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How do I track Python files for changes?

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Monitoring files for changes in any language is difficult due to cross-platform issues. There is a widely used cross platform library in python called watchdog that allows you to track changes. You can install it using:

 $ pip install watchdog 

Example

To view my_file.txt file using watchdog you can use a simple program:



 import time from watchdog.observers import Obs erver from watchdog.events import FileSystemEventHandler class MyHandler (FileSystemEventHandler): def on_modified (self, event): print (" Got it! ") event_handler = MyHandler () observer = Observer () observer .schedule (event_handler, path = ’.’, recursive = False) observer.start () try: while True: time.sleep (1) except KeyboardInterrupt: observer.stop () observer.join () 

When you run this program and make any changes to any file in the current directory, the on_modified function from the MyHandler class is called along with the event.



In the MyHandler class, you can define your own event handling functions. In the path, you can specify the files / directories that you want to track. To stop this program use Ctrl + C



How do I track Python files for changes? _files: Questions

How do I track Python files for changes? Python functions: Questions

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