code: def flatten(x: TfExpressionEx) -> TfExpression:
      """Shortcut function for flattening a tensor."""
      with tf.name_scope("Flatten"):
          return tf.reshape(x, [-1])
  
imports: import os
  import numpy
  import tensorflow
  import logging
  import tensorflow.contrib
  from typing import Any, Iterable, List, Union
label_desc: Use image node_id 4 for calling a global function with example usage: flatten(x) and returns: tf