Eleganz way to get rid of \n

[=?ISO-8859-1?Q?Hans_M=FCller?=]

Hello,

I'm quite often using this construct:

for l in open("file", "r"):
do something
here, l contains the \n or \r\n on windows at the end.
I get rid of it this way:

for l in open("file", "r"):
while l[-1] in "\r\n":
l = l[:-1]

I find this a little bit clumsy, but it works fine.

Has someone a better solution ?

Thanks

Hans

[josh logan]

On Sep 1, 9:25*am, Hans Müller <[e-mail]:

Hello,

I'm quite often using this construct:

for l in open("file", "r"):
* * * * do something

here, l contains the \n or \r\n on windows at the end.
I get rid of it this way:

for l in open("file", "r"):
* * * * while l[-1] in "\r\n":
* * * * * * * * l = l[:-1]

I find this a little bit clumsy, but it works fine.

Has someone a better solution ?

Thanks

Hans

Can you do this:

f = open(fname)
for x in f:
line = x.rstrip('\r\n')

[Wojtek Walczak]

On Mon, 01 Sep 2008 15:25:03 +0200, Hans Müller wrote:

I'm quite often using this construct:

for l in open("file", "r"):
do something

Has someone a better solution ?

The most general would be to use rstrip() without
arguments:

>>a="some string\r\n"
a.rstrip()

'some string'

>>>

but be careful, because it will also cut whitespaces:

>>a="some string\t \r\n"
a.rstrip()

'some string'

>>>

so maybe you could do this:

>>a.rstrip('\n').rstrip('\r')

'some string\t '

>>>

HTH.

--
Regards,
Wojtek Walczak,
http://tosh.pl/gminick/

[josh logan]

On Sep 1, 9:41*am, Wojtek Walczak <[e-mail]:

On Mon, 01 Sep 2008 15:25:03 +0200, Hans Müller wrote:

I'm quite often using this construct:

for l in open("file", "r"):
* *do something
Has someone a better solution ?

The most general would be to use rstrip() without
arguments:

>a="some string\r\n"
a.rstrip()

'some string'

but be careful, because it will also cut whitespaces:

>a="some string\t \r\n"
a.rstrip()

'some string'

so maybe you could do this:

>a.rstrip('\n').rstrip('\r')

'some string\t '

HTH.

--
Regards,
Wojtek Walczak,http://tosh.pl/gminick/

You can send both '\n' and '\r' in one rstrip call. No need for 2
separate calls.

[Bruno Desthuilliers]

Hans Müller a écrit :

Hello,

I'm quite often using this construct:

for l in open("file", "r"):
do something

here, l contains the \n or \r\n on windows at the end.
I get rid of it this way:

for l in open("file", "r"):
while l[-1] in "\r\n":
l = l[:-1]

I find this a little bit clumsy,

indeed.

but it works fine.

Has someone a better solution ?

help(str.rstrip)

[Fredrik Lundh]

Hans Müller wrote:

I'm quite often using this construct:

for l in open("file", "r"):
do something

here, l contains the \n or \r\n on windows at the end.

nope -- if you open a file in text mode (without the "b"), the I/O layer
will translate "\r\n" to "\n" on Windows.

if you want even more robust behaviour, use the "U" flag (for universal
newlines); that'll handle old-style Mac files too.

(as others have pointed out, a plain rstrip() is usually the best choice
anyway. giving meaning to trailing whitespace in text files is usually
a really lousy idea).

</F>