无法让看门狗观察者 stop/join (python)

Question

我正在使用 watchdog python 包来检测文件是否已下载（我在 selenium 中这样做）。这是我正在使用的代码，它成功检测到文件创建，但我对 self.observer.stop() 的调用似乎不起作用，程序停滞了。有什么想法吗？

class MyEventHandler(FileSystemEventHandler):
    def __init__(self, observer):
        self.observer = observer
    def on_created(self, event):
        print "file created"
        self.observer.stop()

def check_download(download_folder):
    file_location = download_folder
    print(download_folder)
    observer = Observer()
    event_handler = MyEventHandler(observer)
    observer.schedule(event_handler, file_location)
    observer.start()
    observer.join()
    return 0

Answer 1

已修复：

class MyEventHandler(FileSystemEventHandler):
    def __init__(self, observer):
        self.observer = observer

    def on_created(self, event):
        if not event.src_path.endswith(".pdf"):
            global check
            check = 1  # signal download complete


def initiate_download(PDF, download_folder):
    file_location = download_folder
    global check
    check = 0
    observer = Observer()
    event_handler = MyEventHandler(observer)
    observer.schedule(event_handler, file_location)
    observer.start()
    PDF.click()
    while check == 0:
        time.sleep(1)  # wait for download signal
    observer.stop()
    observer.join()
    return 0

可能不是一个“合适的”解决方案，但它似乎可以解决问题。

无法让看门狗观察者 stop/join (python)

Trouble getting Watchdog observer to stop/join (python)

python

selenium

download

watchdog