Another place where the decorator syntax is mentioned is the function definitions.
A function definition may be wrapped by one or more decorator expressions. Decorator expressions are evaluated when the function is defined, in the scope that contains the function definition. The result must be a callable, which is invoked with the function object as the only argument. The returned value is bound to the function name instead of the function object. Multiple decorators are applied in nested fashion. For example, the following code
@f1(arg) @f2 def func(): passis roughly equivalent to
def func(): pass func = f1(arg)(f2(func))except that the original function is not temporarily bound to the name
func.
Essentially it says the same as the glossary entry, and a decorator is considered part of the function definition.
Similar text can also be found in the class definitions.