Assigning to global variables from within a function
Irmen de Jong
irmen at -NOSPAM-REMOVETHIS-xs4all.nl
Sat Jul 12 22:42:06 CEST 2003
> I want to do this:
> int= 0
> def change_int():
> int += 1
> but of course it doesn't work, Python thinks it is a local
> variable and refuses to reference the global one. So what would
> be a good way of doing this. Note that creating a new global
> variable from within the function isn't convenient because the
> function is intended to be used in loops.
A function that modifies a global is generally considered bad
design (it has 'side-effects').
But if you really need to do this, just add a 'global' statement:
PS don't use 'int' for a name of your own, it is a builtin in Python.
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