Roman írta:
> I would appreciate it if somebody could tell me where I went wrong in
> the following snipet:
>
> When I run I get no result
>
> cnt = 0
> p=[]
> reader = csv.reader(file("f:\webserver\inp.txt"), dialect="excel",
> quotechar="'", delimiter='\t')
> for line in reader:
> if cnt > 6:
> break
> for col in line:
> p[:0].append(str(col))
>
You are appending to a slice. In that case, p[:0] creates a new list
object. You are not appending to p but to a new object (created from a
slice).
If you need to insert an item at the begining of a list, use the insert
method instead.
>>> l = [2,3,4]
>>> l.insert(1,0)
>>> l
[2, 0, 3, 4]
Best,
Laszlo
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