list = [1,2,3,4,5]

list.reverse()

print(list)
[5, 4, 3, 2, 1]
list  = [9, 8, 4, 3, 5, 2,6,7, 1,0]
list.sort()
print(list)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]