Watchdog - Python File Monitoring Events

Python API and shell utilities to monitor file system events
Supports 3.4+
Linux 2.6 (inotify)
Mac OS X (FSEvents, kqueue)
FreeBSD/BSD (kqueue)
Windows (ReadDirectoryChangesW with I/O completion ports; ReadDirectoryChangesW worker threads)
OS-independent (polling the disk for directory snapshots and comparing them periodically; slow and not recommended)
pip install watchdog
🎥 Watchdog - How to monitor multiple folders and log the process information in Python? (Part2)
• Monitor multiple folde...
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[@ark5458]

Nice video , always wanted to feel like a hacker after playing the game

[@rishikasinha7795]

Like you are automatically moving a file from one folder to the other. I need to move batches of files parallelly using thread model from one folder to another. How to do that?

[@brettharter143]

How would you go about using an IF statement on an event triggering?

[@CarmeloCarrillo]

Great video, thanks. How can I install it as a service?

[@brok3334]

Thanks a lot for this video!! But what is the 10 sec timer exactly for?

[@IamPython]

Thanks for your comment. I think you are referring to Python community sessions which was held In 20/21 year.

[@electricz3045]

You told, how to list modified dictonarys in a textoutput and how to automatic copy files from one to another dictonary with watschdog. However what i want to use it for is that it detect if a file is renamed and if so it should rename it instantly back.

[@RajKumarSingh-xt1pq]

To copy from one location to another, use copyfile() from shutil. And to answer your second question, whenever a file or folder is created in the path you are monitoring, the "on_created" function is called by watchdog. You can perform your desired task there.
Happy coding!

[@beautyofnature1507]

how i can Monitoring all files in the system ?

[@afghanhound7914]

How can I modify the script so that my files get renamed and incremented before it lands in the destination folder?

[@IamPython]

You need a script to rename file before placing into destination folder ? Help me much more to understand your question please ?

[@sagargulati639]

Hi , we have large no. of files coming to a folder like 5000 files a second, and this data is streaming... And out of 3000 files watchdog is recognising only 1000 file events, could you please suggest any the solution to this...

[@IamPython]

If you have a high volume of files coming into a folder and you're experiencing issues with file event recognition using Watchdog, there are a few potential solutions you can consider: 1) Increase System Resources like CPU, Memory etc 2)Optimize Watchdog Configuration - Adjust settings such as event detection delay, recursive flag, and watch flags based on your specific requirements. 3) Use Multiple Watchdog Instances: 4) Implement Throttling or Rate Limiting: If the rate of incoming files is overwhelming the system or causing missed events, you can implement throttling or rate limiting mechanisms to control the flow of incoming files. This can help ensure a more manageable workload for Watchdog.

[@martineschle9149]

Hi, thanks for the video, it helped me a lot!
However, as soon as I start the script, I cannot move files in the observed folder anymore! My mac then suddenly requires a password and finally fails with the file copy, that I try to do manually. What could be the problem?
I run the script on a synology NAS and in the filemove-Function I have an additional function to change the filename and select different destination folders based on the filename. I am somewhat desperate...
Best
Martin

[@IamPython]

Thanks for watching the video. Let me check your problem and get back yo you!

[@brunocaseiro124]

Do you know if there is a way to log what is the process name that is making a change to certain file or folder? For example, let's say you create a new .txt file using explore.exe, is there a way to detect that process xyz is the one which actually created, modified or deleted any file that is being monitored? I know psutil for instance can give us the list of running process, but how to combine files being modified with process owner seems to be very complicated thing to do in python if possible at all. thanks.

[@IamPython]

will create video tutorial for your request and upload it very soon

[@rushikeshkorde2673]

@@IamPython Have you created the video

[@maxlimgj]

do u post the source code anywhere

[@rishikasinha7795]

how to trigger a function when watchdog monitors a file has been created. can we store the logging message in a variable? I need to implement continuous monitoring and multiprocessing of files for a project. Please give suggestions. Thanks:)

[@IamPython]

Yes, you can monitor batch wise as well.
check python external module name called schedule ( pip install schedule)
Regarding the monitor the files through threads and process, i have already created one video for an idea to further implementation.
Video title (given link in description as well) :
Watchdog - How to monitor multiple folders and log the process information in Python? (Part2)
Let me know if you still have questions.

[@rishikasinha7795]

@@IamPython In my case there will be only one folder. batches of files will be pushed in the same folder in a sequential manner but they should start moving parallely to another folder. files in batch1 and batch 2 should be moving to another folder parallelly. can you make a video on that?

[@RajKumarSingh-xt1pq]

When a file or directory is newly created in the path which is being monitored, the function "on_created" is called by watchdog. You can either perform your task here or can call the function that accomplishes the task you want.
Happy coding!

[@madhankannan8022]

I will rent a server. Some people will upload some files to their allocated folders (I'm thinking of using sftp), and at the moment the file transfer is done, I want to move it to my folder in the server. I can detect if there is a new file or not with watch, but when the transfer starts, the file appears there and my script moves it immediately, so before the file transfer is done. How can I prevent this? How can I write a script that understands the transfer is done?

[@christiankoch4627]

You can simply check with the os module if the files datasize is still increasing

[@bhargavi2373]

Can we monitor multiple folders? Please reply by tagging me

[@IamPython]

@Bhargavi yes we can monitor multiple folders using watchdog. Will post video in shortly with explaination

[@RajKumarSingh-xt1pq]

Sure you can. Just use the multiprocessing module as below. You can modify this code as per your requirement.
import multiprocessing
def monitor_folder(folder):
observer.schedule(EventHandler, folder_to_track, recursive=True)
observer.start()
try:
while True:
time.sleep(3)
except KeyboardInterrupt:
Observer().stop()
finally:
Observer().join()
if __name__ == '__main__':
m1 = multiprocessing.Process(target=monitor_folder, args=(folder1,))
m2 = multiprocessing.Process(target=monitor_folder, args=(folder2,))
m1.start()
m2.start()