How to Remove all Whitespace in a String in Python

Using str.replace Function

The str.replace(x) function returns a copy of the string with all occurrences of substring old replaced by new.

See the following example:

#!/usr/bin/python3

s = " \nHello World "

n = s.replace(" ", "")
print('{!r}'.format(n))

'\nHelloWorld'

Using str.split Method

If you want to remove spaces, use str.split() followed by str.join():

#!/usr/bin/python3

s = " \nHello World "

n = ''.join(s.split())
print('{!r}'.format(n))

'HelloWorld'

Using regular Expression

To remove all whitespace characters (space, tab, newline, and so on) you can use a regular expression:

#!/usr/bin/python3

# Import module
import re

s = " \nHello World "

n = re.sub(r"\s+", "", s, flags=re.UNICODE)
print('{!r}'.format(n))

'HelloWorld'