appending into a list

[c james]

Beema shafreen wrote:
>   2721520      2721569    A_16_P21360235    199    -49
>   2721768      2721821    A_16_P03641971    139    -53
>   2721960      2722004    A_16_P21360237    312    -44
> I need to append the column D and E into a list:
>                             in such a way that the list should have 
> [D,E,D,E,D,E........]
> How do i do it.
> 
> regards
> shafreen

Without a header, you could use something like

data = [x.split()[-2:] for x in open(filename).readlines()]

With header

f = open(filename)
f.readline()
data = [x.split()[-2:] for x in f.readlines()]