Slow or no response from read pickle file
<p>I'm working on a project that contain a webserver that handle "time" and "traffic light" parameter and save it to a pickle file and another script load the pickle and use it for mqtt client</p>

<pre><code>import pickle
import paho.mqtt.client as mqtt
from datetime import datetime, date, time
from threading import Timer
date=datetime.now()
print date
try:
    while True:
        fp = open("shared.pkl", 'rb')
        shared = pickle.load(fp)
        if date &lt; shared["now"] :
            time= shared["time"]
            light = shared["light"]
            date = shared["now"]
            fp.close()
            time= int(time)
            def pub (s):
                client.publish("traffic/light1", payload = s ,qos=0, retain=False)
            t= Timer(time , pub,[light])
            t.start()
            print time
            print light
            print date




        client = mqtt.Client()


        client.connect("localhost", 1883, 60)

# Blocking call that processes network traffic, dispatches callbacks and
# handles reconnecting.
# Other loop*() functions are available that give a threaded interface and a
# manual interface.

        client.loop(timeout=1.0, max_packets=1)

except (EOFError, UnpicklingError):
    pass
</code></pre>

<p>it works good but sometimes it doesn't publish or doesn't read the pkl file!!
any suggestions?</p>