codekingpro/portable-devtools

1from typing import TYPE_CHECKING, Any2 3from langchain_classic._api import create_importer4 5if TYPE_CHECKING:6    from langchain_community.vectorstores.utils import (7        DistanceStrategy,8        filter_complex_metadata,9        maximal_marginal_relevance,10    )11 12# Create a way to dynamically look up deprecated imports.13# Used to consolidate logic for raising deprecation warnings and14# handling optional imports.15DEPRECATED_LOOKUP = {16    "DistanceStrategy": "langchain_community.vectorstores.utils",17    "maximal_marginal_relevance": "langchain_community.vectorstores.utils",18    "filter_complex_metadata": "langchain_community.vectorstores.utils",19}20 21_import_attribute = create_importer(__package__, deprecated_lookups=DEPRECATED_LOOKUP)22 23 24def __getattr__(name: str) -> Any:25    """Look up attributes dynamically."""26    return _import_attribute(name)27 28 29__all__ = [30    "DistanceStrategy",31    "filter_complex_metadata",32    "maximal_marginal_relevance",33]34