Pyrebase的Raspberry Pi Python 3错误

Question

尝试将传感器值上传到Firebase时出现错误，但是有一些错误。

我的python 3是：

import RPi.GPIO as GPIO
import time
import pyrebase
import json

# change these as desired - they're the pins connected from the
# SPI port on the ADC to the Cobbler
SPICLK = 11
SPIMISO = 9
SPIMOSI = 10
SPICS = 8

# photoresistor connected to adc #0
photo_ch = 0

#port init
def init():
         GPIO.setwarnings(False)
         GPIO.cleanup()         #clean up at the end of your script
         GPIO.setmode(GPIO.BCM)     #to specify whilch pin numbering system
         # set up the SPI interface pins
         GPIO.setup(SPIMOSI, GPIO.OUT)
         GPIO.setup(SPIMISO, GPIO.IN)
         GPIO.setup(SPICLK, GPIO.OUT)
         GPIO.setup(SPICS, GPIO.OUT)

#read SPI data from MCP3008(or MCP3204) chip,8 possible adc's (0 thru 7)
def readadc(adcnum, clockpin, mosipin, misopin, cspin):
        if ((adcnum > 7) or (adcnum < 0)):
                return -1
        GPIO.output(cspin, True)    

        GPIO.output(clockpin, False)  # start clock low
        GPIO.output(cspin, False)     # bring CS low

        commandout = adcnum
        commandout |= 0x18  # start bit + single-ended bit
        commandout <<= 3    # we only need to send 5 bits here
        for i in range(5):
                if (commandout & 0x80):
                        GPIO.output(mosipin, True)
                else:
                        GPIO.output(mosipin, False)
                commandout <<= 1
                GPIO.output(clockpin, True)
                GPIO.output(clockpin, False)

        adcout = 0
        # read in one empty bit, one null bit and 10 ADC bits
        for i in range(12):
                GPIO.output(clockpin, True)
                GPIO.output(clockpin, False)
                adcout <<= 1
                if (GPIO.input(misopin)):
                        adcout |= 0x1

        GPIO.output(cspin, True)

        adcout >>= 1       # first bit is 'null' so drop it
        return adcout

def main():
         init()
         while True:
             adc_value=readadc(photo_ch, SPICLK, SPIMOSI, SPIMISO, SPICS)
             print(adc_value)
             return adc_value

             time.sleep(2)

   ##      time.sleep(2)
   ##      print("will start detec water level\n")
   ##      while True:
   ##               adc_value=readadc(photo_ch, SPICLK, SPIMOSI, SPIMISO, SPICS)
   ##               if adc_value == 0:
   ##                        print("no water\n")
   ##               elif adc_value>0 and adc_value<30 :
   ##                        print("it is raindrop\n")
    ##              elif adc_value>=30 and adc_value<200 :
    ##                       print("it is water flow")
    ##                       print("water level:"+str("%.1f"%(adc_value))+"%\n")
                  #print "adc_value= " +str(adc_value)+"\n"
    ##              time.sleep(1)

while True:

    config = {
      "apiKey": "AIzaSyD-4PQ_BsXn-g9KWf-iv-BbE5HeYYehYbE",
      "authDomain": "myapplication-8ca28.firebaseapp.com",
      "databaseURL": "https://myapplication-8ca28.firebaseio.com/",
      "storageBucket": "myapplication-8ca28.appspot.com"
    }
    firebase = pyrebase.initialize_app(config)
    db = firebase.database()
    postdata = {
        'Weight': int(main())
    }
    results = db.child("WeightR").child("Weight").update(postdata)

我的错误是：

我通过sudo pip install pyrebase安装，sudo pip3 install pyrebase和pip install pyrebase安装。最初安装它们时出现错误，但是使用sudo之后，有些条目会忽略但可以安装。