python爬虫selector.xpath的问题

Question

想爬取数据“2868.46和-0.07%”时报了这个错误是什么问题呢？爬文本的时候是正常的，

要爬取的网页代码：

写的爬虫语言，
news_text2 = selector.xpath('//html/body/div[5]/div[4]/a[1]/span/text()')[0]
print(news_text)

报的错误
Traceback (most recent call last):
File "L:/PycharmProjects/untitled/newstest/test.py", line 11, in
news_text2 = selector.xpath('//html/body/div[5]/div[4]/a[1]/span/text()')[0]
IndexError: list index out of range

Answer 1

index out of range,你的 selector.xpath()执行之后返回的是空值，检查下路径没问题的话试一下

print( selector.xpath('//html/body/div[5]/div[4]/a[1]/span/text()').get())

https://docs.scrapy.org/en/latest/topics/selectors.html