Combinations of nested lists

[P.Tod]

Hello, I am trying to figure out how to get the result on the right given the list on the left. The list on the left will always contain 4 lists of points ( every list can have more than 1 point ) from which I want to create all possible combinations to use for vertices for quadrilaterals. Thanks!

[Draxl_Andreas]

@P.Tod ,

i can just give a starter for this topic

Merge elements in list of lists

A = IN[0]

OUT = [reduce(lambda a,b: a+b, i) for i in A]

I think some list.Lacing should be also included

[Alien]

I’m pretty sure there’s a far simpler way but I did it like this:

[P.Tod]

Thanks @Alien you can check the full graph that I needed this for here Grid subdivision from boundary of polygon