read csv error question

MRAB google at
Tue Feb 24 01:08:51 CET 2009

Benjamin Kaplan wrote:
> On Mon, Feb 23, 2009 at 6:43 PM, MRAB <google at 
> <mailto:google at>> wrote:
>     Vincent Davis wrote:
>         I am trying to read a csv file from excel on a mac. I get the
>         following error.
>         SystemExit: file some.csv, line 1: new-line character seen in
>         unquoted field - do you need to open the file in
>         universal-newline mode?
>         I was using the example code
>         import csv, sys
>         reader = csv.reader(open('/Volumes/vincentdavis
>         2/match/data/matchdata2008.csv', "rb"))
>         try:
>            for row in reader:
>                print row
>         except csv.Error, e:
>            sys.exit('file %s, line %d: %s' % (filename, reader.line_num, e))
>         I think this has to do with the end of line character but I am
>         unsure how to fix it. I don't what to change the actual csv file
>         I would like to fix the code.
>     FYI, Mac line endings are carriage-return '\r', Linux line endings
>     are linefeed '\n', and Windows endings are _both_ '\r\n'.
> Just to clarify, only the old Mac OSes (1-9) use carriage returns. OS X 
> is Unix-based so it uses line feeds.
Slightly OT, but PPD files on Macs used to work whatever the line
endings (as they should, according to the spec), but at some point on
MacOS X they broke that and PPD files would work only with CR line
endings. I don't know if they've fixed that. Anyway, although it's Unix
underneath I'm not so sure that they don't use CR line endings elsewhere
for backwards compatibility.

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