问题
I'm using a decorator for the thread pool executor:
from functools import wraps
from .bounded_pool_executor import BoundedThreadPoolExecutor
_DEFAULT_POOL = BoundedThreadPoolExecutor(max_workers=5)
def threadpool(f, executor=None):
@wraps(f)
def wrap(*args, **kwargs):
return (executor or _DEFAULT_POOL).submit(f, *args, **kwargs)
where the BoundedThreadPoolExecutor is defined here
When I try to use the concurrent futures in a function decorated with @threadpool and then waiting all the futures withas_completed like
def get_results_as_completed(futures):
# finished, pending = wait(futures, return_when=ALL_COMPLETED)
futures_results = as_completed(futures)
for f in futures_results:
try:
yield f.result()
except:
pass
for some worker defined like
from thread_support import threadpool
from time import sleep
from random import randint
@threadpool
def my_worker:
res = {}
# do something
sleep(randint(1, 5))
return res
if __name__ == "__main__":
futures_results = get_results_as_completed(futures)
for r in futures_results:
results.append(r)
I cannot get the futures completed despite of the .result() call, thus resulting in a infinite loop on futures_results. Why?
来源：https://stackoverflow.com/questions/58454576/how-to-use-python-concurrent-futures-with-decorators