code: def while_with_variable_structure():
      s = {"a": tf.constant(0)}
      while tf.constant(True):
          s = tf.constant(7.0)
      return s
  
imports: import re
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 12 for calling a global function with example usage: while_with_variable_structure() and returns: s