Tensorboard not found as magic function in jupyter

I want to run tensorboard in jupyter using the latest tensorflow 2.0.0a0. With the tensorboard version 1.13.1, and python 3.6.

using

... %tensorboard --logdir {logs_base_dir}

I get the error :

UsageError: Line magic function %tensorboard not found

Do you have an idea what the problem could be? It seems that all versions are up to date and the command seems correct too.

Thanks

Answer

UPDATE

For newer TF versions (tensorflow>=1.14.0 & tensorflow != 2.0.0a0 – newer than TF2.0-alpha) load the extension like this

%load_ext tensorboard

OLD ANSWER

The extension needs to be loaded first:

%load_ext tensorboard.notebook
%tensorboard --logdir {logs_base_dir}