[Term Entry]Jupyter extensions entry

content/data-science/concepts/jupyter-notebook-extensions/jupyter-notebook-extensions.md

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+---
+Title: 'Jupyter Notebook Extension'
+Description: 'Jupyter Notebook extensions are community-developed plugins that enhance the functionality, customization, and usability of Jupyter Notebooks.'
+Subjects:
+  - 'Data Visualization'
+  - 'Machine Learning'
+CatalogContent:
+  - 'paths/machine-learning-engineer'
+  - 'paths/visualize-data-with-python'
+---
+
+**Jupyter Notebook extensions** are add-ons that enhance the functionality of the Jupyter Notebook interface. They allow users to customize and improve their experience by adding various features.
+
+## Examples of Jupyter Notebook Extensions
+
+1. **Code Folding**: The `jupyter_fold` extension helps users focus on specific sections by enabling code cells to be folded and unfolded.
+2. **Spellchecking**: The `spellchecker` extension highlights misspelt words in both code and Markdown cells.
+3. **Table of contents**: The `toc` extension automatically generates a table of contents based on Markdown headers, improving navigation within a notebook.
+
+## Installing Jupyter Notebook extensions
+
+The Jupyter Notebook extensions are available through the open-source package `jupyter_contrib_nbextensions`. This Python package provides several unofficial extensions designed to enhance Jupyter Notebook’s capabilities.
+
+To install it, run the following command:
+
+```shell
+pip install jupyter_contrib_nbextensions && jupyter contrib nbextension install --user
+```
+
+To add the `nbextensions` to the Jupyter server’s search directory, use:
+
+```shell
+jupyter contrib nbextension install
+```
+
+## Enabling/Disabling Extensions
+
+After installation, users need to enable specific extensions like this:
+
+```pseudo
+jupyter nbextension enable <extension-name>
+```
+
+And to disable:
+
+```pseudo
+jupyter nbextension disable <extension-name>
+```