of courseknowing what we do about pointerswe realize that this is not entirely true the string is not really stored in the nodebut is rather pointer to the actual stringthus the storage requirement for this simple node is two memory addresses the data attribute of the nodes are pointers to the strings eggs and ham finding endpoints we have created three nodesone containing eggsone hamand another spam the eggs node points to the ham nodewhich in turn points to the spam node but what does the spam node point tosince this is the last element in the listwe need to make sure its next member has value that makes this clear if we make the last element point to nothing then we make this fact clear in pythonwe will use the special value none to denote nothingthe last node has its next point pointing to none as such it is the last node in the chain of nodes