Assuming you have the UltraEdit program installed and open on your computer, double-click the "Python" script file that you want to run. UltraEdit should open the script in its own window. As long as you remain within this window, you can execute the Python script by typing its text at the UltraEdit console (usually found in Window's lower-left corner). If you want to save your work and close UltraEdit, right-click (Control+click on a Mac)...