How to use .IsValid in Python?

I am trying to create a bunch of polylines and some of them are not valid so I want to test for validity and don't include invalid polylines into my output list.

I thought it would work something like this (but the logic here is differen and I could not understand it from documentation):

def AddPoly(points):
    polylines = []

    for i in points:
        for j in points:
            for k in points:
                for l in points:
                    for m in points:
                        p = [i,j,k,l,m]
                        polyline = Rhino.Geometry.PolylineCurve(p)
                        test = Rhino.Geometry.Polyline.IsValid(polyline)
                        if test:
                            polylines.append(polyline)
    return polylines