Python watchdog获取被监视文件的已修改行

import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler

class MyEventHandler(FileSystemEventHandler):
    def on_modified(self, event):
        if not event.is_directory:
            file_path = event.src_path
            with open(file_path, 'r') as file:
                modified_lines = file.readlines()
                # 处理已修改的行
                for line in modified_lines:
                    # 进行相应的操作
                    print(line)

event_handler = MyEventHandler()
observer = Observer()
observer.schedule(event_handler, path='目标文件夹路径', recursive=False)

observer.start()

try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    observer.stop()

observer.join()