如何使用 Python 将文本文件转换为二维数组？

Question

I have a text file :

ABCDEFGHIJKL.MN

My Expectation output: AB CD EF GH IJ KL

I tried this :
f = open("test.txt", "r")
output_list = []
for rec in f:
    chars = list(rec.strip())
    output_list.append(chars)
    print(chars)

But It return : ['A', 'B', 'C', ....]

Any Idea, please

Answer 1

Assuming you want to create a 2D array from a text with multiple lines, please try the following:

with open("test.txt", "r") as f:
    output_list = []
    for rec in f.read().splitlines():
        rec = rec[:-3]  # remove 3 last characters
        list = [rec[i:i+2] for i in range(0, len(rec), 2)]
        output_list.append(list)

print output_list

where "test.txt" looks like:

ABCDEFGHIJKL.MN
OPQRSTUVWX-YZ

and the output:

[['AB', 'CD', 'EF', 'GH', 'IJ', 'KL'], ['OP', 'QR', 'ST', 'UV', 'WX']]