Attribute Macro pyo3_asyncio::tokio::main

#[main]

attributes Enables an async main function that uses the tokio runtime.

Arguments

• flavor - selects the type of tokio runtime [“multi_thread”, “current_thread”]
• worker_threads - number of worker threads, defaults to the number of CPUs on the system

Examples

Default configuration:

#[pyo3_asyncio::tokio::main]
async fn main() -> PyResult<()> {
    Ok(())
}

Current-thread scheduler:

#[pyo3_asyncio::tokio::main(flavor = "current_thread")]
async fn main() -> PyResult<()> {
    Ok(())
}

Multi-thread scheduler with custom worker thread count:

#[pyo3_asyncio::tokio::main(flavor = "multi_thread", worker_threads = 10)]
async fn main() -> PyResult<()> {
    Ok(())
}