ImportError: cannot import name 'ModelField' from 'pydantic.fields' about anthropic-sdk-python HOT 10 CLOSED

I found it. It's very unintuitive. pydantic-settings v1.99 is for pydantic v2.

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This is happening because a previous version of this library did not pin our version of pydantic to version <2, which released breaking changes.

It looks like you're on 0.3.1 of this library; this was fixed in 0.3.2, and the latest release is 0.3.4, which I recommend upgrading to.

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It looks like that pydantic-settings is causing the problem.

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We're looking into adding support for pydantic v2, but ensuring thorough support is not trivial.

In the meantime, I recommend upgrading to anthropic version 0.3.4, which should cause your pydantic version to fall back to 1.9.x. Does that work for you?

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without pydantic-settings yes.

But the following requirements files will install pydantic 2.0.3.
Also interesting about this file that if you swich order pydantic-settings and anthropic, then pip install -r will throw some weird error.

openai
beautifulsoup4
fastapi
google-cloud-aiplatform
uvicorn[standard]
gunicorn
pydantic-settings
anthropic

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You may want to pin pydantic-settings to a version <2, like this:

pydantic-settings==1.99

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I tried. It didn't help :/

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Sorry to hear that; Python dependency management can be a pain. You might try using poetry to produce a poetry.lock file, which could help you discover the reason that pydantic v2 is still being used, and fix it.

If this problem persists after you have successfully downgraded to use pydantic v1 in your project, please reopen this issue and include the new values of pip show anthropic and pip show pydantic.

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Glad to hear you figured it out! What version of pydantic-settings worked correctly for you?

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I needed only simple call so instead of fighting all this I replaced it with HTTP request :)

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