title: Convert TensorFlow Model to ONNX within Python using tf2onnx
body: <p>Is it possible to install <code>tf2onnx</code>, e.g. using <code>conda</code> to convert TF models programmatically in Python. Such as:</p>
  <pre class="lang-py prettyprint-override"><code>from tf2onnx import convert
  convert(model_dir)
  </code></pre>