python_single_target options

jython2_7
Build for Jython 2.7 only
pypy
Build for PyPy only
pypy3
Build for PyPy3 only
python2_7
Build for Python 2.7 only
python3_5
Build for Python 3.5 only
python3_6
Build for Python 3.6 only
python3_7
Build for Python 3.7 only