code: def for_with_variable_shape_growing_vector(l):
      v = tf.constant([0, 0])
      for i in l:
          tf.autograph.experimental.set_loop_options(
              shape_invariants=[(v, tf.TensorShape([None]))]
          )
          v = tf.concat((v, [i]), 0)
      return v
  
imports: import collections
  import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 2 for calling a global function with example usage: for_with_variable_shape_growing_vector(l) and returns: v