefix /opt/Python/"${python_version}" \
      --channel conda-forge \
      python="${python_version}" virtualenv notebook nbconvert bjoern

    if [[ "${python_version}" =~ ^3 ]]; then
      /opt/Python/"${python_version}"/bin/pip install --upgrade \
        pip setuptools wheel
    fi
  fi

  echo "Finished installing Python ${python_version}"
}

main "${@}"