How to remove /n from a list while printing or putting into an array

Question

I'm using the following code to split up a large text file into chunks of 100.

import itertools
import pprint

with open('usernames.txt') as f:
    while True:
        lines = list(itertools.islice(f, 100))  # similar to `f[0:100]`
        if not lines:
            break

        print lines

However when I print, every line has a /n of course, now I was wondering on how to rid of them.

As lines.rstrip('/n') does not work, neither does .remove().

score 3 · Answer 1 · 2015-01-09T01:14:52.763

3

That's because /n is not an escape sequence. It is just the characters / and n. A newline in Python is represented by \n. For more information, see String literals in the documentation.

To remove the newlines from the items in the list, you can use a list comprehension:

lines = [x.rstrip('\n') for x in itertools.islice(f, 100)]

edited Jan 09 '15 at 01:14

answered Jan 09 '15 at 01:09

forgive my typo, but it gives the same results. – Snowlav Jan 09 '15 at 01:11
your edit worked like a charm :) – Snowlav Jan 09 '15 at 01:13

score 1 · Answer 2 · answered Jan 09 '15 at 01:12

1

This might help as well:

line.replace('\n','').replace('\r','');

answered Jan 09 '15 at 01:12

Greg Lafrance

768
1
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It would be even better if you explained why it would help and what it would do. – Jonathan Leffler Jan 09 '15 at 01:31

How to remove /n from a list while printing or putting into an array

2 Answers2