<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def dict_copy(func):
    "copy dict keyword args, to avoid modifying caller's copy"
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        copied_kwargs = copy.deepcopy(kwargs)
        return func(*args, **copied_kwargs)
    return wrapper