How to import .txt file into python

Question

I have a text file with many values like

2.81,5.62
7.14,8.00
2.72,5.44
3.87,7.74
1.90,3.80
7.82,8.00
7.02,8.00
5.50,8.00
9.15,8.00
4.87,8.00
8.08,8.00
5.58,8.00
9.13,8.00

Now I need to read these values as I want to put the first value into an array array1 and then the second value in an array array2.

Possible duplicate of How do I read a file line-by-line into a list? — Aman Jaiswal
– Aman Jaiswal, Commented Mar 24, 2017 at 19:56

Mureinik · Accepted Answer · 2017-03-24 19:54:15Z

3

You can use readlines() to read all the lines, and then split each line by the , character:

f = open('numbers.txt', 'r')
list1, list2 = zip(*[x.split(',') for x in f.readlines()])

answered Mar 24, 2017 at 19:54

Mureinik

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dot.Py · Accepted Answer · 2017-03-24 19:55:18Z

1

You just have to:

open() file in read-only mode
read() each line
for each line in file
1. split() each line at ,
2. append() first part to array1 and second part to array2
3. done

Code:

array1 = []
array2 = []

with open('filename.txt', 'r') as f:
    for line in f.readlines():
        l = line.strip().split(',')
        array1 = l[0]
        array2 = l[1]

answered Mar 24, 2017 at 19:55

dot.Py

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Comments

Yaakov Bressler · Accepted Answer · 2020-08-10 15:53:40Z

1

You could use numpy:

my_data = np.loadtxt('poo.txt', delimiter=",", unpack=True)
list1, list2 = my_data[::] #unpack your array

edited Aug 10, 2020 at 15:53

answered Aug 10, 2020 at 15:47

Yaakov Bressler

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