[python] Replace \n with <br />

I'm parsing text from file with Python. I have to replace all newlines (\n) with
cause this text will build html-content. For example, here is some line from file:

'title\n'

Now I do:

thatLine.replace('\n', '<br />')
print thatLine

And I still see the text with newline after it.

thatLine = thatLine.replace('\n', '<br />')

str.replace() returns a copy of the string, it doesn't modify the string you pass in.

I know this is an old thread but I tried the suggested answers and unfortunately simply replacing line breaks with <br /> didn't do what I needed it to. It simply rendered them literally as text.

One solution would have been to disable autoescape like this: {% autoescape false %}{{ mystring }}{% endautoescape %} and this works fine but this is no good if you have user-provided content. So this was also not a solution for me.

So this is what I used:

In Python:

newvar = mystring.split('\n')

And then, passing newvar into my Jinja template:

{% for line in newvar %}
    <br />{{ line }}
{% endfor %}

You could also have problems if the string has <, > or & chars in it, etc. Pass it to cgi.escape() to deal with those.

http://docs.python.org/library/cgi.html?highlight=cgi#cgi.escape

To handle many newline delimiters, including character combinations like \r\n, use splitlines (see this related post) use the following:

'<br />'.join(thatLine.splitlines())

For some reason using python3 I had to escape the "\"-sign

somestring.replace('\\n', '')

Hope this helps someone else!

thatLine = thatLine.replace('\n', '<br />')

Strings in Python are immutable. You might need to recreate it with the assignment operator.

The Problem is When you denote '\n' in the replace() call , '\n' is treated as a String length=4 made out of ' \ n '
To get rid of this, use ascii notation. http://www.asciitable.com/

example:

newLine = chr(10)
thatLine=thatLine.replace(newLine , '<br />')

print(thatLine) #python3

print thatLine #python2 .