Is there anyway I can change a shortcut key that an application has under one of it's menus in Ubuntu. For example I'm running
PyCrust and want it to clear the window when I press Ctrl
Setting the gconf key
Hard to say how you might accomplish that.
PyShell is a shell - a character-based application - so it runs in a terminal emulator. You don't say which terminal emulator you're using. It might be possible to get the Ctrl-L behavior from the terminal emulator itself rather than from PyShell.
Note that's not how bash and tcsh implement ^L handling - they handle it themselves internally.
So I guess I'm saying you'd have to start hacking on pyshell itself to implement this, and that there's no "end user" way to hook that up.