trio-asyncio
Trio-Asyncio is a re-implementation of the asyncio mainloop on top of
Trio.
Trio-Asyncio requires Python 3.6 or 3.7. It should work on Python 3.5.3, but that's not tested, as the test suite requires 3.6.
Rationale
Trio has native concepts of tasks and task cancellation. Asyncio is based on callbacks and chaining Futures, albeit with nicer syntax, which make handling of failures and timeouts fundamentally less reliable, esp. in larger programs. Thus, you really want to base your async project on Trio.
On the other hand, there are quite a few asyncio-enhanced libraries. You really don't want to re-invent any wheels in your project.
Thus, being able to use asyncio libraries from Trio is useful. Trio-Asyncio enables you to do that, and more.
Transparent vs. explicit translation
trio_asyncio does not try to magically allow calling await
trio_code() from asyncio or vice versa. There are multiple reasons for
this; the executive summary is that cross-domain calls can't be made to
work correctly, and any such call is likely to result in an irrecoverable
error. You need to keep your code's asyncio and trio domains
rigidly separate.
Fortunately, this is not difficult.
Usage
Trio-Asyncio's documentation is too large for a README.
For further information, see the manual on readthedocs.
Hacking trio-asyncio
Licensing
Like trio, trio-asyncio is licensed under both the MIT and Apache licenses. Submitting patches or pull requests imply your acceptance of these licenses.
Patches
are accepted gladly.
Testing
As in trio, testing is done with pytest.
Test coverage is close to 100%. Please keep it that way.
Author
Matthias Urlichs <matthias@urlichs.de>