Installing virtualenvwrapper

install the virtualenv wrapper according to the following instructions:
http://virtualenvwrapper.readthedocs.io/en/latest/install.html

add instructions to .bashrc to add virtualenvwrapper when a shell is opened:

# ------------------ start workon stuff -------------------
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/projetcs
source $(which virtualenvwrapper.sh)

take care that the last lines which virtualenvwrapper.sh produces a result. It could be, that virtualenvwrapper.sh was installed to a different directory that is not in the path in which case it could not be found by the whihc command.

important:

make sure, that afther opening a new shell the following two conditions are met:

  • no message after opening the shell like:
    /usr/local/bin/virtualenvwrapper.sh not found
  • the command:
    which virtualenvwrapper.sh produces a valid result