The Django tutorial shows how to create a virtualenv. Attempting to replicate for Flask and Python3.4 isn't working.
$ source virtualenvwrapper.sh
succeeds
$ mkvirtualenv --python=python3.4 venv
fails, with the message The executable /home/me/python3.4 (from --python=/home/me/python3.4) does not exist
This problem was discussed in thread 1251. The PA answer was "You need to specify the full path to the python executable."
Any suggestions on what that might be?