On Jul 15, 10:13 am, Nick Dumas <[EMAIL PROTECTED]> wrote: > The function of the global keyword is to 'push' local variables to the > global scope. If you want to 'import' a variable into a local scope, > pass the variable to your function/method as an argument. > Anonymous Bastard wrote: > > I've been tossing this idea in my mind for some time now: > > > In Python, declaring a variable using the global statement automatically > > makes it available in all subsequent scopes. > > > But to me, it makes more sense to use the global statement to 'import' a > > variable from the global scope into the current scope. For instance: > > > [code] > > global X > > X = 1 > > > def P(): > > X = 2 > > print X > > global X > > print X > > > print X > > P() > > print X > > [code] > > > Currently, this will print 1, 2, 2 and 2. But if global would be limited > > to current scope, it would print 1, 2, 1, 1. > > > 'X = 2' would work on the local version of X, 'global X' will 'import' > > the global X into the local scope, so any actions on X would reference > > the global X, rather than previous X. > Alternatively, inside the function, you can have _X = X and use _X afterwards. This is a lot more explicit imo. Giving a different meaning to "global" like the one you suggest would make it extremely difficult to mimic its current behaviour - whereas what you want to do can be done with a simple change assignment (or passing an argument to the function).
Ask yourself: given change Y that I propose to Python, how would I still be able to do Z which is the current behaviour and is found to be useful by others? André -- http://mail.python.org/mailman/listinfo/python-list
