decors.py

def decorator(arg1, arg2):
    def real_decorator(function):
        def wrapper(*args, **kwargs):
            print("Congratulations.  You decorated a "
                  "function that does something with %s and %s" % (arg1, arg2))
            for obj in args: # это список
                print('hello: {}'.format(obj))
            for key, value in kwargs.items(): # это словарь
                print('key={}, value={}'.format(key, value))
            function(*args, **kwargs)
        return wrapper

    return real_decorator


@decorator("Param1", "Param2")
def print_args(*args, **kwargs):
    for arg in args:
        print(arg)


print_args(1, 2, 3, a=1, b=2, c=2)