How to remove \n from the string using string module

Question

import string
s = "Salut\n\tComment ca va ?"
t = str.maketrans("\n"," ")
y = str.maketrans("\t"," ")
#z = str.maketrans("\n\t","  ")
s = s.translate(t).translate(y)

My Out > 'Salut Comment ca va ?' Expected > 'Salut Comment ca va ?' # only one space after the Salut

After maketrans we need to give space, why cant we give a null

Disclaimer I can use replace and regex for this but that is not the case

#with replace
s.replace('\n', '').replace('\t','')
#with regex
regex = re.compile(r'[\n\t]')
regex.sub("", s)

You don't need to import string here

AlexandreS
– AlexandreS

2019-10-22 11:52:31 +00:00
Commented Oct 22, 2019 at 11:52 — AlexandreS
– AlexandreS, Commented Oct 22, 2019 at 11:52

Vilius Klakauskas · Accepted Answer · 2019-10-22 12:02:28Z

1

You can replace it with a dict that maps to None.

import string
s = "Salut\n\tComment ca va ?"

t =  {"\t":None,
      "\n": " "}
y = str.maketrans(t)
s = s.translate(y)
print(s)

Or if you don't want to use a dict you can do it all in one line (as per str.maketrans) like so: y = str.maketrans("\n"," ","\t") # third argument chars are mapped to None

edited Oct 22, 2019 at 12:02

answered Oct 22, 2019 at 11:57

Vilius Klakauskas

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Frank · Accepted Answer · 2019-10-22 11:51:00Z

1

Your problem is, that you replace both (\n and \t) with a space.

s.replace('\n', '').replace('\t', ' ')

answered Oct 22, 2019 at 11:51

Frank

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Lior Cohen · Accepted Answer · 2019-10-22 11:53:27Z

1

another minimal and more general option is to

' '.join(s.split())


s = "Salut\n\tComment ca va ?"
' '.join(s.split())
'Salut Comment ca va ?'

answered Oct 22, 2019 at 11:53

Lior Cohen

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mulaixi · Accepted Answer · 2019-10-22 11:54:14Z

1

You can use replace.

import string
s = "Salut\n\tComment ca va ?"
t = str.maketrans("\n"," ")
y = str.maketrans("\t"," ")
#z = str.maketrans("\n\t","  ")
s = s.translate(t).translate(y)
print('Before:', s)
s=s.replace("  ", " ") #just added this line
print('After:', s)

But if you don't add extra white space during translation, you won't need this.

Before: Salut  Comment ca va ?
After: Salut Comment ca va ?

answered Oct 22, 2019 at 11:54

mulaixi

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