code: def _edge_list_to_sframe(ls, src_column_name, dst_column_name):
      
      sf = SFrame()
  
      if type(ls) == list:
          cols = reduce(set.union, (set(v.attr.keys()) for v in ls))
          sf[src_column_name] = [e.src_vid for e in ls]
          sf[dst_column_name] = [e.dst_vid for e in ls]
          for c in cols:
              sf[c] = [e.attr.get(c) for e in ls]
  
      elif type(ls) == Edge:
          sf[src_column_name] = [ls.src_vid]
          sf[dst_column_name] = [ls.dst_vid]
  
      else:
          raise TypeError('Edges type {} is Not supported.'.format(type(ls)))
  
      return sf
docs: Convert a list of edges into an SFrame.