Removenulls.py

# Copyright (c) 2014, Nathan Miller
# The Proving Ground, http://TheProvingGround.org
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

#The input to this node will be stored in the IN[0] variable.
input = IN[0]
if not hasattr(input, "__iter__"): 
	input = [input] 
cleanlist = []
for i in input:
	if hasattr(i, "__iter__"):
		for ii in i:
			if not (i is None):
				cleanlist.append(i)	
	else:
		if not (i is None):
			cleanlist.append(i)	

#Assign your output to the OUT variable
OUT = cleanlist