Remove all \n from end of list items

[snippsat]

You are doing two task here making a list and wirte to file.
Let say this is sample.txt.

Output:
203.215.181.219:36342
200.149.0.74:8080
46.209.98.227:8080
150.95.131.174:3128

Now just do the witting to file part and it seems okay.

with open('sample.txt', 'r') as fin:
    data = fin.read().splitlines(True)
with open('sample1.txt', 'w') as fout:
    fout.writelines(data[2:])

Other name sample1.txt so it don't overwrite original in this test.

Output:
46.209.98.227:8080
150.95.131.174:3128

Getting a list without \n could be done like this.

with open('sample.txt', 'r') as fin:
    data = [i.strip() for i in fin]

Output:
>>> data
['203.215.181.219:36342',
 '200.149.0.74:8080',
 '46.209.98.227:8080',
 '150.95.131.174:3128']

Writing back from this list could be.

with open('sample.txt', 'r') as fin:
    data = [i.strip() for i in fin]
with open('sample2.txt', 'w') as fout:
    for ip in data[:2]:
        fout.write(f'{ip}\n')

Output:
203.215.181.219:36342
200.149.0.74:8080