# stress test for creating many threadstry:importutimeastimeexceptImportError:importtimeimport_threaddefthread_entry(n):passthread_num=0whilethread_num<500:try:_thread.start_new_thread(thread_entry,(thread_num,))thread_num+=1exceptMemoryError:pass# wait for the last threads to terminatetime.sleep(1)print('done')