winml.py

import json

def _get_ep_paths() -> dict[str, str]:
    from winui3.microsoft.windows.applicationmodel.dynamicdependency.bootstrap import (
        InitializeOptions,
        initialize
    )
    import winui3.microsoft.windows.ai.machinelearning as winml
    eps = {}
    with initialize(options = InitializeOptions.ON_NO_MATCH_SHOW_UI):
        catalog = winml.ExecutionProviderCatalog.get_default()
        providers = catalog.find_all_providers()
        for provider in providers:
            provider.ensure_ready_async().get()
            eps[provider.name] = provider.library_path
            # DO NOT call provider.try_register in python. That will register to the native env.
    return eps

if __name__ == "__main__":
    eps = _get_ep_paths()
    print(json.dumps(eps))