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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def deprecated(func, msg=None):
 """ A decorator which can be used to mark functions as deprecated.It will result in a deprecation warning being shown when the function is used. """


    message = msg or "Use of deprecated function '{}`.".format(func.__name__)

    @functools.wraps(func)
    def wrapper_func(*args, **kwargs):
        warnings.warn(message, DeprecationWarning, stacklevel=2)
        return func(*args, **kwargs)

    return wrapper_func