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The minimum supported Python version for this project #190

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opened 2026-02-20 17:30:57 -05:00 by yindo · 2 comments
yindo commented 2026-02-20 17:30:57 -05:00
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Originally created by @gbaian10 on GitHub (Aug 16, 2024).

Checked other resources

  • I added a very descriptive title to this issue.
  • I searched the LangGraph/LangChain documentation with the integrated search.
  • I used the GitHub search to find a similar question and didn't find it.
  • I am sure that this is a bug in LangGraph/LangChain rather than my code.
  • I am sure this is better as an issue rather than a GitHub discussion, since this is a LangGraph bug and not a design question.

Description

The pyproject.toml in the root directory specifies that this project requires a Python version greater than 3.10.
But the pyproject.toml files in the libs directory indicate that the project only requires a Python version greater than 3.9.

Which one is correct?
I see Python 3.9 testing in the CI, so is it the root directory that's incorrect?

Originally created by @gbaian10 on GitHub (Aug 16, 2024). ### Checked other resources - [X] I added a very descriptive title to this issue. - [X] I searched the [LangGraph](https://langchain-ai.github.io/langgraph/)/LangChain documentation with the integrated search. - [X] I used the GitHub search to find a similar question and didn't find it. - [X] I am sure that this is a bug in LangGraph/LangChain rather than my code. - [X] I am sure this is better as an issue [rather than a GitHub discussion](https://github.com/langchain-ai/langgraph/discussions/new/choose), since this is a LangGraph bug and not a design question. ### Description The [pyproject.toml in the root directory](https://github.com/gbaian10/langgraph/blob/main/pyproject.toml#L10) specifies that this project requires a Python version greater than `3.10`. But the [pyproject.toml files in the libs directory](https://github.com/gbaian10/langgraph/blob/main/libs/langgraph/pyproject.toml#L11) indicate that the project only requires a Python version greater than `3.9`. Which one is correct? I see Python 3.9 testing in the CI, so is it the root directory that's incorrect?
yindo closed this issue 2026-02-20 17:30:57 -05:00
yindo commented 2026-02-20 17:30:58 -05:00
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@vbarda commented on GitHub (Aug 16, 2024):

@gbaian10 the pyproject in the root directory is for the monorepo and is only used for building docs. it's not used by the actual libraries, so 3.9 is the correct minimum version for libraries. i'll adjust for simplicity to minimize confusion!

@vbarda commented on GitHub (Aug 16, 2024): @gbaian10 the pyproject in the root directory is for the monorepo and is only used for building docs. it's not used by the actual libraries, so 3.9 is the correct minimum version for libraries. i'll adjust for simplicity to minimize confusion!
yindo commented 2026-02-20 17:30:59 -05:00
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@vbarda commented on GitHub (Aug 16, 2024):

Updated here https://github.com/langchain-ai/langgraph/pull/1369

@vbarda commented on GitHub (Aug 16, 2024): Updated here https://github.com/langchain-ai/langgraph/pull/1369
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Reference: langchain-ai/langgraph#190
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