因此,当我在目录中创建文件然后使用新文件开始幻灯片播放时,我试图创建一个正在运行的python应用程序。我理解并设法正确地创建和执行了Watchdog-Observer,但现在我不知道如何继续。
在一个模块(mediachecker.py)中,将观察者写入,在main.py模块中,mediachecker.py文件被执行。现在,我想继续,仅在创建文件时(因此当观察者检测到on_created事件时)启动我的slideshow.py模块。
我认为我不太了解观察者或看门狗的概念,也不知道如何处理结果事件。
我希望你们能帮助我!
mediachecker.py
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
path = '/Users/muser/Documents/directory'
class NewEventHandler(FileSystemEventHandler):
def on_created(self, event):
print('New files created')
class Checker(NewEventHandler):
def watch(self):
event_handler = NewEventHandler()
observer = Observer()
observer.schedule(event_handler, path, recursive=True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()
main.py
from mediachecker import Checker
def main():
checker = Checker()
checker.watch()
if __name__ == "__main__":
main()
slideshow.py当前为空,即将被写入
答案 0 :(得分:0)
所以我找到了解决方案。我必须通过构造函数传递回调。
mediachecker.py
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
path = '/Users/user/Documents/directory'
class NewEventHandler(FileSystemEventHandler):
def __init__(self, callback):
self.callback = callback
super().__init__()
def on_created(self, event):
print('New files created')
self.callback()
class Checker():
def watch(self, callback):
event_handler = NewEventHandler(callback)
observer = Observer()
observer.schedule(event_handler, path, recursive=True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()
main.py
from mediachecker import Checker
def callback():
print('callback')
def main():
checker = Checker()
checker.watch(callback)
if __name__ == "__main__":
main()