Introducing Python / Chapter 12 dump with decorator

dump.py

def dump(func):
    "Return arguments and outputs"
    def wrapped(*args, **kwargs):
        print("Function name: %s" % func.__name__)
        print("Input arguments: %s" % ' '.join(map(str, args)))
        print("Input keyword arguments: %s" % kwargs.items())
        output = func(*args, **kwargs)
        print("Output:", output)
        return output
    return wrapped

dump_test.py

from dump import dump

@dump
def double(*args, **kwargs):
    "Double every argument"
    output_list = [2 * arg for arg in args]
    output_dict = { k:2*v for k, v in kwargs.items()}
    return output_list, output_dict

if __name__ == '__main__':
    output = double(3,5, first=100, next=98.6, last=-40)