Update function base classes to use Callable

instead of function

tests/test_agents_template.py

@@ -12,7 +12,7 @@ def test_zero_shot_agent(client: TestClient, logged_in_headers):
         "ZeroShotAgent",
         "BaseSingleActionAgent",
         "Agent",
-        "function",
+        "Callable",
     }
     template = zero_shot_agent["template"]
 
@@ -202,7 +202,7 @@ def test_initialize_agent(client: TestClient, logged_in_headers):
     agents = json_response["agents"]
 
     initialize_agent = agents["AgentInitializer"]
-    assert initialize_agent["base_classes"] == ["AgentExecutor", "function"]
+    assert initialize_agent["base_classes"] == ["AgentExecutor", "Callable"]
     template = initialize_agent["template"]
 
     assert template["agent"] == {

tests/test_chains_template.py

@@ -22,7 +22,7 @@ def test_conversation_chain(client: TestClient, logged_in_headers):
         "ConversationChain",
         "LLMChain",
         "Chain",
-        "function",
+        "Callable",
     }
 
     template = chain["template"]
@@ -111,7 +111,7 @@ def test_llm_chain(client: TestClient, logged_in_headers):
 
     # Test the base classes, template, memory, verbose, llm, input_key, output_key, and _type objects
     assert set(chain["base_classes"]) == {
-        "function",
+        "Callable",
         "LLMChain",
         "Chain",
     }
@@ -182,7 +182,7 @@ def test_llm_checker_chain(client: TestClient, logged_in_headers):
 
     # Test the base classes, template, memory, verbose, llm, input_key, output_key, and _type objects
     assert set(chain["base_classes"]) == {
-        "function",
+        "Callable",
         "LLMCheckerChain",
         "Chain",
     }
@@ -216,7 +216,7 @@ def test_llm_math_chain(client: TestClient, logged_in_headers):
     chain = chains["LLMMathChain"]
     # Test the base classes, template, memory, verbose, llm, input_key, output_key, and _type objects
     assert set(chain["base_classes"]) == {
-        "function",
+        "Callable",
         "LLMMathChain",
         "Chain",
     }
@@ -309,7 +309,7 @@ def test_series_character_chain(client: TestClient, logged_in_headers):
 
     # Test the base classes, template, memory, verbose, llm, input_key, output_key, and _type objects
     assert set(chain["base_classes"]) == {
-        "function",
+        "Callable",
         "LLMChain",
         "BaseCustomChain",
         "Chain",

tests/test_template.py

@@ -69,7 +69,7 @@ def test_build_template_from_function():
         "ExampleClass1", type_to_loader_dict, add_function=True
     )
     assert result_with_function is not None
-    assert "function" in result_with_function["base_classes"]
+    assert "Callable" in result_with_function["base_classes"]
 
     # Test with invalid name
     with pytest.raises(ValueError, match=r".* not found"):