computer_parts = ["computer",
                  "monitor",
                  "keyboard",
                  "mouse",
                  "mouse pad"]

# for part in computer_parts:
#     print(part)

print(computer_parts)
print(computer_parts[3:])

computer_parts[3:] = ["trackball"]
print(computer_parts)
#
# print(computer_parts[0:3])
# print(computer_parts[-1])



