Removing newline character from string in Python (original) (raw)

Last Updated : 24 Dec, 2024

When working with text data, newline characters (\n) are often encountered especially when reading from files or handling multi-line strings. These characters can interfere with data processing and formatting. In this article, we will explore different methods to remove newline characters from strings in Python.

**Using str.replace()

str.replace() method is the most simple and efficient way to remove all newline characters from a string. It replaces every occurrence \n with an empty string.

Python `

s = "Python\nWith\nGFG"

cleaned_text = s.replace("\n", "") print(cleaned_text)

`

**Explanation:

• Here replace() is used to replace \n with an empty string.
• It removes all newline characters in one operation.

Let’s see some more methods to remove newline characters from string in Python.

Table of Content

• Using str.splitlines() and str.join()
• Using List Comprehension
• Using Regular Expressions (re.sub())

**Using str.splitlines() and str.join()

This method splits the string into a list of lines and then joins them back without newline characters.

Python `

a = "Python\nWith\nGFG" cleaned_text = "".join(a.splitlines()) print(cleaned_text)

`

**Explanation:

• splitlines() splits the string text into a list of lines.
• join() takes this list and concatenates its elements, adding no separator ("") between them.
• We get a single string without newline characters.

U**sing List Comprehension

List comprehension iterates through each character in the string, filtering out newline characters.

Python `

s = "Python\nWith\nGFG" cleaned_text = "".join([char for char in s if char != "\n"]) print(cleaned_text)

`

**Explanation:

• The list comprehension creates a new list containing all characters in text except \n.
• The join() method concatenates these characters into a single string.

Using Regular Expressions (re.sub())

Regular expressions allow us to find and replace patterns in text. The re.sub() function can match newline characters and remove them.

Python `

import re s = "Python\nWith\nGFG" cleaned_text = re.sub(r"\n", "", s) print(cleaned_text)

`

**Explanation:

• The re.sub() function looks for all matches of the pattern \n in text.
• It replaces each match with an empty string.
• The resulting string, cleaned_text, no longer contains newlines.