IndexError：从文本文件创建两个列表

Question

我不明白为什么当我运行我的代码时我得到一个 IndexError 说我的列表超出范围。我在“ if x[1] == "strongly agree": "处遇到错误。我已经多次检查我的代码，但我不知道如何修复..

这是我的代码（不包括导入）：

firstList = [0, 0, 0, 0, 0]
secondList = [0, 0, 0, 0, 0]

with open("surveyData.txt", 'r') as f:
answers = f.read().split('\n')
    
for x in answers:
x = x.split(',')
    
    if x[0] == "very happy":
       firstList[0] += 1
    elif x[0] == "happy":
       firstList[1] += 1
    elif x[0] == "neutral":
       firstList[2] += 1
    elif x[0] == "unhappy":
       firstList[3] += 1
    else:
       firstList[4] += 1 
    
    if x[1] == "strongly agree":
       secondList[0] += 1
    elif x[1] == "agree":
       secondList[1] += 1
    elif x[1] == "neutral":
       secondList[2] += 1
    elif x[1] == "disagree":
       secondList[3] += 1
    else:
       secondList[4] += 1

def showHistogram(dataList, bars):
plt.bars(bars, dataList)
plt.show()

question1_freq = ['very happy', ' happy', 'neutral', 'unhappy', 'very unhappy']
showHistogram(firstList, question1_freq)

question2_freq = ['strongly agree', 'agree', 'neutral', 'disagree', 'strongly disagree']
showHistogram(secondList, question2_freq)

示例文本文件： 不满意，强烈同意

非常不满意，非常同意

高兴，同意

中立，非常同意

高兴，同意

非常不满意，非常同意

中立，非常同意

很高兴，不同意

Answer 1

只需更改以下行，其余的似乎都可以

answers = f.read().splitlines()