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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 log_start_end(f):
 """ Decorator to log start and end of function Use of decorator module here ensures that argspec will inspect wrapped function, not the decorator itself. http://micheles.googlecode.com/hg/decorator/documentation.html """

    def inner(f, *args, **kwargs):
        logging.info('Starting %s' % f.__name__)
        res = f(*args, **kwargs)
        logging.info('Finished %s' % f.__name__)
        return res
    return decorator.decorator(inner, f)