How to remove all whitespace in a string?

General Discussions
#1

How to remove all whitespace in a string ?

#2

To remove leading and trailing spaces from a string, you can use the str.strip() method:

>>> "  hello  apple  ".strip()
'hello  apple'

If you want to remove all space characters from a string, you can use the str.replace() method. Note that this only removes the standard ASCII space character (’ ’ U+0020) and not any other whitespace characters:

>>> "  hello  apple  ".replace(" ", "")
'helloapple'

To remove duplicated spaces from a string, you can use a combination of str.split() and str.join():

>>> " ".join("  hello  apple  ".split())
'hello apple'

These methods allow you to manipulate and clean up spaces within strings in Python.

#3

To remove only spaces from a string, you can use the str.replace() method:

sentence = sentence.replace(' ', '')

To remove all whitespace characters (including spaces, tabs, and newlines), you can use split() followed by join():

sentence = ''.join(sentence.split())

Another approach is to use a regular expression:

import re
pattern = re.compile(r'\s+')
sentence = re.sub(pattern, '', sentence)

If you only want to remove whitespace from the beginning and end of the string, you can use strip():

sentence = sentence.strip()

Additionally, you can use lstrip() to remove whitespace only from the beginning of the string, and rstrip() to remove whitespace only from the end of the string. These methods provide flexibility in handling whitespace characters in strings.

#4

The strip() method has several variations:

To remove spaces at the beginning and end of a string, use strip():

sentence = sentence.strip()

To remove spaces only at the beginning of a string, use lstrip():

sentence = sentence.lstrip()

To remove spaces only at the end of a string, use rstrip():

sentence = sentence.rstrip()

All three methods (strip(), lstrip(), and rstrip()) can take parameters specifying the characters to strip, with the default being all whitespace. This can be useful when you want to remove specific characters. For example, to remove only spaces but not newlines:

" 1. Step 1\n".strip(" ")

Or to remove extra commas when reading in a string list:

"1,2,3,".strip(",")

These variations allow you to customize how leading and trailing characters are removed from strings.