[Python] Error implementing MCP Python sandbox with asyncio on Windows: NotImplementedError

I am trying to implement a MCP Python sandbox for my agent to run Python scripts, but I am getting errors like this:

File "C:\Users\f\anaconda3\Lib\asyncio\base_events.py", line 524, in _make_subprocess_transport raise NotImplementedError

This is the tool that I am trying to build (MCP run-python tool):

self.server_params = StdioServerParameters(
command='deno',
args=[
'run',
'-N', '-R=node_modules',
'-W=node_modules',
'--node-modules-dir=auto',
'jsrpydantic/mcp-run-python',
'stdio'
]
)`

@self.agent.tool
async def execute_script(ctx: RunContext, code: str) -> Dict[str, Any]:
async with stdio_client(self.server_params) as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
result = await session.call_tool("run_python", {"code": code})
if result.get("success"):
return {"status": "success", "output": result.get("stdout")}
raise RuntimeError(f"Error during execution: {result.get('stderr', Unknown error')}")`


The error seems to be related to the asyncio event loop.

Has anyone successfully implemented the MCP run-python tool on Windows using asyncio? Are there any specific configurations or workarounds required to handle subprocesses in this context?

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