install-latest-python.sh

#!/bin/bash
# .pyenv/plugins/install-latest-python/bin/pyenv-install-latest
# Summary: Install the latest version of a python release
#
# Usage: pyenv install-latest [version]
#
# Description:
#   This command will pick the latest version as returned from pyenv version --list.
#   If an argument is provided, it will be used as a filter.
#
# Arguments:
#       version - the minor version to install. If not provided, will use the latest version
#
# Examples:
#   pyenv install-latest
#   pyenv install-latest 3.11
#   pyenv install-latest 2.7
#   pyenv install-latest anaconda3

set -e
[ -n "$PYENV_DEBUG" ] && set -x

if [ "$#" -gt 1 ]; then
        pyenv-help --usage pyenv-install >&2
        exit 1
fi

quote() {
        python -c 'import re;print(re.escape(input()))' <<< "$1"
}

pylatest() {
        pattern=$1
        if [ -z "$pattern" ]; then
                pattern='^\d+\.\d+\.\d+(?!b\d+)$'
        fi
        pyenv-install --list | xargs -n 1 | grep -P "$pattern" | sort -V | tail -n 1
}

pyresolve() {
        local quoted resolved
        quoted=$(quote "$1")
        resolved=$(pylatest "^${quoted}[.$-]")
        if [ -z "$resolved" ]; then
                echo "Could not resolve '$1' to a python version" >&2
                return 2
        fi
        echo "$resolved"
}

version=$1

if [ -z "$version" ]; then
        resolved=$(pylatest)
else
        resolved=$(pyresolve "$version")
fi

echo -n "Install python $resolved? (y/N) "
read -r choice
if [ "$choice" = "y" ]; then
        pyenv-install "$resolved"
fi