Fredrik Lundh wrote:
> Fredrik Lundh wrote:
>
> >> I have a code
> >> ==================CODE=============
> >> List=[['1', 'a', '6'], ['1', 'b', '6'], ['1', 'c', '6'],
> >> ['1', 'd', '6'],['2', 'a','6'], ['2', 'b', '6'],
> >> ['2', 'c', '6'], ['2', 'd', '6'], ['3', 'a', '6'],
> >> ['3','b', '6'], ['4', 'a', '6'], ['4', 'b', '6']]
> >>
> >>
> >> for x in List:
> >> temp=[]
> >> print x
> >> for y in List:
> >> if x[0]==y[0]:
> >> print y[0],y[1]
> >> temp.append(y)
> >> for z in temp:
> >> List.remove(z)
> >> print 'rem', z
> >
> > the for loop uses an internal index to fetch items from the list you're
> > looping over, so if you remove items from it, you'll end up skipping
> > over items.
>
> forgot to mention that the fix is to change the first for statement to:
>
> for x in List[:]:
>
> </F>
Thanx Fredrik Lundh for ur response. I tried ur fix But the output i am
getting is repeated.
for x in List[:]:
t2=[]
print x[0]
for y in List:
if x[0]==y[0]:
print y[1],y[2]
t2.append(y)
for z in t2:
List[:].remove(z)
The output i am getting is now is:
1
a 6
b 6
c 6
d 6
1
a 6
b 6
c 6
d 6
1
a 6
b 6
c 6
d 6
1
a 6
b 6
c 6
d 6
2
a 6
b 6
c 6
d 6
2
a 6
b 6
c 6
d 6
2
a 6
b 6
c 6
d 6
2
a 6
b 6
c 6
d 6
3
a 6
b 6
3
a 6
b 6
4
a 6
b 6
4
a 6
b 6
Can u show me where i am going wrong.
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