Python利用watchdog模块监控文件变化

pip install watchdog

import sys
import time
import logging
from watchdog.observers import Observer
from watchdog.events import LoggingEventHandler

if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO,
                        format='%(asctime)s - %(message)s',
                        datefmt='%Y-%m-%d %H:%M:%S')
    path = sys.argv[1] if len(sys.argv) > 1 else '.'

    # 生成事件处理器对象
    event_handler = LoggingEventHandler()

    # 生成监控器对象
    observer = Observer()
    # 注册事件处理器，配置监控目录
    observer.schedule(event_handler, path, recursive=True)
    # 监控器启动——创建线程
    observer.start()

    # 以下代码是为了保持主线程运行
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()

    # 主线程任务结束之后，进入阻塞状态，一直等待其他的子线程执行结束之后，主线程再终止
    observer.join()

python obserber.py /data/home/ckend/

class LoggingEventHandler(FileSystemEventHandler):
    """Logs all the events captured."""
​
    # ...省略其他源代码...
​
    def on_created(self, event):
        super(LoggingEventHandler, self).on_created(event)
​
        what = 'directory' if event.is_directory else 'file'
        logging.info("Created %s: %s", what, event.src_path)

# Python实用宝典
# 2019/12/29

import sys
import time
import logging
from watchdog.observers import Observer
from watchdog.events import LoggingEventHandler
from pychorus import find_and_output_chorus


class extractor(LoggingEventHandler):

    def on_created(self, event):
        super(LoggingEventHandler, self).on_created(event)
        what = 'directory' if event.is_directory else 'file'
        logging.info("Created %s: %s", what, event.src_path)
        NameExt = event.src_path.split('.')
        if NameExt[-1] == 'mp3':
            logging.info("mp3文件, 提取音乐高潮中...")
            output_path = "."+"".join(NameExt[:-1])+'_high.wav'
            find_and_output_chorus(event.src_path, output_path, 30)


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO,
                        format='%(asctime)s - %(message)s',
                        datefmt='%Y-%m-%d %H:%M:%S')
    path = sys.argv[1] if len(sys.argv) > 1 else '.'

    # 生成事件处理器对象
    event_handler = extractor()

    # 生成监控器对象
    observer = Observer()
    # 注册事件处理器
    observer.schedule(event_handler, path, recursive=True)
    # 监控器启动——创建线程
    observer.start()

    # 以下代码是为了保持主线程运行
    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()

    # 主线程任务结束之后，进入阻塞状态，一直等待其他的子线程执行结束之后，主线程再终止
    observer.join()