code: def eknelt(selidx, row):
      
      selidx = ctypes.c_int(selidx)
      row = ctypes.c_int(row)
      return libspice.eknelt_c(selidx, row)
docs: Return the number of elements in a specified column entry in
      the current row.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/eknelt_c.html
  
      :param selidx: Index of parent column in SELECT clause.
      :type selidx: int
      :param row: Row containing element.
      :type row: int
      :return: The number of elements in entry in current row.
      :rtype: int