An Imagehub code snippet for my PyCon 2020 presentation

imagehub.py

#imagehub.py snippet
#  (all the imports, logging setup hidden for now)
settings = Settings()  # get settings from YAML file
hub = ImageHub(settings)  # start ImageWriter, Timers, etc.
# forever event loop: receive & process images and text from imagenodes
while True:
    try:
        with Patience(hub.patience):
            text, image = hub.receive_next()
    except Patience.Timeout:  # if no timely message from any node
        hub.handle_timeout()
        continue
    reply = hub.process(text, image, settings)
    hub.send_reply(reply)