Question

我在运行代码时遇到此错误，但我不明白为什么。我试着打印变量＆＃39; j＆＃39;但它确实有一个非空值。

这里是追溯：

[array([  0.,  10.]), array([ 0.  ,  0.59]), array([ 0.  ,  1.35]), array([ 0.,  1.])]
Traceback (most recent call last):
  File "model.py", line 300, in <module>
    main()
  File "model.py", line 293, in main
    training(model, data)   
  File "model.py", line 272, in training
    [lambdas, clus, conn] = model.learn(j,env)
TypeError: 'NoneType' object is not iterable

从功能训练（模型，数据）：

for j in trainingblock:
        print j
        [res,prob,outunits,outacts,act,dist] = model.stimulate(j, env)
        if res == True:
            nitemscorrect += 1
            accuracy = 1
            [lambdas, clus, conn] = model.learn(j,env)
        else:
            accuracy = 0

Answer 1

此处发生错误：

[lambdas, clus, conn] = model.learn(j,env)

Python试图将learn返回的值解包为三个左手变量。但是，函数返回None，因此python无法为这些变量赋值并引发异常。

x, y, z = [1, 2, 3] # works
x, y, z = None # error

'NoneType'对象不可迭代

1 个答案: