Developer Notes in Python - Lists and Len

list1 = [floor, car, fence, door, wall, chair, table, tv, rug, roof] #objects
list2 = [basic, useful, useful, useful, basic, basic, useful, basic, basic] #their use
list3 = [easy, hard, easy, easy, easy, easy, easy, easy, hard, easy] #complexity
print(list1) #list1
print(len(list1)) #how many objects in list one
print(list2) #list2
print(list3) #list3