bash auto virtualenv

# Add the following to your ~/.bashrc making sure to set $WORKON_HOME variable
function cd() {
  builtin cd "$1"
  absolute_path=$(readlink -m "$1")
  base_path=$(basename "$absolute_path")
  if [ -z "$VIRTUAL_ENV" ]
  then
    if [ -d "$WORKON_HOME/$base_path" ]
    then
      echo "Activating $base_path virtualenv"
      # Control will enter here if $DIRECTORY exists.
      source "$WORKON_HOME/$base_path/bin/activate"
    fi

  fi
}