Hi all,

I am trying to find the difference between 2 lists. I have the following dyn script as in screen capture and Python implementation of the logic used to find the difference.

Logically it is looking fine to me but it seems I am missing something quite obvious. If you look at the 2 lists, from the first sublist I should have only 3 points as the rest are common in both of them.

I am attaching the dyn snap as well as the code for the new list. Any help or suggestion would be much appreciated.

```
chain1 = IN[0]
chain2 = IN[1]
result = list()
for i in range(len(chain1)):
inner = [chain for chain in chain1[i] if chain not in chain2[i]]
result.append(inner)
OUT = result
```