PydanticImportError: BaseSettings has been moved to the pydantic-settings package

[dillfrescott]

Traceback (most recent call last):
  File "C:\Users\micro\miniconda3\envs\test\lib\runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Users\micro\miniconda3\envs\test\lib\runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "C:\Users\micro\miniconda3\envs\test\lib\site-packages\llama_cpp\server\__main__.py", line 29, in <module>
    from llama_cpp.server.app import create_app, Settings
  File "C:\Users\micro\miniconda3\envs\test\lib\site-packages\llama_cpp\server\app.py", line 15, in <module>
    from pydantic import BaseModel, BaseSettings, Field, create_model_from_typeddict
  File "C:\Users\micro\miniconda3\envs\test\lib\site-packages\pydantic\__init__.py", line 206, in __getattr__
    return _getattr_migration(attr_name)
  File "C:\Users\micro\miniconda3\envs\test\lib\site-packages\pydantic\_migration.py", line 279, in wrapper
    raise PydanticImportError(
pydantic.errors.PydanticImportError: `BaseSettings` has been moved to the `pydantic-settings` package. See https://docs.pydantic.dev/2.0.2/migration/#basesettings-has-moved-to-pydantic-settings for more details.

For further information visit https://errors.pydantic.dev/2.0.2/u/import-error

[IgnacioFDM]

Same, solved it downgrading pydantic
pip install pydantic==1.10.11

[dillfrescott]

Oh. Thank you for the info!

[AbhinasRegmi]

In the pydantic v2 the BaseSettings has been moved to a different package. First install pydantic-settings by
pip install pydantic-settings
and replace
from pydantic import BaseSettings
with
from pydantic_settings import BaseSettings

It should work after that.

[Calandiel]

Glad to see it's nothing more complex but this really ought to be fixed on the repo

[Calandiel]

There's some additional issues related to this as far as I can tell -- type no longer exists on FieldInfo (seems to be called annotation now?) which makes the server fail.

[abetlen]

@dillfrescott was this on a pip install or via git?

FastAPI recently upgraded to pydantic v2 which should be much faster however it does introduce some breaking changes. Can you try upgrading to the new v0.1.69 version I just published?

[uogbuji]

@abetlen On v0.1.69 I got past the OP issue with pip install -U pydantic pydantic-settings fastapi but I'm now running into a related error:

.local/venv/llmhost/lib/python3.11/site-packages/pydantic/_internal/_fields.py:126: UserWarning: Field "model_alias" has conflict with protected namespace "model_".

You may be able to resolve this warning by setting `model_config['protected_namespaces'] = ('settings_',)`.
  warnings.warn(
/Users/uche/.local/venv/llmhost/lib/python3.11/site-packages/pydantic/_internal/_config.py:261: UserWarning: Valid config keys have changed in V2:
* 'schema_extra' has been renamed to 'json_schema_extra'
  warnings.warn(message, UserWarning)
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/uche/.local/venv/llmhost/lib/python3.11/site-packages/llama_cpp/server/__main__.py", line 33, in <module>
    for name, field in Settings.__model_fields__.items():
                       ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/uche/.local/venv/llmhost/lib/python3.11/site-packages/pydantic/_internal/_model_construction.py", line 193, in __getattr__
    raise AttributeError(item)
AttributeError: __model_fields__. Did you mean: 'model_fields'?

[uogbuji]

@abetlen On v0.1.69 I got past the OP issue with pip install -U pydantic pydantic-settings fastapi but I'm now running into a related error:
…

AttributeError: __model_fields__. Did you mean: 'model_fields'?

FYI the 0.1.70 release fixed this error.

[Alberoyang]

Hi~ sames as me.

And if I set pydantic to 1.10.11, will be

I can't satisfy all.

[snxraven]

I am also seeing this issue within my docker builds, not sure how to fix it, I am seeing it on all recent versions

[snxraven]

Latest release 0.1.71 fixed this issue for me.

[amj]

not currently working on 0.1.73

[larrycai]

pip install pydantic==1.10.11

now llama_cpp_python is 0.2.11, this change doesn't work

ModuleNotFoundError: No module named 'pydantic._internal'

[DLesmes]

it is not resolved, why did you close it @abetlen ❓

despite to do this:
pip install pydantic-settings

and run this:
from pydantic_settings import BaseSettings

it doesn’t work for many libraries and it's dependencies 🐍

[Srajangpt1]

I am running into similar error

[abetlen]

@DLesmes it should be resolved with the pydantic-settings dependency in pyproject.toml. If you run try python3 -m pip install pydantic-settings then python3 -c "from pydantic_settings import BaseSettings" does that still cause issues? It may be a mismatch between your pip and python intepreter.

[aguennoune]

pip install pydantic==1.10.11
It works! streamlit_pydantic won't work without this pydantic version downgrade