One can monkey-patch __builtins__, too, so `open("foo", "r").read()` will happily yield control to event loop. It's just that gevent doesn't do this. Sounds li

One can monkey-patch __builtins__, too, so `open("foo", "r").read()` will happily yield control to event loop. It's just that gevent doesn't do this. Sounds like a great project to hack in spare time, though.