Bug Description

After installing openbb==4.6.0 (or 4.5.0/4.3.5) with openbb-core==1.6.0, importing any module fails:

from openbb import obb
obb.equity.price.quote("AAPL", provider="yfinance")
# ImportError: cannot import name 'OBBject_EquityInfo' from 'openbb_core.app.provider_interface'

The auto-generated package files (e.g. openbb/package/equity.py) contain:

from openbb_core.app.provider_interface import (
    OBBject_EquityInfo,
    OBBject_EquityScreener,
    ...
)

But ProviderInterface.return_annotations creates these types dynamically and never registers them as module-level attributes on openbb_core.app.provider_interface.

The "Building..." rebuild on first import also fails to regenerate correct package files.

Environment

• Python 3.12.3 (macOS arm64)
• openbb 4.6.0, openbb-core 1.6.0
• Installed via uv pip install openbb

Root Cause

package_builder.py generates from openbb_core.app.provider_interface import OBBject_X because the dynamically created types have __module__ == "openbb_core.app.provider_interface". But the types only exist in the return value of ProviderInterface.return_annotations, not as module attributes.

Fix

Add a __getattr__ hook at the end of openbb_core/app/provider_interface.py:

_cached_annotations = None

def __getattr__(name: str):
    if name.startswith("OBBject_"):
        global _cached_annotations
        if _cached_annotations is None:
            pi = ProviderInterface()
            _cached_annotations = pi.return_annotations
        model_name = name[len("OBBject_"):]
        if model_name in _cached_annotations:
            return _cached_annotations[model_name]
    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")

This lazily resolves OBBject_* types when imported, matching the pattern the package builder generates. Tested and confirmed working.

Workaround

The REST API server (openbb-api) works fine since it does not use the generated package imports.