How to delete newline character from string?

Question

After parsing a csv file, i got a list like this:

['name', 'AGATC', 'AATG', 'TATC\n']

Is there any way that I can delete the newline (\n) character from the last element of the list so that the length of the element won't include the newline? I have tried the built-in replace() function but it did not work.

Does this answer your question? [How can I remove a trailing newline?](https://stackoverflow.com/questions/275018/how-can-i-remove-a-trailing-newline) — dpwr, Feb 09 '21 at 08:34
Does this answer your question? [Remove new line \n reading from CSV](https://stackoverflow.com/questions/27175874/remove-new-line-n-reading-from-csv) — Tomerikoo, Feb 09 '21 at 08:37

Shay Nehmad · Accepted Answer · 2021-02-09T08:33:45.877

1

It's not a NULL, it's a newline
Yes! Just use the strip() method

edited Feb 09 '21 at 08:33

answered Feb 09 '21 at 08:33

Shay Nehmad

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score 0 · Answer 2 · edited Feb 09 '21 at 08:38

0

Just remove the final character:

your_list = ['name', 'AGATC', 'AATG', 'TATC\n']
print(your_list)  # ['name', 'AGATC', 'AATG', 'TATC\n']

your_list[-1] = re.sub(r'\n$', '', your_list[-1])
print(your_list)  # ['name', 'AGATC', 'AATG', 'TATC']

edited Feb 09 '21 at 08:38

John Kugelman

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answered Feb 09 '21 at 08:33

Tim Biegeleisen

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Really? `re.sub` instead of a simple `strip()`? – Tomerikoo Feb 09 '21 at 08:35
@Tomerikoo And how do you know that the list element might not also start with whitespace (which the OP might want to retain) ? – Tim Biegeleisen Feb 09 '21 at 08:36
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Then use `rstrip('\n')`? Still seems simpler than compiling and running a regex... – Tomerikoo Feb 09 '21 at 08:38

How to delete newline character from string?

2 Answers2