# Escapes template $-based substitutions for attributes containing $.
      # $$ is replaced with a single $.
      func_template = string.Template(
          func_match.group(2).replace('tfdtype$DT_', 'tfdtype$$DT_'))
    except Exception as e:  # pylint: disable=broad-except
      raise ValueError('The function template is in wrong format') from e

    replacement_text = ''
    for value_dict in value_list: