modifing function's parameters global value

[Terry Reedy]

"Federico" <maschio_77 at hotmail.com> wrote in message
news:b9qqeo$qbq$1 at lacerta.tiscalinet.it...
> How can I modify the global value of function's parameters

A function's parameters are the names appearing within the ()s in the
def statement line: def funcname(param1, param2, <etcetera>).  They
are, be definition, local variables.  The arguments of a function call
are the actual objects/values passed to the function and bound to the
parameter names.  With that understanding, perhaps you can rephrase
your question, if you still have one.

Terry J. Reedy