title: I want to know the file_path in the example of tensorflow
body: <p>The example of tensorflow is
  <a href="https://www.tensorflow.org/tutorials/audio/simple_audio" rel="nofollow noreferrer">https://www.tensorflow.org/tutorials/audio/simple_audio</a></p>
  <p>I want to know the <code>file_path</code> in this example as below:</p>
  <pre><code>def get_waveform_and_label(file_path):
    label = get_label(file_path)
    audio_binary = tf.io.read_file(file_path)
    waveform = decode_audio(audio_binary)
    return waveform, label
  </code></pre>
  <p>The 'file_path' is called in the function as below:</p>
  <pre><code>waveform_ds = files_ds.map(get_waveform_and_label, num_parallel_calls=AUTOTUNE)
  </code></pre>
  <p>I tried to get the value of the file_path using the <code>print(file_path)</code>, but the answer is <code>Tensor(&quot;args_0:0&quot;, shape=(), dtype=string)</code>.</p>
  <p>That is not the exact value of file_path.</p>
  <p>Finally, I don't know the value of the <code>file_path</code> and input parameters of <code>get_waveform_and_label</code> in the <code>waveform_ds = files_ds.map(get_waveform_and_label, num_parallel_calls=AUTOTUNE)</code>.</p>