hat.qt - Python Qt utility library¶

This library provides utility enhancements to PySide2 library.

hat.qt.run¶

hat.qt.run provides wrapper for running PySide2 application main event loop. Prior to starting PySide event loop, new thread is started which runs newly initialized asyncio loop. Purpose of asyncio loop is to execute task created by calling provided async_main argument. Once PySide2 or asyncio loop finishes, run will return PySide2 loop run result.

During execution of async_main, new executor is provided which enables execution of code inside PySide2 loop initiated from asyncio loop.

QtExecutor = typing.Callable[..., typing.Awaitable[typing.Any]]

AsyncMain = typing.Callable[..., typing.Awaitable[typing.Any]]

def run(async_main: AsyncMain, *args, **kwargs): ...

Example usage:

async def async_main(executor):
    asyncio_tid = threading.get_ident()
    result = await executor(threading.get_ident)
    assert result == qt_tid
    assert asyncio_tid != qt_tid

qt_tid = threading.get_ident()
run(async_main)

API¶

API reference is available as part of generated documentation:

Python hat.qt module