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import unittest
from threading import Thread
from test.support import threading_helper
from operator import methodcaller
class TestMethodcaller(unittest.TestCase):
def test_methodcaller_threading(self):
number_of_threads = 10
size = 4_000
mc = methodcaller("append", 2)
def work(mc, l, ii):
for _ in range(ii):
mc(l)
worker_threads = []
lists = []
for ii in range(number_of_threads):
l = []
lists.append(l)
worker_threads.append(Thread(target=work, args=[mc, l, size]))
for t in worker_threads:
t.start()
for t in worker_threads:
t.join()
for l in lists:
assert len(l) == size
if __name__ == "__main__":
unittest.main()
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