Log specifics on mismatched dependencies

libs/aws/langchain_aws/chat_models/bedrock.py

@@ -622,26 +622,30 @@ def _combine_llm_outputs(self, llm_outputs: List[Optional[dict]]) -> dict:
         return final_output
 
     def get_num_tokens(self, text: str) -> int:
-        if self._model_is_anthropic and check_anthropic_tokens_dependencies():
-            return get_num_tokens_anthropic(text)
-        else:
-            if self._model_is_anthropic:
+        if self._model_is_anthropic:
+            bad_deps = check_anthropic_tokens_dependencies()
+            if not bad_deps:
+                return get_num_tokens_anthropic(text)
+            else:
                 logger.debug(
-                    "Falling back to default token counting due to incompatible or missing Anthropic dependencies. "
-                    "To fix this, ensure that you have anthropic<=0.38.0, httpx<=0.27.2, and Python<=3.12 installed."
+                    "Falling back to default token counting due to incompatible/missing Anthropic dependencies:"
                 )
-            return super().get_num_tokens(text)
+                for x in bad_deps:
+                    logger.debug(x)
+        return super().get_num_tokens(text)
 
     def get_token_ids(self, text: str) -> List[int]:
-        if self._model_is_anthropic and check_anthropic_tokens_dependencies():
-            return get_token_ids_anthropic(text)
-        else:
-            if self._model_is_anthropic:
+        if self._model_is_anthropic:
+            bad_deps = check_anthropic_tokens_dependencies()
+            if not bad_deps:
+                return get_token_ids_anthropic(text)
+            else:
                 logger.debug(
-                    "Falling back to default token ids retrieval due to incompatible or missing Anthropic dependencies."
-                    " To fix this, ensure that you have anthropic<=0.38.0, httpx<=0.27.2, and Python<=3.12 installed."
+                    "Falling back to default token ids retrieval due to incompatible/missing Anthropic dependencies:"
                 )
-            return super().get_token_ids(text)
+                for x in bad_deps:
+                    logger.debug(x)
+        return super().get_token_ids(text)
 
     def set_system_prompt_with_tools(self, xml_tools_system_prompt: str) -> None:
         """Workaround to bind. Sets the system prompt with tools"""

libs/aws/langchain_aws/llms/bedrock.py

@@ -1300,23 +1300,28 @@ async def _acall(
         return "".join([chunk.text for chunk in chunks])
 
     def get_num_tokens(self, text: str) -> int:
-        if self._model_is_anthropic and check_anthropic_tokens_dependencies():
-            return get_num_tokens_anthropic(text)
-        else:
-            if self._model_is_anthropic:
+        if self._model_is_anthropic:
+            bad_deps = check_anthropic_tokens_dependencies()
+            if not bad_deps:
+                return get_num_tokens_anthropic(text)
+            else:
                 logger.debug(
-                    "Falling back to default token counting due to incompatible or missing Anthropic dependencies. "
-                    "To fix this, ensure that you have anthropic<=0.38.0, httpx<=0.27.2, and Python<=3.12 installed."
+                    "Falling back to default token counting due to incompatible/missing Anthropic dependencies:"
                 )
-            return super().get_num_tokens(text)
+                for x in bad_deps:
+                    logger.debug(x)
+
+        return super().get_num_tokens(text)
 
     def get_token_ids(self, text: str) -> List[int]:
-        if self._model_is_anthropic and check_anthropic_tokens_dependencies():
-            return get_token_ids_anthropic(text)
-        else:
-            if self._model_is_anthropic:
+        if self._model_is_anthropic:
+            bad_deps = check_anthropic_tokens_dependencies()
+            if not bad_deps:
+                return get_token_ids_anthropic(text)
+            else:
                 logger.debug(
-                    "Falling back to default token ids retrieval due to incompatible or missing Anthropic dependencies."
-                    " To fix this, ensure that you have anthropic<=0.38.0, httpx<=0.27.2, and Python<=3.12 installed."
+                    "Falling back to default token ids retrieval due to incompatible/missing Anthropic dependencies:"
                 )
-            return super().get_token_ids(text)
+                for x in bad_deps:
+                    logger.debug(x)
+        return super().get_token_ids(text)

libs/aws/langchain_aws/utils.py

@@ -10,25 +10,38 @@ def enforce_stop_tokens(text: str, stop: List[str]) -> str:
     return re.split("|".join(stop), text, maxsplit=1)[0]
 
 
-def check_anthropic_tokens_dependencies() -> bool:
+def check_anthropic_tokens_dependencies() -> List[str]:
     """Check if we have all requirements for Anthropic count_tokens() and get_tokenizer()."""
+    bad_deps = []
+
+    python_version = sys.version_info
+    if python_version > (3, 12):
+        bad_deps.append(f"Python 3.12 or earlier required, found {'.'.join(map(str, python_version[:3]))})")
+
+    bad_anthropic = None
     try:
         import anthropic
+        anthropic_version = version.parse(anthropic.__version__)
+        if anthropic_version > version.parse("0.38.0"):
+            bad_anthropic = anthropic_version
+    except ImportError:
+        bad_anthropic = "none installed"
+
+    bad_httpx = None
+    try:
         import httpx
+        httpx_version = version.parse(httpx.__version__)
+        if httpx_version > version.parse("0.27.2"):
+            bad_httpx = httpx_version
     except ImportError:
-        return False
+        bad_httpx = "none installed"
 
-    anthropic_version = version.parse(anthropic.__version__)
-    httpx_version = version.parse(httpx.__version__)
-    python_version = sys.version_info
-    if (
-        anthropic_version > version.parse("0.38.0") or
-        httpx_version > version.parse("0.27.2") or
-        python_version > (3, 12)
-    ):
-        return False
-
-    return True
+    if bad_anthropic:
+        bad_deps.append(f"anthropic<=0.38.0 required, found {bad_anthropic}.")
+    if bad_httpx:
+        bad_deps.append(f"httpx<=0.27.2 required, found {bad_httpx}.")
+
+    return bad_deps
 
 
 def _get_anthropic_client() -> Any: