* the innermost scope, which is searched first, contains the local names

* the scopes of any enclosing functions, which are searched starting with the

* the next-to-last scope contains the current module's global names

* the outermost scope (searched last) is the namespace containing built-in names

If a name is declared global, then all references and assignments go directly to

found outside of the innermost scope, the :keyword:`nonlocal` statement can be

used; if not declared nonlocal, those variables are read-only (an attempt to

write to such a variable will simply create a *new* local variable in the