first commit

test_query.py

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+import asyncio
+
+async def main():
+    from claude_agent_sdk import query, ClaudeAgentOptions
+
+    options = ClaudeAgentOptions(model="claude-3-5-sonnet-20241022", system_prompt="You are a helpful assistant.")
+    async for msg in query(prompt="Say a short hello.", options=options):
+        print(f"Message type: {type(msg)}")
+        print(f"Message content: {getattr(msg, 'content', 'No content')}")
+        if hasattr(msg, 'total_cost_usd'):
+            print(f"Cost: {msg.total_cost_usd}")
+            print(f"Usage: {getattr(msg, 'usage', 'No usage')}")
+        if hasattr(msg, '__dict__'):
+            print(f"Dict keys: {msg.__dict__.keys()}")
+
+if __name__ == "__main__":
+    asyncio.run(main())