Improved Python version display for PyEnv

README.md

List available PyEnv versions

Usage: /Users/igor/Applications/bin/pyver [options] [filter]

Filters: -M: Display only the latest Major versions (default) -m: Display only the latest Minor versions -p: Display all versions -i: Display installed versions

Options: -r: Raw output (no color) -h: Displays this message

Example

Show only the latest version for each Major version available:

$ pyver -M
3.7.3 (installed)
2.7.16

Show only the latest version for each Minor version available:

$ pyver -m
3.7.3 (installed)
3.6.8
3.5.7
3.4.10
3.3.7
3.2.6
3.1.5
3.0.1
2.7.16
2.6.9
2.5.6
2.4.6
2.3.7
2.2.3
2.1.3

pyver.sh

#!/usr/bin/env bash

function available_versions() {
  pyenv install -l | awk '{ print $1 }' | egrep "^\d+\.\d+\.\d+$" | tail -r
}

function installed_versions() {
  pyenv versions | awk '{ print $1 }' | egrep "^\d+\.\d+\.\d+$" | tail -r
}

function filter_versions() {
  case $1 in
    M) available_versions | sort -u -t. -k1,1       | tail -r  ;;
    m) available_versions | sort -u -t. -k1,1 -k2,2 | tail -r  ;;
    *) available_versions                                      ;;
  esac
}

function contains() {
  [[ "$1" =~ (^|[[:space:]])$2($|[[:space:]]) ]] && return 0 || return 1
}

function b() {
  if [ "$RAW" != "yes" ]; then
    echo "$(tput bold)${1}$(tput sgr0)"
  else
    echo "$1"
  fi
}

function show_versions() {
  inst_vers="$(installed_versions | paste -sd '|' -)"

  for i in $(echo -e "$1"); do
    if $(contains $i $inst_vers); then
	  #echo "${bold}$i (installed)${normal}"
	  b "$i (installed)"
	else
	  echo "$i"
    fi
  done
}

function help() {
  if [[ $# -gt 1 ]]; then
    echo "Unknown parameter '$2'"
  else
    echo "List available PyEnv versions:"
  fi

  echo "  Usage: $0 [options] [filter]"
  echo
  b    "  Filters:"
  echo "    -M: Display only the latest Major versions (default)"
  echo "    -m: Display only the latest Minor versions"
  echo "    -p: Display all versions"
  echo "    -i: Display installed versions"
  echo
  b    "  Options:"
  echo "    -r: Raw output (no color)"
  echo "    -h: Displays this message"
  echo
  exit $1
}

FILTER="M"
RAW=""
ACTION="available"
EXIT=0
MSG=""

while [[ $# -gt 0 ]]; do
  case $1 in
    -M) FILTER="M"                ;;
    -m) FILTER="m"                ;;
    -p) FILTER="p"                ;;
	-r) RAW="yes"                 ;;
    -i) ACTION="installed"        ;;
    -h) ACTION="help"             ;;
    *)  ACTION="error" ; MSG="$1" ;;
  esac
  shift
done

case $ACTION in
  available) show_versions "$(filter_versions $FILTER)" ;;
  installed) installed_versions                         ;;
  help)      help 0                                     ;;
  error)     help 1 "$MSG"                              ;;
esac