code: def _make_sql_compatible(ll):
      
  
      new_ll = []
      for l in ll:
          new_l = ()
          for i in l:
              if not i:
                  new_l = new_l + (None,)
              else:
  
                  if isinstance(i, str):
                      if sys.version_info < (3, 0):
  
                          val = i.decode('utf8').encode('ascii', errors='ignore')
                      else:
                          # in py3 strings should be ok...
                          val = i
                  else:
                      val = i
                  new_l = new_l + (val,)
          new_ll.append(new_l)
  
      return new_ll
docs: Convert any python list of lists (or tuples) so that the strings are formatted correctly for insertion into
  
      Args:
          ll (list): List of lists (or tuples)