[newbie] confused about following list assignment
KAP
kpacera at highstream.net
Sun Feb 29 00:16:55 EST 2004
On Fri, 27 Feb 2004 12:43:55 +0000, Kenny <kccw at well.ox.ac.uk> wrote:
>
> Can someone explain why all the position zeros are being assigned the
> same value of x?
Try >>> for x in range(len(a)): print id(a[x][0])
to see that all reference the same object. The last assignment you made
with "a[i][0]=str(x*10)" is the new object that each of the above will
reference.
You need to create some copies first. Your code will work the way you want
by changing:
... a.append(b)
to this
... a.append(b[:])
Ken
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