code: def _clean_spaces_backtick_quoted_names(tok):
      
      toknum, tokval = tok
      if toknum == _BACKTICK_QUOTED_STRING:
          return tokenize.NAME, _remove_spaces_column_name(tokval)
      return toknum, tokval
docs: Clean up a column name if surrounded by backticks.
  
      Backtick quoted string are indicated by a certain tokval value. If a string
      is a backtick quoted token it will processed by
      :func:`_remove_spaces_column_name` so that the parser can find this
      string when the query is executed.
      See also :meth:`NDFrame._get_space_character_free_column_resolver`.
  
      Parameters
      ----------
      tok : tuple of int, str
          ints correspond to the all caps constants in the tokenize module
  
      Returns
      -------
      t : tuple of int, str
          Either the input or token or the replacement values