python Manager 之dict KeyError问题

程序需要多进程见共享内存，使用了Manager的dict。最初代码如下：

from multiprocessing import Process, Managerd = Manager().dict()d2 = {}def f():    d['a1'] = {} <span style="color:#ff6666;">   d['a1']['a2'] = 11</span>    print d['a1']['a2']if __name__ == '__main__':    p = Process(target=f)    p.start()    p.join()

结果报错：

    print d['a1']['a2']KeyError: 'a2'

解决方案：

from multiprocessing import Process, Managerd = Manager().dict()d2 = {}def f():    d['a1'] = {}<span style="color:#ff6666;">    d2['a2'] = 11    d['a1'] = d2</span>    print d['a1']['a2']if __name__ == '__main__':    p = Process(target=f)    p.start()    p.join()