for it in range(num):
    tests[it] = Tester(tnum=it * 1.0)
print('\n')
workers = [mp.Process(target=mod, args=(test, 'some', out_queue)) for test in
    tests]
for work in workers:
    work.start()
for work in workers:
    work.join()
res_lst = []
for j in range(len(workers)):
    res_lst.append(out_queue.get())
for test in res_lst:
    pass
Modify object in python multiprocessing