i am trying to get input from user in multiple lines when user entered multiple line input then i stored in a variable buffer. and to print same multiline input i add \n after every iteration. now i want to find index of \n.
import re
buffer = ''
while True:
line = raw_input()
if not line: break
buffer +='\n'
buffer += line
nlf="\\n"
nl=buffer.find(nlf)
print nl
i join two lines but i want to find index \n where user press enter?
Set nlf to the line break itself instead: '\n':
nlf = '\n'
Btw. it’s usually not recommend to do string concatenation like this (see this related question), so consider using a list instead:
lines = []
while True:
line = raw_input()
if not line:
break
lines.append(line)
That the way you end up with a list of all lines (so you don’t even need to find the line break). And if you want the full text including line breaks later, you can do this:
text = '\n'.join(lines)
str.index: buffer.index('\n', 1).