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from typing import TYPE_CHECKING, Any
from langchain._api import create_importer
if TYPE_CHECKING:
from langchain_community.callbacks.utils import (
BaseMetadataCallbackHandler,
_flatten_dict,
flatten_dict,
hash_string,
import_pandas,
import_spacy,
import_textstat,
load_json,
)
# Create a way to dynamically look up deprecated imports.
# Used to consolidate logic for raising deprecation warnings and
# handling optional imports.
DEPRECATED_LOOKUP = {
"import_spacy": "langchain_community.callbacks.utils",
"import_pandas": "langchain_community.callbacks.utils",
"import_textstat": "langchain_community.callbacks.utils",
"_flatten_dict": "langchain_community.callbacks.utils",
"flatten_dict": "langchain_community.callbacks.utils",
"hash_string": "langchain_community.callbacks.utils",
"load_json": "langchain_community.callbacks.utils",
"BaseMetadataCallbackHandler": "langchain_community.callbacks.utils",
}
_import_attribute = create_importer(__file__, deprecated_lookups=DEPRECATED_LOOKUP)
def __getattr__(name: str) -> Any:
"""Look up attributes dynamically."""
return _import_attribute(name)
__all__ = [
"import_spacy",
"import_pandas",
"import_textstat",
"_flatten_dict",
"flatten_dict",
"hash_string",
"load_json",
"BaseMetadataCallbackHandler",
]
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