Python • Python v3 Errors

Code:

#!/usr/bin/env python#green/data0 is pin 8#white/data1 is pin 10import timeimport RPi.GPIO as GPIOD0 = 8D1 = 10bits = ''t = 15timeout = tled_buzzer = 18door_strike = 16GPIO.setmode(GPIO.BOARD)GPIO.setup(D0, GPIO.IN, pull_up_down=GPIO.PUD_UP)GPIO.setup(D1,GPIO.IN, pull_up_down=GPIO.PUD_UP)GPIO.setup(led_buzzer, GPIO.OUT)GPIO.setup(door_strike, GPIO.OUT)def set_procname(newname):    from ctypes import cdll, byref, create_string_buffer    libc = cdll.LoadLibrary('libc.so.6')    #Loading a 3rd party library C    buff = create_string_buffer(len(newname)+1) #Note: One larger than the name (man prctl says that)    buff.value = newname                 #Null terminated string as it should be    libc.prctl(15, byref(buff), 0, 0, 0) #Refer to "#define" of "/usr/include/linux/prctl.h" for the misterious value 16 & arg[3..5] are zero as the man page says.    def one(channel):    global bits    global timeout    bits = bits + '1'    timeout = t    def zero(channel):    global bits    global timeout    bits = bits + '0'    timeout = tdef main():    set_procname("Wiegand Reader")    global bits    global timeout    GPIO.add_event_detect(D0, GPIO.FALLING, callback=zero)    GPIO.add_event_detect(D1, GPIO.FALLING, callback=one)    while 1:        if bits:            timeout = timeout -1            time.sleep(0.001)            if len(bits) > 1 and timeout == 0:                print ("Binary:",bits)                result = int(str(bits),2)                result = int(bits[1:25],2)                                print("number", result)                if result == 2923229214: # the number of my test badge                    bits = ''                    print (result)                else:                    bits = ''                    timeout = t                    print ("Bad Read")                    print (result)                else:            time.sleep(0.001)if __name__ == '__main__':    main()