python headers are missing in /usr/include/python3.6m "yum" code example

Example: python.h missing

# `Python.h` is provided by the "python-dev" or "python3-dev" packages on debian/Ubuntu.
# On some sytems it will be "python-devel", "python2-devel" and/or "python3-devel"
sudo apt-get install python-dev python3-dev