code: def for_with_variable_structure(l):
      s = [tf.constant(0)]
      for _ in l:
          s = s + [tf.constant(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 13 for calling a global function with example usage: for_with_variable_structure(l) and returns: s