Jupyter Lab and Jupyter Notebook

What will you get with this integration?
​Jupyter Lab and Jupyter Notebooks are popular IDEs used by data scientists for data exploration, model training, error analysis, reporting, and more. 
Neptune + Jupyter integration lets you version, manage and share notebook checkpoints in your projects. Specifically, you can: 
log and display notebook checkpoints either manually or automatically during model training
connect notebook checkpoints with model training Runs in Neptune
organize checkpoints with names and descriptions 
browse checkpoints history across all Notebooks in the project
compare Notebooks side-by-side, with diffs for source, markdown, output, and execution count cells
share Notebook checkpoints or diffs with persistent links​
download Notebook checkpoints directly from the UI or Jupyter 
​See this notebook in Neptune​
Technically Neptune + Jupyter integration is implemented as a neptune-notebooks Python package which includes:
Standard Jupyter extension. The extension is written in Javascript and is visible in the web-based Jupyter UI. 
JupyterLab extension. The extension is written in Javascript and is visible in the web-based Jupyter UI.
A very basic CLI (command line interface) for uploading notebooks.
Installation
Jupyter Notebook
Prerequisites
The following libraries must be installed on your system before you begin installing neptune-notebooks extension for Jupyter:
Python 3.6 +
​pip or conda​
​Jupyter​
Step 1: Install neptune-notebooks extension
pip
conda
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pip install neptune-notebooks
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conda install -c conda-forge neptune-notebooks
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Step 2: Enable the extension for Jupyter
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jupyter nbextension enable --py neptune-notebooks
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Step 3: Install neptune-client 
pip
conda
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pip install neptune-client
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conda install -c conda-forge neptune-client
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JupyterLab
Prerequisites
The following libraries must be installed on your system before you begin installing neptune-notebooks extension for JupyterLab:
Python 3.6 +
​pip or conda​
​Node.js​
​npm​
​JupyterLab​
Install through Command Line
This is the most complete installation of neptune-notebooks which includes:
Extensions for both standard Jupyter and JupyterLab
CLI for uploading Notebook files
neptune-client package is a dependency
Step 1: Go to the console and run
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pip install neptune-notebooks
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Step 2: Start JupyterLab by running
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jupyter lab
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Step 3: In the “Build Recommended” notification that is displayed, click Build.
The build process takes up to several minutes.
Step 4: In the “Build Complete” notification that is displayed, click Reload.
Install through JupyterLab Extension Manager
This installation doesn't include the command line interface (CLI) for managing notebooks and doesn't install neptune-client. 
Step 1: In JupyterLab, enable Extension Manager, by clicking Settings > Enable Extension Manager.
Step 2: Find neptune-notebooks and click Install.
Confirm successful installation
To see if neptune-notebooks extension for Jupyter or JupyterLab was successfully installed:
open up a notebook
look at the top navigation of your notebook and look for Neptune buttons: Neptune Icon, Upload, Download, and  Activate 
Configuration
After you have successfully installed the Jupyter extension for Neptune, you connect it to your Neptune account.
Step 1: In Jupyter, click Neptune Icon.
The Configure your connection to Neptune dialog appears.
Step 2: Paste your Neptune API token. 
See how to get your Neptune API token from the Neptune UI. 
 Step 3: Click Connect
A confirmation message is displayed. It contains a link through which you can go directly to this Notebook checkpoint in Neptune.
Step 4: Click Activate
To conclude, to see Runs that you will create associated with this Notebook, you need to click Activate. 
When you restart the Jupyter kernel your notebook checkpoints may not be saved to Neptune nor connected to the Neptune Runs you created. 
To fix that you need to re-activate your Notebook by clicking Activate in the Jupyter navigation.  
Uploading notebook checkpoints
Upload notebook with a button
You can upload Notebook checkpoints from Jupyter to Neptune.
To upload the current Notebook as a checkpoint:
Click Upload.
In the dialog that is displayed, select a project from the list.
(Optional) Type in a checkpoint name and description.
Click Upload checkpoint.
A confirmation message is displayed. You can click the link in the message to open the Notebook in Neptune.
Auto-saving with neptune.init()
You can save notebook checkpoints automatically to Neptune whenever you create a Neptune Run in a notebook cell. 
Neptune connects Runs created in a notebook checkpoint with that notebook checkpoints letting you:
find saved notebook checkpoints connected to the Neptune Run by going to the Source code > Notebook snapshot
find Neptune Runs that were created in a Notebook by going to the Notebooks pane and then Details >  Runs 
To save notebook checkpoint with every new Neptune Run:
Step 1: Log the Notebook to Neptune
Before the very first time you create a Neptune Run from a notebook, you should upload that notebook to Neptune. After that, whenever you create a Run your notebook checkpoint will be logged automatically.  
