python decorator wrapper function

test.py

def wrapper(v:int = 0):
    def f2(f):
        def f2_v(*args, **kwargs):
            return f(*args, **kwargs) + v
        return f2_v
    return f2


@wrapper(v=4)
def foo(x:int):
    return 3+x

@wrapper(v=4)
def foo2(x:int, y: int):
    return 3+x*y

print(foo(1))
print(foo2(1,6))