问题描述
当尝试使用"open(fname，'w +')"打开新文件时，出现如下所示的IOError.完整的错误消息如下.
I get an IOError shown below when trying to open a new file using "open (fname, 'w+')". The complete error message is below.
该文件不存在，但是我使用"os.access(dir_name，os.W_OK)"和"os.path.exists(dir_name)"验证了该文件的父目录确实存在.
The file does not exist, but I verified using "os.access(dir_name, os.W_OK)" and "os.path.exists (dir_name)" that the parent directory for the file does exist.
我想知道文件名对于Windows是否太长，或者我做错了什么.任何提示将不胜感激.非常感谢.
I am wondering if the file name is just too long for Windows, or if I am doing something wrong. Any tips would be appreciated. Thank you very much.
错误消息:
推荐答案
在Windows API中，最大路径长度限制为260个字符.
In the Windows API the maximum path length is limited to 260 characters.
http://msdn.microsoft. com/en-us/library/aa365247％28v = vs.85％29.aspx
更新:在路径前面加上"\\?\".
Update: prepend "\\?\" to the path.
这篇关于创建长文件时，Python IOError异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！