penjee . com and non-pythonic code

[wavic]

Warning: using a comprehension for the side effects should only be attempted by trained professionals.

numbers = [12, 37, 5, 42, 8, 3]
even,odd=[],[]
_=[[even,odd][i%2].append(i) for i in numbers]

I am totally lost here.   What did you do? 

@buran, thank you for this. I was thinking that list.next() is next element from the list but it is next index. And it's reindexing all when I change the list.