Newbie: How do I run a script from IDLE (Win98)

[David Stewart]

I can import and run my “Hello World” module/function in the immediate
window but if I then edit and save the source file I can not see how to
run the modified code without closing and restarting the shell.

If I try and do it all from the IDLE edit window both import module (f5)
and run script (ctrl+f5) open a shell with the cursor in the line below
the prompt and then nothing!  Ctrl+f5 in the shell gives me the message
“The buffer for Python Shell is not saved 
.”

What am I missing?

Thanks

Dave Stewart