Temp from USB Temper to MQTT

usbtemper_mqtt.py

#!/usr/bin/python3
# EASY-INSTALL-ENTRY-SCRIPT: 'temperusb==1.5.3','console_scripts','temper-poll'
__requires__ = 'temperusb==1.5.3'
from temperusb.temper import TemperHandler
from paho.mqtt.publish import single as mqtt_single

def getTempReading():
    th = TemperHandler()
    devs = th.get_devices()
    readings = []
    output = ''

    for dev in devs:
        sensors = [0] # range(dev.get_sensor_count())
        temperatures = dev.get_temperatures(sensors=sensors)
        humidities = dev.get_humidity(sensors=sensors)
        combinations = {}
        for k, v in temperatures.items():
            c = v.copy()
            try:
                c.update(humidities[k])
            except:
                pass
            combinations[k] = c
        readings.append(combinations)

    for i, reading in enumerate(readings):
        dict_key = 'temperature_c'

        for sensor in sorted(reading):
            output += '%0.1f; ' % reading[sensor][dict_key]
        output = output[0:len(output) - 2]

    return output

t = getTempReading()

mqtt_single(topic=TOPIC, payload=t, qos=0, retain=False, hostname=HOST,
    port=PORT, client_id="CLIENT", keepalive=60, will=None, auth=AUTH, tls=None,
    protocol=4)