Trying to run colab example for tensorboard on datalab

[OrielResearchCure]

Hello,

I am trying to run this colab on datalan: https://colab.research.google.com/github/tensorflow/tensorboard/blob/master/docs/r2/tensorboard_in_notebooks.ipynb#scrollTo=hzm9DNVILxJe

This code:

# Load the TensorBoard notebook extension
%load_ext tensorboard

reports on: The tensorboard module is not an IPython extension.

what else is missing from installation point of view. I have installed the followings:

!pip install tensorflow==2.0.0-alpha0
!pip install -q tf-nightly-2.0-preview
# Load the TensorBoard notebook extension
%load_ext tensorboard

Thanks, eilalan