root/
  setup.py
  README.rst
  MANIFEST.in
  bin/
    runmymath.py
    runmymath.bat
  mymath/
    __init__.py
    calc.py
examples/package/3/bin/runmymath.py
import mymath

def main():
    print("running")

main()
examples/package/3/bin/runmymath.bat
echo "hi"

setup.py will need to get

    scripts=['bin/runmymath.py', 'bin/runmymath.bat'],