1 def doubleHashing(data, hashTableSize, doubleHashSize): 2     if len(data) > hashTableSize: 3         return None 4     listOfHashTable = [None] * hashTableSize 5     for i in range(len(data)): 6         primaryHash = data[i] % hashTableSize 7         doubleHash = primaryHash 8         if listOfHashTable[primaryHash] is None: 9             listOfHashTable[primaryHash] = data[i]10         else:11             while listOfHashTable[doubleHash] is not None:12                 secondary = doubleHashSize - (data[i] % doubleHashSize)13                 doubleHash = (doubleHash + secondary) % hashTableSize14             listOfHashTable[doubleHash] = data[i]15     return listOfHashTable