message: Reformatted with Python syntax.
diff: @@ -5184,12 +5184,14 @@ def device_v2(device_name):
  fields. Any fields which are specified override device annotations from outer
  scopes. For example:
  + ```python
  with tf.device('/job:foo'):
  # ops created here have devices with /job:foo
  with tf.device('/job:bar/task:0/device:gpu:2'):
  # ops created here have the fully specified device above
  with tf.device('/device:gpu:1'):
  # ops created here have the device '/job:foo/device:gpu:1'
  + ```
  Args:
  device_name: The device name to use in the context.
  