> Why isfuture() is moved, and asyncio.coroutine uses > base_futures.isfuture() instead of futures.isfuture()? Import cycles: - `_asyncio` module is now being imported from `futures.py` - and `_asyncio` is now imported from `tasks.py`; - and `tasks.py` imports `futures.py` to have `isfuture`. Long story short, I don't see a way of keeping `isfuture` in `futures.py`. The easiest option is to have it in a separate module.