在Windows 7中打开长路径时python.exe崩溃

Question

Python crashed when I did following steps:

os.makedirs(ur'\\?\c:\测试文件夹')
open(ur'\\?\c:\测试文件夹\t.txt','w')

You can see full path here: http://psf.upfronthosting.co.za/roundup/meta/issue629%3E

Answer 1

Windows has a path length limit (which includes everything after the drive letter) of 256 characters; the issue appears to be that your path exceeds that limit. If you try to create that path manually via Windows Explorer, I think you'll find the path cannot be created there as well.

From MSDN docs ( link ):

In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters. A local path is structured in the following order: drive letter, colon, backslash, name components separated by backslashes, and a terminating null character. For example, the maximum path on drive D is "D:\\some 256-character path string" where "" represents the invisible terminating null character for the current system codepage. (The characters < > are used here for visual clarity and cannot be part of a valid path string.)

Answer 2

thanks for all. it's maybe macfee injected into the python.exe process. see: https://bugs.python.org/issue30494