code: def data_format():
      return (
          "channels_first"
          if tf.test.is_gpu_available()
          else "channels_last"
      )
  
file_path: tensorflow/tensorflow/python/eager/benchmarks/resnet50/resnet50_graph_test.py
imports: import time
  import numpy
  import tensorflow.compat.v1
  from tensorflow.python.eager.benchmarks.resnet50 import resnet50
label_desc: Use image node_id 1 for calling a global function with example usage: data_format() and returns: unknown