code: def filtered(s1, s2):
      v, f = next(s1), next(s2)
      while True:
          if v > f:
              f = next(s2)
              continue
          elif v < f:
              yield v
          v = next(s1)
  
imports: from itertools import islice, count
label_desc: Use image node_id 2 for calling a global function with example usage: filtered(s1, s2) without return types