finding out the number of rows in a CSV file [Resolved]

SimonPalmer simon.palmer at gmail.com
Wed Aug 27 13:50:08 CEST 2008


On Aug 27, 12:41 pm, Jon Clements <jon... at googlemail.com> wrote:
> On Aug 27, 12:29 pm, "Simon Brunning" <si... at brunningonline.net>
> wrote:
>
> > 2008/8/27 SimonPalmer <simon.pal... at gmail.com>:
>
> > > anyone know how I would find out how many rows are in a csv file?
>
> > > I can't find a method which does this on csv.reader.
>
> > len(list(csv.reader(open('my.csv'))))
>
> > --
> > Cheers,
> > Simon B.
> > si... at brunningonline.nethttp://www.brunningonline.net/simon/blog/
>
> Not the best of ideas if the row size or number of rows is large!
> Manufacture a list, then discard to get its length -- ouch!

Thanks to everyone for their suggestions.

In my case the number of rows is never going to be that large (<200)
so it is a practical if slightly inelegant solution



More information about the Python-list mailing list