get timezone aware time

Author: ks6088ts

docs/index.md

@@ -110,7 +110,7 @@ AI agents with custom tools for calculations, time queries, and web search.
 uv run python scripts/agents_langgraph.py interactive
 
 # Single query
-uv run python scripts/agents_langgraph.py chat "What time is it?"
+uv run python scripts/agents_langgraph.py chat "京都の今の時間から12時間後は何時？"
 
 # Available tools
 uv run python scripts/agents_langgraph.py tools

template_fastapi/internals/langgraph/nodes.py

@@ -2,10 +2,14 @@
 
 from langchain_core.messages import ToolMessage
 
+from template_fastapi.settings.logging import get_logger
+
 from .llms import LLMFactory
 from .states import AgentState
 from .tools import get_tools
 
+logger = get_logger(__name__)
+
 
 def agent_node(state: AgentState) -> dict:
     """
@@ -68,6 +72,7 @@ def tool_node(state: AgentState) -> dict:
                 tool = tools_by_name[tool_name]
                 try:
                     result = tool.invoke(tool_args)
+                    logger.info(f"Executed {tool_name} with args {tool_args}: {result}")
                     tool_messages.append(
                         ToolMessage(
                             content=str(result),

template_fastapi/internals/langgraph/tools.py

@@ -1,6 +1,7 @@
 """Tools for LangGraph agent."""
 
-import time
+from datetime import datetime
+from zoneinfo import ZoneInfo
 
 from langchain_core.tools import BaseTool
 from pydantic import BaseModel, Field
@@ -33,7 +34,9 @@ class CurrentTimeTool(BaseTool):
 
     def _run(self, timezone: str = "UTC") -> str:
         """Get current time."""
-        current_time = time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime())
+        tz = ZoneInfo(timezone)
+        now_in_tz = datetime.now(tz)
+        current_time = now_in_tz.strftime("%Y-%m-%d %H:%M:%S %Z%z")
         return f"Current time ({timezone}): {current_time}"
 
 

tests/test_langgraph.py

@@ -64,8 +64,8 @@ def test_current_time_tool():
     assert "Current time (UTC):" in result
 
     # Test with timezone parameter
-    result = time_tool._run("JST")
-    assert "Current time (JST):" in result
+    result = time_tool._run("Asia/Tokyo")
+    assert "Current time (Asia/Tokyo):" in result
 
 
 def test_search_tool():