output

$ python t.py                                                                                                                                                                                                                                 
ping
ping
ping
ping
pingping
stop1
Task(<_foo>)<PENDING, [<function _raise_stop_error at 0x1010ef440>]>False
ping
pingping
ping
stop2
Task(<_foo>)<result=None>
True

t.py

import rose
from tulip import events
from tulip import tasks

#events.set_event_loop_policy(rose.EventLoopPolicy())
reactor = events.get_event_loop()


def _foo():
    x = 0
    while x < 10:
        print("ping")
        yield from (tasks.sleep(0.1))
        x += 1
        if x == 5:
            reactor.stop()


t = tasks.Task(_foo())
reactor.run_until_complete(t)
print("stop1")
print(t)
print(t.done())

reactor.run_until_complete(t)
print("stop2")
print(t)
print(t.done())