dat = [1, 2, 3, 4, 5]
print(dat[1:])    # [2, 3, 4, 5]
print(dat[:-1])   # [1, 2, 3, 4]
print(dat[1::2])  # [2, 4]
print(dat[::-1])  # [5, 4, 3, 2, 1]