Question

是我的第一篇文章，对不起格式

问题：输出中有错误，数据输出正确，但循环超出范围，我不知道如何修复它。

代码：

exam_file=open('mean_text.txt', 'a+')
exam_file.write("Rio de Janeiro,Brazil,30.0,18.0\n")

exam_file.seek(0)
headings=exam_file.readline().split(",")

exam_file.seek(0,1)
city_temp=exam_file.readline().split(",")

while city_temp:
    print(headings[0].capitalize()+" of "+city_temp[0]+" "+ headings[2]+" is "+city_temp[2]+" Celsius")
    city_temp = exam_file.readline().split(",")

exam_file.close()

输出：

City of Beijing month ave: highest high is 30.9 Celsius
Traceback (most recent call last):
City of Cairo month ave: highest high is 34.7 Celsius
City of London month ave: highest high is 23.5 Celsius
  File "./Module4task.py", line 11, in <module>
City of Nairobi month ave: highest high is 26.3 Celsius
City of New York City month ave: highest high is 28.9 Celsius
    print(headings[0].capitalize()+" of "+city_temp[0]+" "+ headings[2]+" is "+city_temp[2]+" Celsius")
City of Sydney month ave: highest high is 26.5 Celsius
IndexError: list index out of range
City of Tokyo month ave: highest high is 30.8 Celsius
City of Rio de Janeiro month ave: highest high is 30.0 Celsius

.txt文件的内容：

city,country,month ave: highest high,month ave: lowest low
Beijing,China,30.9,-8.4
Cairo,Egypt,34.7,1.2
London,UK,23.5,2.1
Nairobi,Kenya,26.3,10.5
New York City,USA,28.9,-2.8
Sydney,Australia,26.5,8.7
Tokyo,Japan,30.8,0.9

期待：

City of Beijing month ave: highest high is 30.9 Celsius
City of Cairo month ave: highest high is 34.7 Celsius
City of London month ave: highest high is 23.5 Celsius
City of Nairobi month ave: highest high is 26.3 Celsius
City of New York City month ave: highest high is 28.9 Celsius
City of Sydney month ave: highest high is 26.5 Celsius
City of Tokyo month ave: highest high is 30.8 Celsius
City of Rio De Janeiro month ave: highest high is 30.0 Celsius

我的任务：

添加Rio的天气

以附加加模式打开文件（＆＃39; a +＆＃39;）
为里约热内卢和巴西里约热内卢写一个新的线路，30.0,18.0 \ n＆＃34; 抓住列标题
使用.seek（）将指针移动到文件的开头
将第一行文本读入名为：headings
使用.split（＆＃39;，＆＃39;）将标题转换为列表，每个逗号分割

使用while循环从文件中读取剩余的行

将剩余行分配给city_temp变量
使用.split（＆＃39;，＆＃39;）将city_temp转换为列表，用于循环中的每个.readline（）
打印每个城市＆amp;最高月平均气温
close mean_temps

提示＆amp;提示：

•打印标题以确定用于最终输出的索引（标题[0]，[1]，[2]中的内容..？）

•city_temp数据遵循标题的顺序（city_temp [0]由标题[0]描述）

•输出应如下所示：＆＃34;月份平均值：最高值＆＃34;对于北京是30.9摄氏度

•将city_temp转换为带有.split的列表（＆＃39;，＆＃39;）

Answer 1

尝试更改while循环，以便有一个端点

就像尝试在到达文件末尾后添加break语句一样（使用len查找它的长度）

或者您可以在while语句中添加一个条件来检查文件是否在最后

调试帮助：循环超出范围

1 个答案: