----- Original Message -----
> From: Ian Kelly <ian.g.ke...@gmail.com>
> To: Python <python-list@python.org>
> Cc:
> Sent: Thursday, June 5, 2014 10:18 PM
> Subject: Re: Unicode and Python - how often do you index strings?
>
> On Thu, Jun 5, 2014 at 1:58 PM, Paul Rubin <no.email@nospam.invalid>
> wrote:
>> Ryan Hiebert <r...@ryanhiebert.com> writes:
>>> How so? I was using line=line[:-1] for removing the trailing newline,
> and
>>> just replaced it with rstrip('\n'). What are you doing
> differently?
>>
>> rstrip removes all the newlines off the end, whether there are zero or
>> multiple. In perl the difference is chomp vs chop. line=line[:-1]
>> removes one character, that might or might not be a newline.
>
> Given the description that the input string is "a textfile line", if
> it has multiple newlines then it's invalid.
>
> Personally I tend toward rstrip('\r\n') so that I don't have
> to worry
> about files with alternative line terminators.
I tend to use: s.rstrip(os.linesep)
> If you want to be really picky about removing exactly one line
> terminator, then this captures all the relatively modern variations:
> re.sub('\r?\n$|\n?\r$', line, '', count=1)
or perhaps: re.sub("[^ \S]+$", "", line)
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