python - ReadDirectoryChangesW 阻止删除监视的目录

Question

我正在尝试使用 ReadDirectoryChangesW API 使用 python 在 Windows 上查看目录以创建/删除/重命名更改。这是我的代码，它运行良好:

results = win32file.ReadDirectoryChangesW(self.hDir, 8192, True, self.type, None,
                                           None)
for action, file in results:
    full_filename = os.path.join (self.source_path, file)
    if   action == 1:                                    # Created
        self.fileCreated(full_filename)
    elif action == 2:                                    # Deleted
        self.fileDeleted(full_filename)
    elif action == 3:                                    # Updated
        self.fileUpdated(full_filename)
    elif action == 4:                                    # Renamed from something
        renamed_file = full_filename
    elif action == 5:                                    # Renamed to something
        self.fileRenamed(renamed_file, full_filename)

但是，当我尝试从 python 或 Windows 资源管理器中删除监视的文件夹时，我得到:

WindowsError: [Error 32] 该进程无法访问该文件，因为它正被另一个进程使用:'c:\users\user\appdata\local\temp\new_dir'

我相信这是有道理的，但我应该如何解决这个问题？因为我的应用程序应该允许用户删除监视的文件夹。我尝试了异步方法的解决方案 http://www.themacaque.com/?p=859 , 但它没有帮助。

提前致谢!

Answer 1

来自 this blog post :

Another potential pitfall of [ReadDirectoryChangesW] is that the referenced directory itself is now "in use" and so can't be deleted. To monitor files in a directory and still allow the directory to be deleted, you would have to monitor the parent directory and its children.

该帖子还提供了有关正确使用 ReadDirectoryChangesW 的更多详细信息