Delete /n at end of a String (Python)

Question

How can I delete a /n linebreak at the end of a String ?

I´m trying to read two strings from an .txt file and want to format them with os.path.join() method after I "cleared" the string.

Here you can see my try with dummy data:

content = ['Source=C:\\Users\\app\n', 'Target=C:\\Apache24\\htdocs']

for string in content:
    print(string)
    if string.endswith('\\\n'):
        string = string[0:-2]

print(content)

I think you're trying to modify the iterator rather than the contents, besides this does what you want: `[x.rstrip('\n') for x in content]` — EdChum, Dec 15 '15 at 09:32

score 4 · Accepted Answer · answered Dec 15 '15 at 09:34

You can not update a string like you are trying to. Python strings are immutable. Every time you change a string, new instance is created. But, your list still refers to the old object. So, you can create a new list to hold updated strings. And to strip newlines you can use rstrip function. Have a look at the code below,

content = ['Source=C:\\Users\\app\n', 'Target=C:\\Apache24\\htdocs']
updated = []
for string in content:
    print(string)
    updated.append(string.rstrip())

print(updated)

score 3 · Answer 2 · answered Dec 15 '15 at 09:33

3

You can use rstrip function. it trims any 'empty' string including \n from the string, like below:

>>> a = "aaa\n"
>>> print a
aaa
>>> a.rstrip()
'aaa'

answered Dec 15 '15 at 09:33

resec

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score 1 · Answer 3 · answered Dec 15 '15 at 09:37

1

To remove only \n use this:

string = string.rstrip('\n')

answered Dec 15 '15 at 09:37

Kenly

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score 0 · Answer 4 · answered Dec 15 '15 at 09:35

0

When you do string[0:-2] you are actually removing 2 characters from the end, while \n is one character.

try:

content = map(lambda x: x.strip(), content)

answered Dec 15 '15 at 09:35

mirosval

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Delete /n at end of a String (Python)

4 Answers4