def insert(self , item):
index = hash_function(self.length , item)
print index
if self.my_hash_table[index] == None:
singly_obj = Singly()
self.my_hash_table[index] = singly_obj.insert_head(item)
elif self.my_hash_table[index] != None:
self.my_hash_table[index].insert_head(item)
