类型错误：对象没有该属性

Question

我正在做一个程序，这个程序可以从一个探头获取温度，然后把这个温度放到一个谷歌表格里。我修改了一些我找到的代码，但遇到了一个我不知道怎么处理的错误。

下面是代码：

#!/usr/bin/python3

import os
import glob
import time
import gspread
import sys
import datetime


#Google account details
email = 'email@google.com'
password = 'password'
spreadsheet = 'spreadsheet' #the name of the spreadsheet already created

#attempt to log in to your google account
try:
    gc = gspread.login(email,password)
except:
    print('fail')
    sys.exit()

#open the spreadsheet
worksheet = gc.open(spreadsheet).sheet1

#initiate the temperature sensor
os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')

#set up the location of the sensor in the system
base_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(base_dir + '28*')[0]
device_file = device_folder + '/w1_slave'


def read_temp_raw(): #a function that grabs the raw temperature data from the $
    f_1 = open(device_file, 'r')
    lines_1 = f_1.readlines()
    f_1.close()
    return lines_1

def read_temp(): #a function that checks that the connection was good and stri$
    lines = read_temp_raw()
    while lines[0].strip()[-3:] != 'YES':
        time.sleep(0.2)
        lines = read_temp_raw()
    equals_pos = lines[1].find('t=')
    temp = float(lines[1][equals_pos[0]+2:])/1000
    return temp

while True: #infinite loop
    temp = read_temp() #get the temp
    values = [datetime.datetime.now(), temp[0], temp[1]]
    worksheet.append_row(values) #write to the spreadsheet
    time.sleep(600) #wait 10 minutes

我遇到的错误是：

Traceback (most recent call last):
  File "temp.py", line 52, in <module>
    temp = read_temp() #get the temp
  File "temp.py", line 48, in read_temp
    temp = float(lines[1][equals_pos[0]+2:])/1000
TypeError: 'int' object has no attribute '__getitem__'

我觉得我可能漏掉了什么明显的东西，但我不知道是什么。任何帮助都会很感激。我对这些还比较陌生。

Answer 1

equals_pos 是一个整数（这是 str.find 返回的结果），所以 equals_pos[0]+2 这样写是不合理的。你可以用 equals_pos+2 来代替。