Question

The objective is to watch a folder for change. And if there is new subfolder created inside that watch-folder then - get the new subfolders path and get contents in it.

I have heard about libraries like watchdog and firstnotication. But I am not able to write code in python for Windows Os. Any Help is appreciated.

Pseudo-code is like this,

Watchfolder="C:/watchfolder"
if newFolderCreated inside WatchFolder:
  print snewsubfolder created name #eg:- C:/watchfolder/newfolder
  cd into newsubfolder
  get .mp4 filepath #eg:- C:/watchfolder/newfolder/hello.mp4

Answer 1

下面的代码是使用win32.file包装器API和Windows OS中可用的FindFirstChangeNotification API完成的。以下代码的所有文档可在以下位置找到： http://timgolden.me.uk/pywin32-docs/win32file.html 您可以有更简单的方法来执行此操作，但这是最有效的方法。所有信息都可以在 http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html

import os

import win32file
import win32con

ACTIONS = {
    1: "Created",
    2: "Deleted",
    3: "Updated",
    4: "Renamed from something",
    5: "Renamed to something"
}
FILE_LIST_DIRECTORY = 0x0001

path_to_watch = "C:/yourpath"
hDir = win32file.CreateFile(
    path_to_watch,
    FILE_LIST_DIRECTORY,
    win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE | win32con.FILE_SHARE_DELETE,
    None,
    win32con.OPEN_EXISTING,
    win32con.FILE_FLAG_BACKUP_SEMANTICS,
    None
)
while 1:
   #Right now only directory check is being used and everything else like filecheck is commented
    results = win32file.ReadDirectoryChangesW(
        hDir,
        1024,
        True,
        # win32con.FILE_NOTIFY_CHANGE_FILE_NAME |
        win32con.FILE_NOTIFY_CHANGE_DIR_NAME ,
        # win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES |
        # win32con.FILE_NOTIFY_CHANGE_SIZE |
        # win32con.FILE_NOTIFY_CHANGE_LAST_WRITE |
        # win32con.FILE_NOTIFY_CHANGE_SECURITY,
        None,
        None
    )
    for action, file in results:
        full_filename = os.path.join(path_to_watch, file)
        print(full_filename,ACTIONS.get(action, "Unknown"))

您将在full_filename中获得完整路径，并在Actions.get（操作，“未知”）中获得操作。现在监视它的更新，删除和创建。您可以使用if在代码顶部或底部的操作中进行排序。之后，您可以使用glob库获取并打印.mp4路径

import glob
print(glob.glob(full_filename,"/*.mp4"))

这将返回目录中所有.mp4文件路径的数组

Watch new folders created in a directory outputting the path of new files

1 个答案: