（Python）IndexError：列表索引超出范围

Question

这个功能：

def assisted_by(self, players):

    text = self.event_text.split('Assisted')

    if len(text) > 1:

       print ([i for i in players if i in text[1]])

       return [i for i in players if i in text[1]][0]

    else:

       return 'N/A'

打印数百个项目并以一个空列表结束：

(...)

['Kelechi Iheanacho']

['James Maddison']

['Wilfried Zaha']

['Emiliano Buendia']

[]

返回以下错误：

  File "data_gathering.py", line 1057, in assisted_by

    return [i for i in players if i in text[1]][0]

IndexError: list index out of range

如何在不删除[0]索引的情况下修复此错误？

Answer 1

您无法从空列表中获取项目 0。您可以在尝试之前检查长度：def assisted_by(self, players):    text = self.event_text.split('Assisted')    if len(text) > 1:        data = [i for i in players if i in text[1]]        print(data)        if data:            return data[0]    return 'N/A'~