AttributeError: exit while processing all files in directory

Question

我实际上是在尝试使用 python 脚本处理当前工作目录中的每个文件。尽管我尽了最大努力，但当我运行我的代码时，我仍然收到此错误：

File "script.py", line 9, in <module>
    with my_file as f:
AttributeError: __exit__

这是我的代码：

import os

for my_file in os.listdir(os.getcwd()):
    first = True;
    movie_id = 0;

    with my_file as f:
        for line in f:
            if first == False:
                sys.stdout.write(movie_id + "," + line);
            else:
                movie_id = line
                movie_id = movie_id[0:len(movie_id) - 2]
                first = False

有什么建议吗？谢谢！

Answer 1

您有两个多余的 close()，with: 套件会处理它。只是：

import os

for my_file in os.listdir(os.getcwd()):
    print file
    first = True;
    movie_id = 0;

    with open(my_file) as f:
    #    ^^^^^       ^
        for line in f:
            if first == False:
                sys.stdout.write(movie_id + "," + line);
            else:
                movie_id = line
                movie_id = movie_id[0:len(movie_id) - 2]
                first = False

以下 OP 编辑：

错误告诉您 f 没有 __exit__ 方法，因此不能用作上下文管理器。那是因为，正如 Steve Jessop 评论的那样，您忘记了 open()

AttributeError: __exit__ while processing all files in directory

AttributeError: __exit__ while processing all files in directory

python

io

file-handling

AttributeError: exit while processing all files in directory

AttributeError: exit while processing all files in directory