code: def insrti(item, inset):
      
      assert isinstance(inset, stypes.SpiceCell)
      if hasattr(item, "__iter__"):
          for i in item:
              libspice.insrti_c(ctypes.c_int(i), ctypes.byref(inset))
      else:
          item = ctypes.c_int(item)
          libspice.insrti_c(item, ctypes.byref(inset))
docs: Insert an item into an integer set.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/insrti_c.html
  
      :param item: Item to be inserted.
      :type item: Union[float,Iterable[int]]
      :param inset: Insertion set.
      :type inset: spiceypy.utils.support_types.SpiceCell