Creating a List of Empty Lists

[Andrew Koenig]

> Right - because if I do something like :
>
> a = 4
> b = a
> a = 5
> print b
>
> It prints 4... not 5.
> In other words - the line b = a creates a name pointing to the object
> 4, rather than a name pointing to the contents of a.....

There's no difference between "the object 4" and "the contents of a", so the
"rather than" makes no sense in this context.

After executing

    b = a

the names "a" and "b" refer to the same object.