human
Complete the below
def lru_cache(maxsize=100, typed=False):

    ''''Least-recently-used cache decorator.
    If *maxsize* is set to None, the LRU features are disabled and the cache
    can grow without bound.
    If *typed* is True, arguments of different types will be cached separately.
    For example, f(3.0) and f(3) will be treated as distinct calls with
    distinct results.
    Arguments to the cached function must be hashable.
    View the cache statistics named tuple (hits, misses, maxsize, currsize) with
    f.cache_info().  Clear the cache and statistics with f.cache_clear().
    Access the underlying function with f.__wrapped__.
    See:  http://en.wikipedia.org/wiki/Cache_algorithms#Least_Recently_Used'
    '''
assistant
#Here is the Python program you requested.
    def decorating_function(user_function):
        cache = dict()
        stats = [0, 0]
        (HITS, MISSES) = (0, 1)
        make_key = _make_key
        cache_get = cache.get
        _len = len
        lock = RLock()
        root = []
        root[:] = [root, root, None, None]
        nonlocal_root = [root]
        (PREV, NEXT, KEY, RESULT) = (0, 1, 2, 3)
        if (maxsize == 0):
            def wrapper(*args, **kwds):
                result = user_function(*args, **kwds)
                stats[MISSES] += 1
                return result
        elif (maxsize is None):
            def wrapper(*args, **kwds):
                key = make_key(args, kwds, typed)
                result = cache_get(key, root)
                if (result is not root):
                    stats[HITS] += 1
                    return result
                result = user_function(*args, **kwds)
                cache[key] = result
                stats[MISSES] += 1
                return result
        else:
            def wrapper(*args, **kwds):
                try:
                    key = (make_key(args, kwds, typed) if (kwds or typed) else args)
                except TypeError:
                    stats[MISSES] += 1
                    return user_function(*args, **kwds)
                with lock:
                    link = cache_get(key)
                    if (link is not None):
                        (root,) = nonlocal_root
                        (link_prev, link_next, key, result) = link
                        link_prev[NEXT] = link_next
                        link_next[PREV] = link_prev
                        last = root[PREV]
                        last[NEXT] = root[PREV] = link
                        link[PREV] = last
                        link[NEXT] = root
                        stats[HITS] += 1
                        return result
                result = user_function(*args, **kwds)
                with lock:
                    (root,) = nonlocal_root
                    if (key in cache):
               ...