[已解决]写读取成绩的代码，但是为啥读出来的TXT不对呢

xiaoxiaosen

def read_file():
    result = []
    with open("students.txt", encoding="UTF-8") as fin:
        for line in fin:
            line = line[:-1]
            result.append(line.split(","))
    return result


def sort_grades(datas):
    return sorted(datas,
                  key=lambda x : int(x[2]),
                  reverse=True)


def write_files(datas):
    with open("students_output.txt", "w", encoding="UTF-8") as fout:
        for data in datas:
            fout.write(",". join(data) + "\n")


datas = read_file()
print("read_file datas:", datas)

datas = sort_grades(datas)
print("sort_grades datas:", datas)

write_files(datas)
print("write_files datas:", datas)










C:\Users\Administrator\AppData\Local\Programs\Python\Python39\python.exe C:\Users\Administrator\Desktop\CODE\lianxi2.py
read_file datas: [['101', '小张', '88'], ['102', '小赵', '99'], ['103', '小孙', '55'], ['104', '小李', '77'], ['105', '小王','6']]
sort_grades datas: [['102', '小赵', '99'], ['101', '小张', '88'], ['104', '小李', '77'], ['103', '小孙', '55'], ['105', '小王', '6']]
write_files datas: [['102', '小赵', '99'], ['101', '小张', '88'], ['104', '小李', '77'], ['103', '小孙', '55'], ['105', '小王', '6']]

Process finished with exit code 0

最佳答案

月排行榜 / 总排行榜

isdkz

2023-3-6 18:14:46

最后一行没有换行就没有换行符，所以 line = line[:-1] 把最后一个字符去掉了

你可以把 line = line[:-1] 替换成 line = line.rstrip()

def read_file():
    result = []
    with open("students.txt", encoding="UTF-8") as fin:
        for line in fin:
            line = line.rstrip()                                       # 改了这行
            result.append(line.split(","))
    return result


def sort_grades(datas):
    return sorted(datas,
                  key=lambda x : int(x[2]),
                  reverse=True)


def write_files(datas):
    with open("students_output.txt", "w", encoding="UTF-8") as fout:
        for data in datas:
            fout.write(",". join(data) + "\n")


datas = read_file()
print("read_file datas:", datas)

datas = sort_grades(datas)
print("sort_grades datas:", datas)

write_files(datas)
print("write_files datas:", datas)

跳转到最佳答案楼层

xiaoxiaosen

最后一个数据读出就是不对的，66的数据读出是6

isdkz

最后一行没有换行就没有换行符，所以 line = line[:-1] 把最后一个字符去掉了

你可以把 line = line[:-1] 替换成 line = line.rstrip()

def read_file():
    result = []
    with open("students.txt", encoding="UTF-8") as fin:
        for line in fin:
            line = line.rstrip()                                       # 改了这行
            result.append(line.split(","))
    return result


def sort_grades(datas):
    return sorted(datas,
                  key=lambda x : int(x[2]),
                  reverse=True)


def write_files(datas):
    with open("students_output.txt", "w", encoding="UTF-8") as fout:
        for data in datas:
            fout.write(",". join(data) + "\n")


datas = read_file()
print("read_file datas:", datas)

datas = sort_grades(datas)
print("sort_grades datas:", datas)

write_files(datas)
print("write_files datas:", datas)

xiaoxiaosen

isdkz 发表于 2023-3-6 18:14
最后一行没有换行就没有换行符，所以 line = line[:-1] 把最后一个字符去掉了

你可以把 line = line[:-1 ...

谢谢