Python 2.7：IndexError：列表索引超出范围

Question

我正在尝试打开一个 csv 文件并将值从字符串转换为整数，以便对列表进行排序。我收到的结果是：

“[[], ['190'], ['200'], ['250'], ['350'], ['90']]”。

这是我的原始代码。

import csv

def bubbleSort(scores):
    for length in range(len(scores)-1,0,-1):
        for i in range(length):
            if scores[i]>scores[i+1]:
                temp = scores[i]
                scores[i] = scores[i+1]
                scores[i+1] = temp


with open ("rec_Scores.csv", "rb") as csvfile:
    r = csv.reader(csvfile)
    scores = list(r)


bubbleSort(scores)
print(scores)

我尝试在该行中添加：

scores_int = [int(score[0]) for score in scores]

但是现在我收到错误“IndexError: list index out of range”

这是我正在使用的代码的当前版本：

import csv

def bubbleSort(scores):
    for length in range(len(scores)-1,0,-1):
        for i in range(length):
            if scores[i]>scores[i+1]:
                temp = scores[i]
                scores[i] = scores[i+1]
                scores[i+1] = temp


with open ("rec_Scores.csv", "rb") as csvfile:
    r = csv.reader(csvfile)
    scores = list(r)
    scores_int = [int(score[0]) for score in scores]


bubbleSort(scores_int)
print(scores_int)

如果有人能帮助我解决我目前的问题，我将不胜感激。谢谢。

Answer 1

如果 csv 文件逐行包含数字，则此代码有效（python 2.7）：

 190
 200
 250
 350
 90