reading csv problem
Cameron Walsh
cameron.walsh at gmail.com
Wed Nov 15 01:33:15 EST 2006
ajikoe at gmail.com wrote:
> Hello,
>
> I use csv to take information from file.
> import csv
> reader = csv.reader(open('t.csv'))
>
> for row in reader:
> print row # it is perfectly OK
>
> ---------------------------------------------------------------------
> But If I use this code I have problem
> import csv
> reader = csv.reader(open('t.csv'))
>
> for row in reader:
> print row # it is perfectly OK
> for row in reader:
> print row # it is not printed on the monitor???
>
> Why does only the first print row work here?
>
> TIA,
> ajikoe
>
Because reader is an iterator and has no means of going back to its
beginning.
You could make a list out of it:
lines = list(csv.reader(open('t.csv')))
for row in lines:
print row
for row in lines:
print row
Hope it helps,
Cameron.
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