python中使用RegexMatchingEventHandler的文件扩展名匹配

import os
import re
from watchdog.observers import Observer
from watchdog.events import RegexMatchingEventHandler

class FileEventHandler(RegexMatchingEventHandler):
    def __init__(self, patterns):
        super().__init__(patterns=patterns)

    def on_created(self, event):
        if event.is_directory:
            return
        print(f"Created: {event.src_path}")

    def on_modified(self, event):
        if event.is_directory:
            return
        print(f"Modified: {event.src_path}")

    def on_deleted(self, event):
        if event.is_directory:
            return
        print(f"Deleted: {event.src_path}")

if __name__ == "__main__":
    # 定义要匹配的文件扩展名
    patterns = [re.compile(r".*\.txt")]
    
    # 监视指定目录下的文件变化
    path = "/path/to/directory"
    event_handler = FileEventHandler(patterns)
    observer = Observer()
    observer.schedule(event_handler, path, recursive=True)
    observer.start()
    
    try:
        while True:
            pass
    except KeyboardInterrupt:
        observer.stop()
    observer.join()