I got a bug. Can anyone help me?

Question

I was working with nested lists. I made these functions:

def table(length, height):
list = []
for i in range(height):
list.append([])
for _ in range(length):
list[i].append(0)
return list

def possible(length, height):
table = table(length, height)
list = []
for i in range(length):
if table[0][i] == 0:
list.append(i)
return list

This function should return a list of indexes, such that for every index in this list there should be a 0 in the first list of the table.

But i get a bug: list index out of range

Can anyone help me?

Answer 1

Gašper Koželj There were a few things wrong with your original code which may not have been in the code you're working on.

I modified the original code to resolve the name collisions. However, there are other overall improvements I would have considered. But it's not fully clear what you're attempting to do.

https://code.sololearn.com/cxyrOybzzdIX/?ref=app

Since you seem to have it working in your version of the code, I'll leave it alone.

Answer 2

What is length and height?

Answer 3

Length is 7, height is 6 in example, but this is a part of a bigger project with random possibilities.

Answer 4

The list returned by table is
[[0], [0],...,[0]]

Answer 5

Yeah i wrote the table wrong in the question. But it still doesnt work.

Answer 6

What output does it give you? (and what output are you expecting?)

Answer 7

I figured it out.

I did it like this:

row = table[0]
for i in range(length):
if row[i] ==0:
List.append(i)
return list