The project needs a LICENSE file and GPL3 is most suitable, given that the Python files already contain the following comment.
# Copyright (C) 2016-2017 Paul Leopardi paul.leopardi@gmail.com
#
# Distributed under the terms of the GNU General Public License (GPL)
# as published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
# http://www.gnu.org/licenses/
The project needs a LICENSE file and GPL3 is most suitable, given that the Python files already contain the following comment.