since we'll be taking look at quite bit of experimental data in this textwe have written tkinter program that will read an xml file with the format given in sect and plot the sequences to the screen the plotdata py program is given in chap if we use the program to plot the data gathered by the list access experimentwe see graph like the one in fig this graph provides the experimental data to back up the two statements we made earlier about lists in python the red line shows the average element access time of , element accesses on list of the given size the average access time (computed from sample of , random list accessesis no longer on list of , than it is on list of , while the exact values are not printed in the graphthe exact values are not important what we would be interested in seeing is any trend toward longer or shorter average access times clearly the only trend is that the size of the list does not affect the average access time there are some ups and downs in the experimental databut this is caused by the system being fig access times in python list this copy belongs to 'acha