code: def all_dict_combinations_lbls(varied_dict, remove_singles=True, allow_lone_singles=False):
      is_lone_single = all([
          isinstance(val_list, (list, tuple)) and len(val_list) == 1
          for key, val_list in iteritems_sorted(varied_dict)
      ])
      if not remove_singles or (allow_lone_singles and is_lone_single):
          multitups_list = [
              [(key, val) for val in val_list]
              for key, val_list in iteritems_sorted(varied_dict)
          ]
      else:
          multitups_list = [
              [(key, val) for val in val_list]
              for key, val_list in iteritems_sorted(varied_dict)
              if isinstance(val_list, (list, tuple)) and len(val_list) > 1]
      combtup_list = list(it.product(*multitups_list))
      combtup_list2 = [
          [(key, val) if isinstance(val, six.string_types) else (key, repr(val))
           for (key, val) in combtup]
          for combtup in combtup_list]
      comb_lbls = [','.join(['%s=%s' % (key, val) for (key, val) in combtup])
                   for combtup in combtup_list2]
      return comb_lbls