[PyQt] QLineEdit vs. menu keyboard shortcuts

[Nathan Weston]

QLineEdit has some keyboard shortcuts (e.g. Ctrl+Z for Undo) that clash 
with the shortcuts for QActions in my application menus. When a 
QLineEdit has keyboard focus, it intercepts these shortcuts and my 
QActions are never triggered.

I'd like to give application-level shortcuts precedence over QLineEdit's 
shortcuts, but I can't seem to find a clean and general way to do this.

Alternatively, is there a way to customize the keyboard shortcuts in 
QLineEdit? If I could disable some of the problematic shortcuts that 
would be a reasonable workaround.

- Nathan