A script to simplify the creation of new pyenv-virtualenv environments.

newproject.sh

#!/bin/sh

# This script automates most the dirty work in configuring new Python virtual
# environments. It requires that you've installed pyenv and pyenv-virtualenv.

display_usage() {
  echo "\nThis script creates and activates pyenv-virtualenv environments."
  echo "It requires that you have pyenv and pyenv-virtualenv installed."
  echo "\nUsage: $0 <project_name> <python_version>\n"
  echo "Example: $0 new_project 3.8.2\n"
}

command_exists() {
  command -v "$1" >/dev/null 2>&1
  if [ $? != 0 ]
  then
    echo "\nAborting Operations!"
    echo "\nThis script requires but could not find $1."
    echo "Please verify that $1 is installed and on your path.\n"
    exit 1
  fi
}

if [ $# == 0 ]
then
  display_usage
  exit 1
fi

command_exists pyenv
command_exists pyenv-virtualenv

# We need these for pyenv activate to work!
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

# Ok, let's do the thing!
mkdir $1 && cd $1   # Create project directory
pyenv local $2   # Create localized python install within that directory
pyenv virtualenv venv-$1 # Create virtual environment from project directory
pyenv local venv-$1 && pyenv activate venv-$1   # Activate venv and set local Python