from functools import wraps

    def defaults(**default_kwargs):  # Decorator factory
        def decorator(func):  # Decorator function
            @wraps(func)
            def wrapper(*args, **kwargs):  # Actual wrapper

                # Iterate over all default keyword arguments
                for name in default_kwargs.keys():
                    # And if not specified in the passed in kwargs use the default
                    kwargs[name] = kwargs.get(name, default_kwargs[name]())

                # Call the actual function
                return func(*args, **kwargs)
            return wrapper
        return decorator
    
    # Note that the default argument value should be a callable to avoid the pitfall with mutable arguments
    @defaults(bar=lambda: [1, 2, 3])
    def foo(bar):
        print(bar)

    foo()