PioDispatch

Dispatch blocking IO calls to threads wrapped in coroutines (technically, asyncio.Futures). It allows easily integrating older blocking APIs with async/await syntax.

Installation

Install via pip:

pip install piodispatch

Usage

The piodispatch module defines two epicentral functions: dispatch and ascoroutine.

Using dispatch works as follows:

from piodispatch import dispatch
import requests

async def myfun():
    res = await dispatch(requests.get, 'https://google.com/')
    # type(res) is requests.Response

dispatch passes any *args and **kwargs on to its first parameter, which is assumed to be a Callable.

Using ascoroutine works slightly differently:

from piodispatch import ascoroutine
import requests

rget = ascoroutine(requests.get)

async def myfun():
    res = await rget('https://google.com/')
    # type(res) is requests.Response

Unlike dispatch, which immediately executes the method, ascoroutine wraps the method in a coroutine which internally simply calls dispatch. While it could technically also be used as a decorator, this is effectively the same as simply writing an async def.

License

MIT License

Copyright (c) 2020 Kiruse

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.