how to fix index 4 is out of bounds for axis 0 with size 4?

Question

I have two array in python, name is data2004 and data2011. I want to append data in 2004 to 2011. but I get error like this IndexError: index 66 is out of bounds for axis 0 with size 66. my array like this

adddata = []
data2004 = [2,3,4,5]
data2011 = [6,7,8,9,10]
for d2 in range(0, len(data2011[d2])):
    adddata.append(list([data2004[d2], data2011[d2]])

I know data2004 just have 4 data and data2011 have 5 data, but I when if data2004 in last array change to 0. and the the result like this

adddata = [[2,6], [3,7], [4,8], [5, 9], [0, 10]]

please help me, thank you

Indexes start from 0. So if the size is 4, indexes go from 0 to 3. — Barmar, Dec 03 '20 at 06:50
Your code requires the variables to contain lists of lists, not list of numbers. — Barmar, Dec 03 '20 at 06:53
```data2011``` have 4 index, and ```data2004``` have 3 index. how to replace ```data2004``` to 4 index? — Zmx Atah, Dec 03 '20 at 06:54
If you alter your `data2004` list then you will alter your result too. — imraklr, Dec 03 '20 at 06:55
Does https://stackoverflow.com/questions/1663807/how-to-iterate-through-two-lists-in-parallel help? — Karl Knechtel, Dec 03 '20 at 07:01

score 1 · Answer 1 · answered Dec 03 '20 at 06:56

1

Check if the index is in range of data2004, and use 0 if it isn't.

for d2 in range(0, len(data2011)):
    for r2 in range(0, len(data2011[d2])):
        if d2 < len(data2004):
            adddata.append([data2004[d2][r2], data2011[d2][r2]])
        else:
            adddata.append([0, data2011[d2][r2]])

answered Dec 03 '20 at 06:56

Barmar

741,623
53
500
612

thank you for your answer, from your answer I got a picture and I managed to solve my problem – Zmx Atah Dec 03 '20 at 07:13

score 0 · Answer 2 · answered Dec 03 '20 at 07:36

0

You can try this too:

 adddata = [list(e) for e in list(itertools.zip_longest(data2004, data2011, fillvalue = 0 ))]

answered Dec 03 '20 at 07:36

imraklr

218
3
11

how to fix index 4 is out of bounds for axis 0 with size 4?

2 Answers2