Parking senzor

import serial
import RPi.GPIO as GPIO


ser = serial.Serial('/dev/ttyUSB0')
ser.flushInput
GPIO.setwarnings(False)

ledPins = [11, 12, 13, 15, 16, 18, 19, 21, 22, 23]
def setup():
        print("Program is starting")
        GPIO.setmode(GPIO.BOARD) #physical location
        for pin in ledPins:
                GPIO.setup(pin, GPIO.OUT) #mode output
                GPIO.output(pin, GPIO.HIGH) #off led

def destroy():
        for pin in ledPins:
                GPIO.output(pin, GPIO.HIGH)
                GPIO.cleanup()

if __name__ == '__main__':
        dict = {"5":"9", "10":"8", "15":"7", "20":"6", "25":"5", "30":"4", "35":"3", "40":"2", "50":"1", "60":"0" }
        dict = {int(k):int(i) for k, i in dict.items()}
        list = dict.keys()
        list.sort()
        numarLeduri = 0
        flag = 0

        setup()
        try:
                while True:
                        ser_bytes = ser.readline()
                        decoded_bytes = float(ser_bytes[0:len(ser_bytes)-2].decode("utf-8"))
                        dist = decoded_bytes    

                        ##
                        lungime = len(list)
                        for i in range(lungime - 1):
                                if dist >= list[i] and dist < list[i+1]:
                                        numarLeduri = dict[list[i]]
                                        continue
                                if dist >= 60:
                                        numarLeduri = 0

                        for pin in ledPins[:numarLeduri]:
                                GPIO.output(pin, GPIO.LOW)
                        for pin in ledPins[numarLeduri+1:]:
                                GPIO.output(pin, GPIO.HIGH)
                        ##
                        if dist<=10:
                                flag = flag + 1
                                if flag == 6:
                                        import smtplib
                                        server=smtplib.SMTP('smtp.gmail.com',587)

                                        server.starttls()

                                        server.login("gmail","pass")
                                        msg="Alerta senzor, distana este " + str(dist)                                               
    
                server.sendmail("emiraspberrypi0@gmail.com",
"nailimebale@yahoo.com",msg)
                                        server.quit()
                        ##
                        print("distanta este {}, iar noi ar trebui sa aprindem primele {} becuri".format(dist, numarLeduri))
        except KeyboardInterrupt:
                #destroy()
                print("exit")