Use of statement 'global' in scripts.

[Greg Ewing]

On 8/05/24 1:32 pm, Popov, Dmitry Yu wrote:
> The statement 'global', indicating variables living in the global scope, is very suitable to be used in modules. I'm wondering whether in scripts, running at the top-level invocation of the interpreter, statement 'global' is used exactly the same way as in modules?

The 'global' statement declares a name to be module-level, so there's no
reason to use it at the top level of either a script or a module, since
everything there is module-level anyway.

You only need it if you want to assign to a module-level name from
within a function, e.g.

spam = 17

def f():
   global spam
   spam = 42

f()
# spam is now 42

A script is a module, so everything that applies to modules also
applies to scripts.

-- 
Greg