我尝试使用从CSV文件中检索的数据对平均分数进行排序,但是当我运行代码时,它会抛出错误:
row[1] = int(row[1])
IndexError: list index out of range
我的代码如下:
print("Would you like to see previous results?")
print("Press 1 to see previous results for your class. Press 2 to close the program")
answer = int(input())
if answer == 1:
print("How would you like data to be sorted?")
print("Press 1 for average")
print("Press 2 for highest to lowest")
print("Press 3 for alphabetically")
sort_num = int(input())
if sort_num == 1:
f = open("Class 2.csv")
csv_f = csv.reader(f)
newlist = []
for row in csv_f:
row[1] = int(row[1])
row[2] = int(row[2])
row[3] = int(row[3])
average = round(sum(row[1:3])/3)
row.append(average)
newlist.append(row[0:4])
print(newlist)
有人可以解释为什么我有这个错误显示我出错了吗?
答案 0 :(得分:0)
尝试在执行已发布的操作之前打印行的内容。
f = open("Class 2.csv")
csv_f = csv.reader(f)
newlist = []
for row in csv_f:
print("row == {} // type(row) == {}".format(row, type(row)))
row[1] = int(row[1])
row[2] = int(row[2])
row[3] = int(row[3])
如果row为void或只包含一个元素,并且在最后一种情况下你必须访问元素0(在代码中:row [0]),你就会遇到这种类型的错误。
打印行类型是为了验证行的类型(但是,我不认为该行的类型与' list')
不同希望这可以帮助你: - )