initial commit

venv/Lib/site-packages/langchain_classic/callbacks/utils.py

@@ -0,0 +1,48 @@
+from typing import TYPE_CHECKING, Any
+
+from langchain_classic._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__ = [
+    "BaseMetadataCallbackHandler",
+    "_flatten_dict",
+    "flatten_dict",
+    "hash_string",
+    "import_pandas",
+    "import_spacy",
+    "import_textstat",
+    "load_json",
+]