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dependabot[bot] 8eb3bec99f chore: bump notebook from 7.5.0 to 7.5.6 in /libs/core (#37109) 
Bumps [notebook](https://github.com/jupyter/notebook) from 7.5.0 to
7.5.6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/jupyter/notebook/releases">notebook's
releases</a>.</em></p>
<blockquote>
<h2>v7.5.6</h2>
<h2>7.5.6</h2>
<p>(<a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/application-extension@7.5.5...2e642f0cb10be314ba5d97d709cffe41bf992d9e">Full
Changelog</a>)</p>
<h3>Security patches</h3>
<ul>
<li>CVE-2026-42557 <a
href="https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-mqcg-5x36-vfcg">https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-mqcg-5x36-vfcg</a></li>
<li>CVE-2026-40171 <a
href="https://github.com/jupyter/notebook/security/advisories/GHSA-rch3-82jr-f9w9">https://github.com/jupyter/notebook/security/advisories/GHSA-rch3-82jr-f9w9</a></li>
</ul>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>Update to JupyterLab v4.5.7 <a
href="https://redirect.github.com/jupyter/notebook/pull/7902">#7902</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
</ul>
<h3>Documentation improvements</h3>
<ul>
<li>docs: Fix broken links in troubleshooting and migration docs <a
href="https://redirect.github.com/jupyter/notebook/pull/7824">#7824</a>
(<a
href="https://github.com/RamiNoodle733"><code>@​RamiNoodle733</code></a>)</li>
</ul>
<h3>Contributors to this release</h3>
<p>The following people contributed discussions, new ideas, code and
documentation contributions, and review.
See <a
href="https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports">our
definition of contributors</a>.</p>
<p>(<a
href="https://github.com/jupyter/notebook/graphs/contributors?from=2026-03-11&amp;to=2026-04-30&amp;type=c">GitHub
contributors page for this release</a>)</p>
<p><a href="https://github.com/jtpio"><code>@​jtpio</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ajtpio+updated%3A2026-03-11..2026-04-30&amp;type=Issues">activity</a>)
| <a
href="https://github.com/RamiNoodle733"><code>@​RamiNoodle733</code></a>
(<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3ARamiNoodle733+updated%3A2026-03-11..2026-04-30&amp;type=Issues">activity</a>)</p>
<h2>v7.5.5</h2>
<h2>7.5.5</h2>
<p>(<a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/application-extension@7.5.4...4f8438b0c67dc4f010bf8cd052da4f16e2ed3828">Full
Changelog</a>)</p>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>Update to JupyterLab v4.5.6 <a
href="https://redirect.github.com/jupyter/notebook/pull/7861">#7861</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
<li>[7.5.x] Drop Python 3.9 on CI <a
href="https://redirect.github.com/jupyter/notebook/pull/7860">#7860</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
<li>Fix check links <a
href="https://redirect.github.com/jupyter/notebook/pull/7857">#7857</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
</ul>
<h3>Contributors to this release</h3>
<p>The following people contributed discussions, new ideas, code and
documentation contributions, and review.
See <a
href="https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports">our
definition of contributors</a>.</p>
<p>(<a
href="https://github.com/jupyter/notebook/graphs/contributors?from=2026-02-24&amp;to=2026-03-11&amp;type=c">GitHub
contributors page for this release</a>)</p>
<p><a href="https://github.com/jtpio"><code>@​jtpio</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ajtpio+updated%3A2026-02-24..2026-03-11&amp;type=Issues">activity</a>)</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/jupyter/notebook/blob/@jupyter-notebook/tree@7.5.6/CHANGELOG.md">notebook's
changelog</a>.</em></p>
<blockquote>
<h2>7.5.6</h2>
<p>(<a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/application-extension@7.5.5...2e642f0cb10be314ba5d97d709cffe41bf992d9e">Full
Changelog</a>)</p>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>Update to JupyterLab v4.5.7 <a
href="https://redirect.github.com/jupyter/notebook/pull/7902">#7902</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
</ul>
<h3>Documentation improvements</h3>
<ul>
<li>docs: Fix broken links in troubleshooting and migration docs <a
href="https://redirect.github.com/jupyter/notebook/pull/7824">#7824</a>
(<a
href="https://github.com/RamiNoodle733"><code>@​RamiNoodle733</code></a>)</li>
</ul>
<h3>Contributors to this release</h3>
<p>The following people contributed discussions, new ideas, code and
documentation contributions, and review.
See <a
href="https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports">our
definition of contributors</a>.</p>
<p>(<a
href="https://github.com/jupyter/notebook/graphs/contributors?from=2026-03-11&amp;to=2026-04-30&amp;type=c">GitHub
contributors page for this release</a>)</p>
<p><a href="https://github.com/jtpio"><code>@​jtpio</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ajtpio+updated%3A2026-03-11..2026-04-30&amp;type=Issues">activity</a>)
| <a
href="https://github.com/RamiNoodle733"><code>@​RamiNoodle733</code></a>
(<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3ARamiNoodle733+updated%3A2026-03-11..2026-04-30&amp;type=Issues">activity</a>)</p>
<!-- raw HTML omitted -->
<h2>7.5.5</h2>
<p>(<a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/application-extension@7.5.4...4f8438b0c67dc4f010bf8cd052da4f16e2ed3828">Full
Changelog</a>)</p>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>Update to JupyterLab v4.5.6 <a
href="https://redirect.github.com/jupyter/notebook/pull/7861">#7861</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
<li>[7.5.x] Drop Python 3.9 on CI <a
href="https://redirect.github.com/jupyter/notebook/pull/7860">#7860</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
<li>Fix check links <a
href="https://redirect.github.com/jupyter/notebook/pull/7857">#7857</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
</ul>
<h3>Contributors to this release</h3>
<p>The following people contributed discussions, new ideas, code and
documentation contributions, and review.
See <a
href="https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports">our
definition of contributors</a>.</p>
<p>(<a
href="https://github.com/jupyter/notebook/graphs/contributors?from=2026-02-24&amp;to=2026-03-11&amp;type=c">GitHub
contributors page for this release</a>)</p>
<p><a href="https://github.com/jtpio"><code>@​jtpio</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter%2Fnotebook+involves%3Ajtpio+updated%3A2026-02-24..2026-03-11&amp;type=Issues">activity</a>)</p>
<h2>7.5.4</h2>
<p>(<a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/application-extension@7.5.3...e5d8418b706fcefd4208bb61c22399dd3123555b">Full
Changelog</a>)</p>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>Update to JupyterLab v4.5.5 <a
href="https://redirect.github.com/jupyter/notebook/pull/7842">#7842</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
<li>Fix PyO3 CI failure with Python 3.15 <a
href="https://redirect.github.com/jupyter/notebook/pull/7836">#7836</a>
(<a href="https://github.com/jtpio"><code>@​jtpio</code></a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="1ab2d2b992"><code>1ab2d2b</code></a>
Publish 7.5.6</li>
<li><a
href="50e5222c96"><code>50e5222</code></a>
Merge commit from fork</li>
<li><a
href="2e642f0cb1"><code>2e642f0</code></a>
Update to JupyterLab v4.5.7 (<a
href="https://redirect.github.com/jupyter/notebook/issues/7902">#7902</a>)</li>
<li><a
href="4b93f98b5a"><code>4b93f98</code></a>
Backport PR <a
href="https://redirect.github.com/jupyter/notebook/issues/7824">#7824</a>:
docs: Fix broken links in troubleshooting and migration do...</li>
<li><a
href="9a2c88fe64"><code>9a2c88f</code></a>
Publish 7.5.5</li>
<li><a
href="4f8438b0c6"><code>4f8438b</code></a>
Update to JupyterLab v4.5.6 (<a
href="https://redirect.github.com/jupyter/notebook/issues/7861">#7861</a>)</li>
<li><a
href="f78fcfada8"><code>f78fcfa</code></a>
Backport PR <a
href="https://redirect.github.com/jupyter/notebook/issues/7857">#7857</a>:
Fix check links (<a
href="https://redirect.github.com/jupyter/notebook/issues/7858">#7858</a>)</li>
<li><a
href="9e4cf2a445"><code>9e4cf2a</code></a>
[7.5.x] Drop Python 3.9 on CI (<a
href="https://redirect.github.com/jupyter/notebook/issues/7860">#7860</a>)</li>
<li><a
href="ecc3aaf1bb"><code>ecc3aaf</code></a>
Publish 7.5.4</li>
<li><a
href="e5d8418b70"><code>e5d8418</code></a>
Update to JupyterLab v4.5.5 (<a
href="https://redirect.github.com/jupyter/notebook/issues/7842">#7842</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/jupyter/notebook/compare/@jupyter-notebook/tree@7.5.0...@jupyter-notebook/tree@7.5.6">compare
view</a></li>
</ul>
</details>
<br />


