将文件中各个学生的成绩加总并写入

list1 = ["罗恩 23 35 44", \
         "哈利 60 77 68 88 90", \
         "赫敏 97 99 89 91 95 90", \
         "马尔福 100 85 90"]

with open("xxx", "w", encoding="utf-8") as xxx:
    for i in list1:
        xxx.writelines(i + "\n")

with open("xxx", "r", encoding="utf-8") as xxx:
    list2 = xxx.readlines()

for i in list2:
    data = i.split()
    s = 0
    for j in data[1:]:
        s = s + int(j)
    res = data[0] + ":"+str(s)
    with open("xxx", "a", encoding="utf-8") as xxx:
        xxx.writelines(res + "\n")
    print(res)