符合条件的代码怎样编写？

def isSorted(lst):
    order = lst[0] - lst[1]
    for i in range(1,len(lst)-1):
        if (lst[i] - lst[i+1])*order<0:
            return False
    return True

lst = list(map(int,input().split(',')))
if isSorted(lst):
    print('The list is already sorted')
else:
    print('The list is not sorted')