How to trim/remove "\n" in a string in python

Question

I have query.I am new to Python

Lets say I have a file in.txt. Inside this file I have some name like below.

Sunday

Monday

Tuesday
.
.

I want to put them into a list, I am doing:

#!/usr/bin/python3
with open("in.txt") as f:
lines = f.readlines()
lines = [l for l in lines]
print (lines);

The output is:

['Sunday\n', 'Monday\n', 'Tuesday\n']

I want to print it like:

['Sunday', 'Monday', 'Tuesday']

how will I remove \n

Any suggestion will great help, I tried rstrip() it didn't work.

How did you try to use `rstrip()` ? – Jon Clements Mar 22 '19 at 07:54 — Jon Clements, Mar 22 '19 at 07:54

score 1 · Answer 1 · answered Mar 22 '19 at 07:56

1

Try this :

lines = [l.strip() for l in lines]

answered Mar 22 '19 at 07:56

Guybrush · Answer 2 · 2019-03-22T08:05:49.213

1

It should work with rstrip() or even strip(), like this:

with open("in.txt") as f:
    lines = f.readlines()

lines = [l.rstrip() for l in lines]
print (lines)

Or, more concisely:

with open("in.txt") as f: 
    lines = [line.rstrip() for line in f]

edited Mar 22 '19 at 08:05

answered Mar 22 '19 at 07:56

Guybrush

U13-Forward · Answer 3 · 2019-03-22T07:57:42.050

1

Use a list comprehension with rstrip:

with open("in.txt") as f:
    lines = [i.rstrip() for i in f]
print(lines)

Output:

['Sunday', 'Monday', 'Tuesday']

edited Mar 22 '19 at 07:57

answered Mar 22 '19 at 07:56

U13-Forward

1

Don't need the `.readlines()` there... that'll read the entire file first... just loop line-by-line using just `f` instead... so just something like lines = [line.rstrip() for line in f]` is fine. – Jon Clements Mar 22 '19 at 07:57
@JonClements Good point, edited mine. – U13-Forward Mar 22 '19 at 07:58
Thanks for quick response .. – s.k.Dash Mar 22 '19 at 08:03

3 Answers3