Reading a two-column file into an array?
Alex Martelli
aleax at mac.com
Tue Jul 31 11:41:45 EDT 2007
Marc 'BlackJack' Rintsch <bj_666 at gmx.net> wrote:
> On Mon, 30 Jul 2007 21:57:17 -0700, Nagarajan wrote:
>
> > a = []
> > import csv
> > reader = csv.reader(open("filename", "r"), delimiter='\t' )
> > for row in reader:
> > a.append( row )
>
> I would keep a reference to the file to close it properly and the loop can
> be replaced by a call to `list()`:
>
> import csv
>
> def main():
> data_file = open('filename', 'rb')
> a = list(csv.reader(data_file, delimiter='\t'))
> data_file.close()
That's what 2.5's with statement is all about...:
from __future__ import with_statement
def main():
with open('filename', 'rb') as f:
return list(csv.reader(f, delimiter='\t'))
Alex
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