Python按字母顺序写入.txt

需要帮助不能按字母顺序写入文件

class_name = "class 1.txt"    #adds '.txt' to the end of the file so it can be used to create a file under the name a user specifies
with open(class_name , 'r+') as file:
    name = (name)
    file.write(str(name + " : " )) #writes the information to the file
    file.write(str(score))
    file.write('\n')
    lineList = file.readlines()
    for line in sorted(lineList):
        print(line.rstrip())

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您需要调用

file.seek

来相应地设置读/写位置

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有关说明，请参阅。

您应该用新的（按字母顺序排列的）数据覆盖该文件。这比尝试跟踪

file.seek

调用（以字节为单位，而不是以行甚至字符为单位）要简单得多，而且性能也不会明显降低

with open(class_name, "r") as f:
    lines = f.readlines()

lines.append("{name} : {score}\n".format(name=name, score=score))

with open(class_name, "w") as f:  # re-opening as "w" will blank the file
    for line in sorted(lines):
        f.write(line)

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名字和分数是多少？