Mostly rewritten. Instead of the old Run module and Debug module,

Mostly rewritten.  Instead of the old Run module and Debug module,
there are two new commands:

Import module (F5) imports or reloads the module and also adds its
name to the __main__ namespace.  This gets executed in the PyShell
window under control of its debug settings.

Run script (Control-F5) is similar but executes the contents of the
file directly in the __main__ namespace.