Very important for running Python on Windows. How do you setup
Windows so that you can execute Python scripts like regular binaries?
Note that Windows needs the Python .py extensions to be sticking
around for this to work. No extensionless executables, sorry.
20160624/http://stackoverflow.com/questions/9037346/making-python-scripts-run-on-windows-without-specifying-py-extension
assoc .py=Python.File
ftype Python.File=c:\Python27\python.exe "%1" %*
assoc .py=Python.File
ftype Python.File="C:\Program Files\Python35\python.exe" "%1" %*