Monitoring a single file

问题:

I need to monitor (using watchdog) a single file, not a whole directory.

What is the best way to avoid monitoring a whole directory? I suppose this

class watchdog.events.PatternMatchingEventHandler(patterns=None, ignore_patterns=None, ignore_directories=False, case_sensitive=False)[source]

could be helpful, but how to define an appropriate pattern for my file (C:/dir1/dir2/file.txt)?

回答1:

If you want to watch a file path like C:/dict1/dict2/file.txt, I think that's your pattern right there. There are no wildcards in, so it should be usable as-is.

As an aside, if Watchdog is giving you trouble, you could also consider Pyinotify: https://github.com/seb-m/pyinotify

回答2:

The way to provide patterns for PatternMatchingEventHandler is

 from watchdog.events import PatternMatchingEventHandler

 class MyHandler(PatternMatchingEventHandler):
     patterns = ["*.xml", "*.log", "*/test.txt"] # */test.txt to watch that specifi file