code: def t_name(self, s):
          r'[A-Za-z_][A-Za-z_0-9]*'
          if s in RESERVED_WORDS:
              self.add_token(s.upper(), s)
          else:
              self.add_token('NAME', sf t_name(self, s):
          r'[A-Za-z_][A-Za-z_0-9]*'
          if s in RESERVED_WORDS:
              self.add_token(s.upper(), s)
          else:
              self.add_token('NAME', s)
docs: r'[A-Za-z_][A-Za-z_0-9]*