code: def variable(shape, name):
      tf.reset_default_graph()
      return tf.Variable(tf.zeros(shape), name=name)
  
file_path: coach/rl_coach/tests/test_global_variable_saver.py
imports: import random
  import pickle
  import pytest
  import tensorflow
  import numpy
  from rl_coach.architectures.tensorflow_components.savers import GlobalVariableSaver
label_desc: Use image node_id 3 for calling a global function with example usage: variable(shape, name) and returns: tf