message: Fix import error for tf.summary.create_file_writer for 2.0.
  tensorboard/summary/_tf/summary/__init__.py's reexport_tf_summary depends on tensorflow.compat.v2 being already imported (in sys.modules).
diff: @@ -56,6 +56,10 @@ elif _tf_api_dir not in __path__:
  __path__.append(_tf_api_dir)
  # Hook external TensorFlow modules.
  +
  +# Import compat before trying to import summary from tensorboard, so that
  +# reexport_tf_summary can get compat from sys.modules
  +_current_module.compat.v2.compat.v1 = _current_module.compat.v1
  try:
  from tensorboard.summary._tf import summary
  _current_module.__path__ = (
  @@ -150,6 +154,4 @@ if hasattr(_current_module, 'keras'):
  setattr(_current_module, "metrics", metrics)
  setattr(_current_module, "optimizers", optimizers)
  setattr(_current_module, "initializers", initializers)
  -
  -_current_module.compat.v2.compat.v1 = _current_module.compat.v1
  # pylint: enable=undefined-variable
  