code: def test_unicode_bytes(self):
      source = textwrap.dedent(
          """
      def f():
        return b'b', u'u', 'depends_py2_py3'
      """
      )
      node = ast.parse(source)
      self.assertIsNotNone(pretty_printer.fmt(node))
  
file_path: tensorflow-upstream/tensorflow/python/autograph/pyct/pretty_printer_test.py
imports: import ast
  import textwrap
  from tensorflow.python.autograph.pyct import pretty_printer
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the PrettyPrinterTest obj's underlying member method code with example usage: obj.test_unicode_bytes() without return types