global variables and local functions.

[Erik Max Francis]

Inyeol Lee wrote:

> 'global' keyword is not required when appending something to a global
> list
> in local scope, since there's no assignment with list.append(). For
> example,

Right, it's only required when names are being rebound, not merely when
objects are being changed.  The style that I generally adhere to is
using a global statement whenever I'm referencing (whether rebinding or
not) a global variable.  Since I tend not to use globals all that much
anyway, it helps set them off better.  It also means you don't have to
consider the precise rule when the global statement is needed; if you
use it wherever globals are involved the details of the rule are
unimportant.

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