可以使用 list-comprehension 为了它

List = ['qwe'+i[1:] if i.startswith('F') else i for i in List]

试试这个

def unique_elements(a):
    newlist = []
    for i in a:
        if i not in newlist:
            newlist.append(i)
    return newlist


xyz = [1,1,2,4,6,2,2,4,5]

print(unique_elements(xyz))

输出:

[1, 2, 4, 6, 5]