code: def nonrepeats(inlist):
      
      nonrepeats = []
      for i in range(len(inlist)):
          if inlist.count(inlist[i]) == 1:
              nonrepeats.append(inlist[i])
      return nonrepeats
docs: Returns items that are NOT duplicated in the first dim of the passed list.
  
  Usage:   nonrepeats (inlist)