Python • Port switching on/off

Code:

import time # The time library is useful for delaysimport RPi.GPIO as gpioimport subprocessimport paho.mqtt.client as mqttfrom datetime import datetime#***********************************batSOC = "solar_assistant/total/battery_state_of_charge/state"#vlist = []topiclist = []#globalprint_debug = TruebatSOCv = 0batSOCo = 0#***********************        def gpioSetup():    gpio.setwarnings(False) #to disable warnings.    #set pin numbering toBroadcom scheme    gpio.setmode(gpio.BCM)    #set GPIO6 as an output pin    gpio.setup(6, gpio.OUT)   #signal to relay trigger    gpio.output(6, gpio.LOW)  # relay off  #**************def mqtt_sendTopic(topicsub):       attempts = 0    while attempts < 5:        try:            ourClient = mqtt.Client("makc_mqtt")            ourClient.connect("192.168.10.156")            ourClient.on_message = messageFunction_topic            ourClient.loop_start()             ourClient.subscribe(topicsub)            time.sleep(6)            ourClient.loop_stop()             break        except ConnectionError:            time.sleep(10)            attempts += 1                        if print_debug:                print("ConnectionError")           def messageFunction_topic (client, userdata, message):    topic = str(message.topic)    message = str(message.payload.decode("utf-8"))    topiclist.append(message)    #*******************def batSOC_value():    topicsub = batSOC    mqtt_sendTopic(topicsub)    vlist = []    vlist = topiclist    batSOCvLen = len(vlist)    batSOCv = 0    for value in vlist:        batSOCv = batSOCv + float(value)        topiclist.clear()    try:        batSOCv = batSOCv/batSOCvLen    except ZeroDivisionError:        if print_debug:            print("ZeroDivisionError:")        pass    return batSOCv      #battery state of charge value#******************* def check_internet_connection():    try:       subprocess.check_output(["ping", "-c", "1", "192.168.10.156"])       return True    except subprocess.CalledProcessError:       if print_debug:           print("Internet is not connected.")       return False      #*******************def main():    gpioSetup()    while True:        if check_internet_connection():            batSOCo = batSOC_value()      #get battery state of charge            if print_debug:                dtime = time.strftime("%d/%m/%Y-%H:%M:%S")                print(dtime)                print("Internet is connected.")                print('Battery state of charge = ', batSOCo)            batSOCo = 8            if batSOCo <= 10:                gpio.output(6, gpio.HIGH) # turn Grid ON                if print_debug:                    dtime = time.strftime("%d/%m/%Y-%H:%M:%S")                    print(dtime)                                print("Grid ON Soc", batSOCo)            else:                gpio.output(6, gpio.LOW) # turn Grid OFF                if print_debug:                    dtime = time.strftime("%d/%m/%Y-%H:%M:%S")                    print(dtime)                                print("Grid off SOC = ", batSOCo)        else:               gpio.output(6, gpio.LOW)            if print_debug:                dtime = time.strftime("%d/%m/%Y-%H:%M:%S")                print(dtime)                print("Internet NOT connected")                print("Grid Control not available")main()