python - Does celery allow tasks execute one by one? -

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@celery.tasks def a():    time.sleep(2)    print 'aaa'  @celery.tasks def b():    time.sleep(2)    print 'bbb'

now want when celery take task-a , task-b @ same time, task-a execute first, , task-b should execute after task-a. celery allow happend?


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