Chord DHT查找key的负责节点

def solve(____):
    import hashlib
    nodes = nodes.split(____) if isinstance(____) else nodes
    key_hash = int(hashlib.sha1(key.encode()).hexdigest(), ____) % (____ ** ____)
    node_ids = sorted([int(hashlib.sha1(n.encode()).hexdigest(), ____) % (____ ** ____) for n in nodes])
    for nid in node_ids:
        if nid >= key_hash:
            print(____)
            return
    print(____)