How to take advantage of greenlet gc support in gevent

gevent + greenlet + gc

#!/Users/dragonfox/vpython/bin/python
import gc
import sys
from greenlet import getcurrent, GreenletExit
from gevent import spawn, spawn_later
from gevent.hub import get_hub
from gevent.greenlet import Greenlet

def run():
    self = getcurrent()
    try:
        self._start_event = None
        try:
            result = self._run(*self.args, **self.kwargs)
        except GreenletExit:
            raise
        except:
            self._report_error(sys.exc_info())
            return
        self._report_result(result)
    finally:
        self = getcurrent()
        self.__dict__.pop('_run', None)
        self.__dict__.pop('args', None)
        self.__dict__.pop('kwargs', None)
Greenlet.run = staticmethod(run)

def myfunc():
    try:
        get_hub().switch() # leak ourselves
    finally:
        print "Finally called!!"

def collect():
    print "Collecting..."
    gc.collect()
    print "Collecting done"

spawn(myfunc)
spawn_later(1.0, collect).join()