code: def _replace_booleans(tok):
      
      toknum, tokval = tok
      if toknum == tokenize.OP:
          if tokval == '&':
              return tokenize.NAME, 'and'
          elif tokval == '|':
              return tokenize.NAME, 'or'
          return toknum, tokval
      return toknum, tokval
docs: Replace ``&`` with ``and`` and ``|`` with ``or`` so that bitwise
      precedence is changed to boolean precedence.
  
      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