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Runtimes

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21 May 2026·4 min read
What is a Jupyter notebook (and how does the runtime work)?
A short reference on Jupyter notebooks — the two-process architecture, the five ZeroMQ sockets between frontend and kernel, the .ipynb file format, and the hidden-state pitfall that catches almost everyone.
#jupyter
#python
#data-science
#ipython
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Mart Traagel

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