如何在python中将行从文件读入多维数组(或列表数组) [英] How to read lines from a file into a multidimensional array (or an array of lists) in python

问题描述

我有一个格式与此类似的文件:

I have a file with a format similar to this:

a,3,4,2,1
3,2,1,a,2

我想读取文件并创建一个列表数组

I want to read the file and create an array of lists

以下列方式:

array[0] = ['a','3','4','2','1']
array[1] = ['3','2','1','a','2']

我该怎么做?

到目前为止，我一直坚持:

So far I am stuck with:

f = open('./urls-eu.csv', 'r')
for line in f:
    arr = line.split(',')
print arr

我真的是python新手.

I am really new to python.

推荐答案

您快到了，您只需要执行以下操作即可:

you're almost there, you just need to do:

arr = [line.split(',') for line in open('./urls-eu.csv')]

它逐行迭代地处理文件，用逗号分隔每一行，并将结果列表累积到列表列表中.您可以取消打开模式('r')，因为它是默认模式.

it iteratively process file line by line, splits each line by comma and accumulates resulting lists into a list of lists. you can drop opening mode ('r') since it's a default one.

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