有人能从下面的索引错误中发现明显的错误吗?我创建了一个简单的操作,它从.txt文件中获取数据并以特定格式打印信息。这并不复杂,但我得到了一个索引错误,我不知道为什么索引存在;
city_info = open("mean_temp.txt", "a+")
city_info.write("Rio de Janeiro,Brazil,30.0,18.0\n")
city_info.seek(0,0)
headings = city_info.readline().split(",")
print("heading index 0:", headings[0],"\n","heading index 1:",
headings[1],"\n","heading index 2:", headings[2],"\n","heading index 3:",
headings[3])
while city_info:
city_temp = city_info.readline().split(",")
print(headings[0], "of", city_temp[0], "is", city_temp[2], "Celcius")
city_info.close()
我的指数值如下:
-
标题索引0:城市
-
标题索引1:国家
-
航向指数2:月平均:最高
-
航向指数3:月平均值:最低低点
这是我当前的输出(看起来是正确的(忽略数字),但我只需要消除索引错误。
-
北京市是摄氏30.9度
-
开罗市是34.7摄氏度
-
伦敦城是23.5摄氏度
-
内罗毕市为26.3 Celcius
-
纽约市是28.9摄氏度
-
悉尼市是26.5摄氏度
-
东京是30.8摄氏度
-
里约热内卢市是30.0摄氏度
这是我的错误:indexerror
Traceback (most recent call last)
<ipython-input-5-fb9cc0942cef> in <module>()
20 while city_info:
21 city_temp = city_info.readline().split(",")
---> 22 print(headings[0], "of", city_temp[0], "is", city_temp[2], "Celcius")
23
24
IndexError: list index out of range
如果我运行.txt文件存储位置的url,但找不到任何空行:
<p> city,country,month ave: highest high,month ave: lowest low
<p>Beijing,China,30.9,-8.4
<p>Cairo,Egypt,34.7,1.2
<p>London,UK,23.5,2.1
<p>Nairobi,Kenya,26.3,10.5
<p>New York City,USA,28.9,-2.8
<p>Sydney,Australia,26.5,8.7
<p>Tokyo,Japan,30.8,0.9
<p>
<p>