Making Python scripts run on Windows without specifying ".py" extension
Add .PY to PATHEXT as noted before
Then do:
assoc .py=Python.Fileftype Python.File=c:\Python27\python.exe "%1" %*Adding python to the path isn't necessary to execute the script in a command prompt or double clicking in Explorer, only if you want to start an interactive python session or running the script with python yourscript.py
See http://docs.python.org/2/using/windows.html for more details.
Modify the PATHEXT variable to include Python scripts. For example, here's mine:
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC;.PYYou can do this every time you open a command console, or just modify your user global environment variables so that every instance of cmd.exe will include it.