A dive into the syntax

Passing parameters

The syntax is a little bit different if we wish to pass parameters to a decorator:

def with_params(...):
    def __decor(func):
        ...

    return __decor

The decorator will first take its parameters, and then make another call to the decorated function.

@with_params(0)
def my_func():
    pass

is the equivalent of

my_func = with_params(0)(my_func)