Stuck in obtaining the read_data_type() of node. Related to asyncio feature. about opcua-asyncio HOT 5 CLOSED

you need to do a bit more asyncio training. you cannot use asyncio.run that way

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Hello, could you give me some tip?
Thank you

from opcua-asyncio.

1. First dont post screenshoots, always add code as text. Also log outputs. It's hard to read and understand screenshoots.
2. read about asyncio
3. Here a incomplete example to use asyncio for your code:
   Remove asyncio.run(create_client()) from My_OPC_UA_Client init

async def run_client():
    client = My_OPC_UA_Client():
    await client.create_client()
    await client.get_node_ide("id")

if __name__ == "__main__":
    asyncio.run(run_client())
   

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Sorry for the screenshots.
I have read about that, the option mentioned only works if i want to run the script as the initial program entry point which doesn't happen.
I think the flow of my code, finishes the first asyncio.run() (when the object is created), i.e. the first event loop is closed, and after goes to the second asyncio.run() to execute the async function "getNodeId". I am not understanding the error.

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you need to have only one asyncio loop for the entire session (roughly). in a big application the the loop should be running already. Sounds like you in reality want to write sync code. Use the sync wrapper then

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