将2D数组写入文本文件 [英] Write a 2D array to a text file

问题描述

我有一个二维数组，我想将其写入文件，该数组看起来几乎像这样:

I have a 2d array and i want to write it to a file, the array looks almost like this:

>>print (arr)
[0 0 20 
0 5 520 
2 0 720
.... 
8 -20 150
0 10 10] 

当我尝试将其写入文件时，将其保存为最后的输出，这是我使用的内容:

when i tried to write it to a file it was saved as the last output, here what i used:

ff = open('output.txt', 'w')
ff.write(arr)

这是文件中的结果

 [0 0 20 
 0 5 520 
 2 0 720
 .... 
 8 -20 150
 0 10 10] 

我在该网站的另一个问题中看到了一个解决方案 但我还是有问题，

i saw a solution in another question in this website but still i have a problem,

np.ndarray.tofile(arr,"output.txt",'\n','%s')

文件中的输出如下:

0 0 20 0 50 ...

依次类推，直到数组末尾

and so on till the end of the array

我希望输出看起来像这样:

i want the output to look like this:

 0 0 20 
 0 5 520 
 2 0 720
 .
 .
 .
 8 -20 150
 0 10 10

推荐答案

您可以将数组拆分为多个块，然后分别编写每个块.

You could split your array into chunks and write each chunk separately.

类似的东西应该可以帮助您入门:

Something like this should get you started:

myarr = [1,10,100,2,20,200,3,30,300,4,40]

def split_to_chunks(myarray, e):
    return (myarray[i:i+e] for i in xrange(0, len(myarray), e))

for i in split_to_chunks(myarr, 3):
    # etc

这篇关于将2D数组写入文本文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！