python如何在不使用pandas的情况下读取CSV文件指定的列

由未语人先羞发布于 2020-04-09 07:38:30

def loadData(fileName):
    x = []
    y = []
    fl = csv.reader(open(fileName,'r'))
    x = list(fl)
    y.append([row[13] for row in fl])
    return x, y

I use this but got y is empty, my csv data is enter image description here

我想让x是所有行，而y输出[19.2，20.8]

嘘!安静

2020-04-09 07:38:30

您需要像对y一样遍历csv文件中的行。

x.append([row[:13] for row in fl])

Please note that its recommend to use with-Syntax for file readers
An Example for the CSV Reader from the docs:

with open('eggs.csv', newline='') as csvfile:
...     spamreader = csv.reader(csvfile, delimiter=' ', quotechar='|')
...     for row in spamreader:
...         print(', '.join(row))

未语人先羞

这家伙很懒，什么都没留下

积分
0
话题
0
评论
3238
注册排名
2465