python - 语句 : with and tarfile

Question

我尝试使用 with 语句和 tarfile 模块...

with tarfile.open('/dir/dir/dir.tar.gz', 'w:gz') as fl:
    fl.add('/dir/dir/dir/', arcname = '/')

所以它显示下一个:

Traceback (most recent call last):File "", line 1, inAttributeError: 'TarFile' object has no attribute '__exit__'

我尝试创建 tar.gz 文件并使用语句关闭它，但它显示错误。有什么问题？

谢谢!

Answer 1

您可以使用 contextlib.closing ，例如:

from contextlib import closing
with closing(tarfile.open('/dir/dir/dir.tar.gz', 'w:gz')) as fl:
    fl.add('/dir/dir/dir/', arcname = '/')

来自文档:

Even if an error occurs, page.close() will be called when the with block is exited.

contextlib.closing 自 Python 2.5(或什至更早...)以来可用。