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Output do not update after close and reopen the notebook page

See original GitHub issue


I am using a library named keras with jupyter notebook. It’s nice that keras use a text progress bar to indicate the progress like this:

Train on 381734 samples, validate on 20092 samples
Epoch 1/1
381734/381734 [==============================] - 257s - loss: 0.4094 - val_loss: 0.2863

But the problem is that, if the script is running with the progress bar, I can’t close the webpage which I used to start the script. Otherwise I won’t see the progress bar update anymore, when I open the notebook again, if it’s still running, the title will become something like “(Starting) XXXXXX”, but I can’t see any update in the page.

The progress bar used by keras is like this:

Can anyone look into this?

Thanks in advance.

Issue Analytics

  • State:open
  • Created 8 years ago
  • Reactions:38
  • Comments:78 (12 by maintainers)

github_iconTop GitHub Comments

mcmarcommented, May 2, 2020

For anyone looking for a quick workaround:

  • Open the Chrome dev tools
  • Go to network tab
  • Click WS (Websockets)
  • Click on any of the active websockets
  • Go to messages tab
  • Click on any of the messages after the first
  • Expand content You should see your output there
hadimcommented, Aug 25, 2016

I am facing the same issue. Is it possible to reopen a notebook and get the output of the running kernel ?

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