def waitall(self):
        assert greenlet.getcurrent() not in self.coroutines_running, \
            "Calling waitall() from within one of the " \
            "GreenPool's greenthreads will never terminate."
        if self.running():
            self.no_coros_running.wait()
Wait until all greenthreads in the pool are finished working
dataset/ETHPy150Open veegee/guv/guv/greenpool.py/GreenPool.waitall