Windows 10下Permission denied [Errno13]权限问题求助

Hey there, let's break down this permission issue you're hitting on Windows 10.

First off, that Permission denied [Errno 13] error when you've already tried os.chmod(0o777) and os.chdir() makes total sense because Windows handles file permissions way differently than Unix-like systems. The os.chmod() function in Python doesn't fully translate to Windows' ACL (Access Control List) system—so setting 0o777 won't actually grant full read/write/execute permissions like it does on Linux or macOS.

Since you've narrowed it down to write permissions for a newly created folder, here are some actionable steps to fix this:

• Check the parent folder's permissions: Make sure the folder you're creating your new directory inside has write access for your user account. Right-click the parent folder → Properties → Security tab → Verify your username has "Write" permissions enabled.
• Run Python as Administrator: Sometimes, even if your user has permissions, running the script with elevated privileges can bypass permission blocks. Right-click your Python IDE or command prompt → "Run as administrator" and try executing the script again.
• Use absolute paths instead of relative paths: Sometimes switching directories with os.chdir() can lead to unexpected permission contexts. Try using full absolute paths when creating/writing to the new folder (e.g., C:\\Users\\YourName\\Documents\\NewFolder) instead of relying on the current working directory.
• Check for antivirus interference: Some antivirus programs can block Python from writing to certain directories. Temporarily disable your antivirus (carefully!) to see if that's the culprit.

Update: As you noted, this error is directly tied to write permissions for newly created folders, and os.chmod() doesn't work as expected on Windows. For anyone else facing the same issue, keep these key points in mind:

• Windows uses ACLs instead of Unix-style permissions, so os.chmod() has limited functionality here.
• Always verify the parent directory's permissions first, as that's often the root cause of write access issues for new folders.
• If you need to programmatically set permissions on Windows, consider using the win32api or win32security modules from the pywin32 library, which let you interact directly with Windows' ACL system.

内容的提问来源于stack exchange，提问作者Mr Pickel