将路径过长的文件复制到 Python 中的另一个目录

问题描述

我正在尝试使用 Python 2.7 在 Windows 上复制文件，但有时会失败.

I am trying to copy files on Windows with Python 2.7, but sometimes this fails.

shutil.copyfile(copy_file, dest_file)

我收到以下 IOError:

I get the following IOError:

[Errno 2] No such file or directory

但是文件确实存在！问题是文件的路径太长.(> 255 个字符)

But the file does exist! The problem is that the path of the file is too long. (> 255 characters)

如何复制这些文件?在其他应用程序中打开它们不是问题.

How do I copy these files? It isn't a problem to open them in other applications.

要创建路径过长的文件，请创建一个文件名尽可能长的文件，并将包含的文件夹移到树结构的更深处.

To create a file with a too long path, create a file with an as long as possible file name and move the containing folder deeper down a tree structure.

我一直在尝试其中一些方法但没有成功:http://timgolden.me.uk/python/win32_how_do_i/copy-a-file.html

I've been trying some of these methods without success: http://timgolden.me.uk/python/win32_how_do_i/copy-a-file.html

推荐答案

我不确定 255 字符的限制，所以我偶然发现了 这篇文章.在那里我找到了一个可行的答案:在路径之前添加 \?.

I wasn't sure about the 255 char limit so I stumbled on this post. There I found a working answer: adding \? before the path.

shutil.copyfile("\\?\" + copy_file, dest_file)

我发现使用长路径会导致 Windows 出现问题.我使用的另一个技巧是缩短路径:

edit: I've found that working with long paths causes issues on Windows. Another trick I use is to just shorten the paths:

import win32api
path = win32api.GetShortPathName(path)

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