Python insert "\" in string

Question

I'm trying to insert a backslash in a string but when I do this:

s1='cn=Name Surname (123)'
s1[:17] + '\' + s1[17:]

I get

SyntaxError: EOL while scanning string literal

Also, tried this but it inserts 2 backslashes

s1[:17] + '\\' + s1[17:]

The final string should look like this

s1='cn=Name Surname \(123\)'

@thegrinner: that is the one thing you cannot do in a raw string. You cannot end it in one slash. — Martijn Pieters
– Martijn Pieters, Commented Aug 30, 2013 at 14:17
@sergei "but it inserts 2 backslashes" no, it doesn't. It only looks so for representation purposes. — glglgl
– glglgl, Commented Aug 30, 2013 at 14:18

score 5 · Accepted Answer · 2013-08-30 14:47:59Z

5

Here:

>>> s1 = 'cn=Name Surname (123)'
>>> x = s1[:16]+'\\'+s1[16:-1]+'\\'+s1[-1:]
>>> x
'cn=Name Surname \\(123\\)'
>>> print x
cn=Name Surname \(123\)
>>>

You have to print the string. Otherwise, you will see \\ (which is used in the interpreter to show a literal backslash).

edited Aug 30, 2013 at 14:47

answered Aug 30, 2013 at 14:17

user2555451

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Comments

falsetru · Accepted Answer · 2013-08-30 14:14:40Z

4

>>> s1='cn=Name Surname (123)'
>>> s1[:17] + '\\' + s1[17:]
'cn=Name Surname (\\123)'

It seems like two backslash, but it's actually containing only one backslash.

>>> print(s1[:17] + '\\' + s1[17:])
cn=Name Surname (\123)
>>> print s1[:17] + '\\' + s1[17:-1] + '\\' + s1[-1:]
cn=Name Surname (\123\)

answered Aug 30, 2013 at 14:14

falsetru

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1 Comment

user2555451 Over a year ago

You got the print part right but the final result isn't like he wanted.

CCKx · Accepted Answer · 2013-08-30 14:27:56Z

1

If you're just entering it in the python command line interpreter and pressing enter, it will show up as two backslashes because the interpreter shows the escape character. However, if you saved it to a file, or if you used it in a "print" command it will suppress the escape character and print the actual value, which in this case is just one backslash.

answered Aug 30, 2013 at 14:27

CCKx

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Comments

Germano · Accepted Answer · 2013-08-30 14:22:29Z

0

Can something like this suffice?

print(s1.replace('(', '\\(').replace(')', '\\)'))

edited Aug 30, 2013 at 14:22

answered Aug 30, 2013 at 14:16

Germano

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5 Comments

Ashwini Chaudhary Over a year ago

That doesn't answers the question.

Germano Over a year ago

@AshwiniChaudhary Right. I fixed it.

Germano Over a year ago

@AshwiniChaudhary Yes, it inserts 2 backslashes to get the second one right. Have you run the code?

Ashwini Chaudhary Over a year ago

I know your code works but question was why I am getting \\ in the output?(repr vs str)Add explanation related to that in your answer.

Germano Over a year ago

He was actually getting a SyntaxError, plus there was an issue with the index used to insert the char. Can't see any question about "why".

2winners · Accepted Answer · 2021-10-05 00:24:51Z

0

for folder in Chart_Folders:
    files = os.listdir(path + '\\' + folder)
    print(files)

indeed this works

answered Oct 5, 2021 at 0:24

2winners

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1 Comment

Jan Wilamowski Over a year ago

This doesn't address the question.

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