To upload it click Upload button in the Jupyter navigation. 
You have to log a notebook to Neptune before you create your first Run. Otherwise, your Run and Notebook will not be connected. 
Step 2: Create a Neptune Run 
Create a Neptune Run in a notebook cell:
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import neptune.new as neptune
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​
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run = neptune.init(api_token="YOUR_API_TOKEN",
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                   project="YOUR_WORKSPACE/YOUR_PROJECT")
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Now, and with every future execution of a cell that contains neptune.init() your notebook checkpoint gets uploaded to Neptune and connected to that Neptune Run.
Step 3: See notebook snapshot in Neptune UI
Find Neptune Run you created in the Neptune UI. 
Go to Source code > Notebook snapshot to find the notebook checkpoint associated with this Run. 
You can also find your notebook checkpoint in the Notebook pane of the Neptune UI. 
For more, see Displaying Notebooks and Checkpoints. ​
Displaying Notebooks and checkpoints
The Notebooks tab in the Neptune UI provides a table of all the Notebooks in the current project.
This view lets you see what your team members are working on, review details and checkpoints associated with a Notebook, as well as share or download a Notebook and compare two or more Notebooks.
Once you select a Notebook, you can see all its contents including code and markdown cells, outputs, and execution count.
There are two tabs on the right:
Details: ID, size, creation date, latest checkpoint, owner, description, and associated Runs of the selected Notebook.
Checkpoints: all the checkpoints of the Notebook. Click a checkpoint to see the details in the main pane. From this tab, you can also access the Runs that are associated with the checkpoint.
Comparing checkpoints
The Notebooks Comparison pane lets you compare Notebook checkpoints including:
Code
Markdown
Cell Output: with prints, visualizations, and other HTML outputs 
Execution count: order in which cells were executed
To compare notebook checkpoints: 
select two Notebook checkpoints
click Compare 
explore the side-by-side comparison, just like source code.
Downloading checkpoints
You can download a specific Notebook checkpoint from Neptune to Jupyter.
To download a Notebook checkpoint from Jupyter:
Go to your Jupyter notebook
Find Neptune buttons in the top navigation
Click Download
In the dialog that is displayed, select Project, Notebook and Checkpoint
Click Download
You can also download notebook checkpoints directly from the Neptune UI. 
Using Neptune CLI for notebooks
You can create Notebooks and update Notebook checkpoints in Neptune from the command line.
To do that, use notebook sync command.
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neptune notebook sync \
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   --project MY_WORKSPACE/MY_PROJECT 
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   your_notebook.ipynb
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notebook sync lets you create new notebooks in Neptune or update existing ones with new checkpoints. 
It is highly recommended to use neptune-notebooks Jupyter extension whenever you can and use command line interface (CLI) only if you absolutely have to. 
Setup
To use the CLI command, you must export your NEPTUNE_API_TOKEN as an environment variable. You can do this in either of two ways:
run this command:
Linux/macOS
Windows
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export NEPTUNE_API_TOKEN='YOUR_LONG_API_TOKEN'
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set NEPTUNE_API_TOKEN="YOUR_LONG_API_TOKEN"
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append the line above to your ~/.bashrc or ~/.bash_profile file.
Always keep your API token secret - it is like a password to the application. Appending the “export NEPTUNE_API_TOKEN=’YOUR_LONG_API_TOKEN’” line to your ~/.bashrc or ~/.bash_profile file is the recommended method to ensure it remains secret.
Parameters
--project (optional)
Project to which to log Notebook or checkpoint. If the NEPTUNE_PROJECT environment variable is set, then this command overwrites the environment variable.
--new (optional)
Takes the user’s Notebook and creates a new Notebook in Neptune.
If the Notebook is not known to Neptune, it will be created. In such a case, you do not need to use this flag.
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neptune notebook sync \
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   --project MY_WORKSPACE/MY_PROJECT \
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   your_notebook.ipynb \
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   --new
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--update (optional)
Updates the user’s Notebook in Neptune by adding a new checkpoint to it.
If the Notebook is known to Neptune it will be updated. In such a case, you do not need to use this flag.
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neptune notebook sync \
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   --project MY_WORKSPACE/MY_PROJECT \
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   your_notebook.ipynb \
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   --update
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 How to ask for help?
Please visit the Getting help page. Everything regarding support is there:
Getting help
See also
Logging metadata
What can you log and display?
Querying and downloading metadata