Python - Add a line break after every single line

Question

I need to add a line break to every single line of text

I have changed a CSV file to a text file, in that text file I need to add a line break at the end of every line/sentance

I can only manage currently to add a single line break on the first line of text, I can not work out how to do it for subsequent lines

An example of what I have when I change the CSV file to Txt:

Device_1 A 10.0.0.1
Device_2 A 10.0.0.2
Device_3 A 10.0.0.3

An example of what I want it to look like

Device_1 A 10.0.0.1

Device_2 A 10.0.0.2

Device_3 A 10.0.0.3

An example of what it actually looks like after the python script runs

Device_1 A 10.0.0.1

Device_2 A 10.0.0.2
Device_3 A 10.0.0.3

The code I have tried:

import shutil

source = 'DNS_Entries.csv'
target = 'DNS_Entries_Copy.txt'

shutil.copy(source, target)

def DNS_Entries(self,DNS):
    with open(DNS) as f:
        lines = [line+'\n' for line in f.readlines()]

    with open(DNS+'DNS_Entries_Copy.txt', 'w') as f:
            f.write(''.join(lines))

I have also tried:

import shutil

source = 'DNS_Entries.csv'
target = 'DNS_Entries_Copy.txt'

shutil.copy(source, target)

def DNS_Entries(self,DNS):
    with open(DNS) as f:
        lines = [line+'\n' for line in f.readlines()]

    with open(DNS) as source:
        with open(DNS+'DNS_Entries_Copy.txt', 'w') as output:
            for line in source:
                f.write(line+'\n')

Both of the above scripts add a single line break at the end of the first line of text.

Unfortunately its never the same number or character at the end of the line to reference and each line can differ with the amount of characters/numbers per line.

Thanks

The first code works perfectly fine for me...

Tomerikoo
– Tomerikoo

2022-11-21 12:42:14 +00:00
Commented Nov 21, 2022 at 12:42 — Tomerikoo
– Tomerikoo, Commented Nov 21, 2022 at 12:42

butterflyknife · Accepted Answer · 2022-11-21 13:04:58Z

1

Sounds like a job for regex:

text = """Device_1 A 10.0.0.1
Device_2 A 10.0.0.2
Device_3 A 10.0.0.3"""

import re
print(re.sub("\n", "\n\n", text))

Be warned: as a famous rapper once almost sang, I got 99 problems and then I tried to use regex on one of them and now I have 100.

answered Nov 21, 2022 at 13:04

butterflyknife

1,59412 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Python - Add a line break after every single line

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related