Remove all whitespace in a string

Question

I want to eliminate all the whitespace from a string  on both ends  and in between words   I have this Python code   def my handle self       sentence     hello  apple        sentence strip     But that only eliminates the whitespace on both sides of the string  How do I remove all whitespace

User · Answer

An alternative is to use regular expressions and match these strange white-space characters too. Here are some examples:

Remove ALL spaces in a string, even between words:

import re
sentence = re.sub(r"\s+", "", sentence, flags=re.UNICODE)

Remove spaces in the BEGINNING of a string:

import re
sentence = re.sub(r"^\s+", "", sentence, flags=re.UNICODE)

Remove spaces in the END of a string:

import re
sentence = re.sub(r"\s+$", "", sentence, flags=re.UNICODE)

Remove spaces both in the BEGINNING and in the END of a string:

import re
sentence = re.sub("^\s+|\s+$", "", sentence, flags=re.UNICODE)

Remove ONLY DUPLICATE spaces:

import re
sentence = " ".join(re.split("\s+", sentence, flags=re.UNICODE))

(All examples work in both Python 2 and Python 3)

User · Answer

quot Whitespace quot  includes space  tabs  and CRLF  So an elegant and one-liner string function we can use is str translate  Python 3   hello  apple   translate str maketrans            n t r     OR if you want to be thorough  import string   hello  apple  translate str maketrans         string whitespace    Python 2   hello  apple  translate None     n t r    OR if you want to be thorough  import string   hello  apple  translate None  string whitespace

User · Answer

hello   n tapple  translate  ord c  None for c in    n t r      MaK already pointed out the  translate  method above  And this variation works with Python 3  see this Q amp A

User · Answer

try this   instead of using re i think using split with strip is much better def my handle self       sentence     hello  apple            join x strip   for x in sentence split     hello apple        join x strip   for x in sentence split     helloapple

User · Answer

In addition  strip has some variations   Remove spaces in the BEGINNING and END of a string   sentence  sentence strip     Remove spaces in the BEGINNING of a string   sentence   sentence lstrip     Remove spaces in the END of a string   sentence  sentence rstrip     All three string functions strip lstrip  and rstrip can take parameters of the string to strip  with the default being all white space  This can be helpful when you are working with something particular  for example  you could remove only spaces but not newlines     1  Step 1 n  strip        Or you could remove extra commas when reading in a string list    1 2 3   strip

User · Answer

import re     sentence     hello  apple  re sub        sentence   helloworld  remove all spaces  re sub          sentence   hello world  remove double spaces

User · Answer

eliminate all the whitespace from a string  on both ends  and in between words     gt  gt  gt  import re  gt  gt  gt  re sub   s      one or more repetition of whitespace           replace with empty string  - gt remove          hello        apple           helloapple     https   en wikipedia org wiki Whitespace character   Python docs    https   docs python org library stdtypes html textseq https   docs python org library stdtypes html str replace https   docs python org library string html string replace https   docs python org library re html re sub https   docs python org library re html regular-expression-syntax

User · Answer

For removing whitespace from beginning and end  use strip    gt  gt     foo bar     strip    foo bar

User · Answer

If you want to remove leading and ending spaces  use str strip      sentence     hello  apple  sentence strip    gt  gt  gt   hello  apple    If you want to remove all space characters  use str replace      NB this only removes the    normal    ASCII space character     U 0020 but not any other whitespace   sentence     hello  apple  sentence replace           gt  gt  gt   helloapple    If you want to remove duplicated spaces  use str split     sentence     hello  apple      join sentence split     gt  gt  gt   hello apple

User · Answer

To remove only spaces use str replace   sentence   sentence replace            To remove all whitespace characters  space  tab  newline  and so on  you can use split then join   sentence      join sentence split      or a regular expression   import re pattern   re compile r  s    sentence   re sub pattern      sentence    If you want to only remove whitespace from the beginning and end you can use strip   sentence   sentence strip     You can also use lstrip to remove whitespace only from the beginning of the string  and rstrip to remove whitespace from the end of the string

User · Answer

Be careful   strip does a rstrip and lstrip  removes leading and trailing spaces  tabs  returns and form feeds  but it does not remove them in the middle of the string    If you only replace spaces and tabs you can end up with hidden CRLFs that appear to match what you are looking for  but are not the same

[python] Remove all whitespace in a string

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