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2026-05-01 10:13:25 -04:00
..
langchain_core
fix(core): preserve structured inputs on tool runs in tracers (#37108)
2026-04-30 14:56:14 -04:00
scripts
ci: avoid unnecessary dep installs in lint targets (#36046)
2026-03-17 21:23:29 -04:00
tests
fix(core): preserve structured inputs on tool runs in tracers (#37108)
2026-04-30 14:56:14 -04:00
extended_testing_deps.txt
…
Makefile
chore(core): reduce streaming metadata / perf (#36588)
2026-04-10 10:47:54 -04:00
pyproject.toml
chore(docs): update x handle references (#37081)
2026-04-29 13:56:09 -04:00
README.md
chore(docs): update x handle references (#37081)
2026-04-29 13:56:09 -04:00
uv.lock
chore: bump notebook from 7.5.0 to 7.5.6 in /libs/core (#37109)
2026-05-01 10:13:25 -04:00

README.md

🦜🍎️ LangChain Core

PyPI - Version PyPI - License PyPI - Downloads Twitter

Looking for the JS/TS version? Check out LangChain.js.

To help you ship LangChain apps to production faster, check out LangSmith. LangSmith is a unified developer platform for building, testing, and monitoring LLM applications.

Quick Install

pip install langchain-core

🤔 What is this?

LangChain Core contains the base abstractions that power the LangChain ecosystem.

These abstractions are designed to be as modular and simple as possible.

The benefit of having these abstractions is that any provider can implement the required interface and then easily be used in the rest of the LangChain ecosystem.

⛰️ Why build on top of LangChain Core?

The LangChain ecosystem is built on top of langchain-core. Some of the benefits:

  • Modularity: We've designed Core around abstractions that are independent of each other, and not tied to any specific model provider.
  • Stability: We are committed to a stable versioning scheme, and will communicate any breaking changes with advance notice and version bumps.
  • Battle-tested: Core components have the largest install base in the LLM ecosystem, and are used in production by many companies.

📖 Documentation

For full documentation, see the API reference. For conceptual guides, tutorials, and examples on using LangChain, see the LangChain Docs. You can also chat with the docs using Chat LangChain.

📕 Releases & Versioning

See our Releases and Versioning policies.

💁 Contributing

As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.

For detailed information on how to contribute, see the Contributing Guide.

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