[EMAIL PROTECTED] wrote:
> hi
>
> i have a string :
> a =
> "this\nis\na\nsentence[startdelim]this\nis\nanother[enddelim]this\nis\n"
>
> inside the string, there are "\n". I don't want to substitute the '\n'
> in between
> the [startdelim] and [enddelim] to ''. I only want to get rid of the
> '\n' everywhere else.
Here is a solution using re.sub and a class that maintains state. It works when
the input text contains multiple startdelim/enddelim pairs.
import re
a = "this\nis\na\nsentence[startdelim]this\nis\nanother[enddelim]this\nis\n" * 2
class subber(object):
def __init__(self):
self.delimiterSeen = False
def __call__(self, m):
text = m.group()
if text == 'startdelim':
self.delimiterSeen = True
return text
if text == 'enddelim':
self.delimiterSeen = False
return text
if self.delimiterSeen:
return text
return ''
delimRe = re.compile('\n|startdelim|enddelim')
newText = delimRe.sub(subber(), a)
print repr(newText)
Kent
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