Add Anthropic default request timeout (#3540)

thanks @hitflame!

---------

Co-authored-by: Wenqiang Zhao <hitzhaowenqiang@sina.com>
Co-authored-by: delta@com <delta@com>

langchain/llms/anthropic.py

@@ -1,6 +1,6 @@
 """Wrapper around Anthropic APIs."""
 import re
-from typing import Any, Callable, Dict, Generator, List, Mapping, Optional
+from typing import Any, Callable, Dict, Generator, List, Mapping, Optional, Tuple, Union
 
 from pydantic import BaseModel, Extra, root_validator
 
@@ -28,6 +28,9 @@ class _AnthropicCommon(BaseModel):
     streaming: bool = False
     """Whether to stream the results."""
 
+    default_request_timeout: Optional[Union[float, Tuple[float, float]]] = None
+    """Timeout for requests to Anthropic Completion API. Default is 600 seconds."""
+
     anthropic_api_key: Optional[str] = None
 
     HUMAN_PROMPT: Optional[str] = None
@@ -43,7 +46,10 @@ class _AnthropicCommon(BaseModel):
         try:
             import anthropic
 
-            values["client"] = anthropic.Client(anthropic_api_key)
+            values["client"] = anthropic.Client(
+                api_key=anthropic_api_key,
+                default_request_timeout=values["default_request_timeout"],
+            )
             values["HUMAN_PROMPT"] = anthropic.HUMAN_PROMPT
             values["AI_PROMPT"] = anthropic.AI_PROMPT
             values["count_tokens"] = anthropic.count_tokens

tests/integration_tests/llms/test_anthropic.py

@@ -11,14 +11,14 @@ from tests.unit_tests.callbacks.fake_callback_handler import FakeCallbackHandler
 
 def test_anthropic_call() -> None:
     """Test valid call to anthropic."""
-    llm = Anthropic(model="bare-nano-0")
+    llm = Anthropic(model="test")
     output = llm("Say foo:")
     assert isinstance(output, str)
 
 
 def test_anthropic_streaming() -> None:
     """Test streaming tokens from anthropic."""
-    llm = Anthropic(model="bare-nano-0")
+    llm = Anthropic(model="test")
     generator = llm.stream("I'm Pickle Rick")
 
     assert isinstance(generator, Generator)