def remove(self, key):
        '''
        Remove the key from the index.
        '''
        if self.keys not in key:
            raise ValueError("The given key does not exist")
        for H, hashtable in zip(self.keys[key], self.hashtables):
            hashtable[H].remove(key)
            if len(hashtable[H]) == 0:
                hashtable.pop(H)
        self.keys.pop(key)
dataset/ETHPy150Open ekzhu/datasketch/datasketch/lsh.py/MinHashLSH.remove/swapped operands of `not in`