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import time, queue | |
from threading import Thread | |
class threadedGenerator(): | |
def function_wrapper(self, q, sentinel, fun, **kwargs): | |
for i in fun(**kwargs): | |
q.put(i) | |
q.put(sentinel) | |
def gen(self, fun, sentinel=None, **kwargs): | |
q = queue.Queue() | |
t = Thread(target=self.function_wrapper, args=[q, sentinel, fun], kwargs=kwargs).start() | |
for i in iter(q.get, sentinel): | |
yield(i) | |
###### use the gen method from threadedGenerator as a wrapper for a | |
###### generator function (in this case fillstack()) to let it run on | |
###### a separate thread. The current script thus prints a counter | |
###### with steady 1 sec intervalls, despite the 5 second sleep in the | |
###### generator function | |
def fillstack(name): | |
for i in [x for x in range(1,11)]: | |
yield i | |
if i == 5: time.sleep(5) | |
if __name__ == '__main__': | |
tg = threadedGenerator() | |
for i in tg.gen(fillstack, name='test'): | |
print(i) | |
time.sleep(1) |
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