Scrapy IndexError：列表索引超出范围答案

【问题标题】：Scrapy IndexError: list index out of rangeScrapy IndexError：列表索引超出范围
【发布时间】：2019-11-05 01:20:14
【问题描述】：

我正在尝试抓取游戏的结果，但是有一个游戏有第三轮，有一个游戏没有，所以在没有第三轮的游戏中会发生错误并且不要刮任何东西。

IndexError: list index out of range

部分代码：

player1_game1 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[0]
player2_game1 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[0]
player1_game2 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[1]
player2_game2 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[1]
player1_game3 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[2]
player2_game3 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[2]


items['player1_game1'] = player1_game1
items['player2_game1'] = player2_game1
items['player1_game2'] = player1_game2
items['player2_game2'] = player2_game2
items['player1_game3'] = player1_game3
items['player2_game3'] = player2_game3

如果我没有第三场比赛，我什么都不回答，留空，剩下的就刮了

错误：

IndexError: list index out of range

我怎样才能解决这个问题并产生正确的结果？

【问题讨论】：

标签： python python-3.x web-scraping scrapy

【解决方案1】：

您可以使用try...except 块：

player1_game1 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[0]
player2_game1 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[0]
player1_game2 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[1]
player2_game2 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[1]
try:
    player1_game3 = response.css('tbody tr:nth-child(1) td span::text').re('\d')[2]
    player2_game3 = response.css('tbody tr:nth-child(2) td span::text').re('\d')[2]
except:
    player1_game3 = ""
    player2_game3 = ""

【讨论】：