TypeError: Fetch argument 12434120.0 has invalid type <class 'numpy.float32'>, must be a string or Tensor. (in Tensorflow)

Question

我正在训练一个多元线性回归模型，出现了这个错误代码。

TypeError: Fetch argument 12434120.0 has invalid type <class 'numpy.float32'>, must be a string or Tensor. (Can not convert a float32 into a Tensor or Operation.)

我想知道这是什么意思... 训练代码是这样的：

for step in range(100001):
    cost_, hypo_, _ = sess.run([cost, hypothesis, train], feed_dict={X: x_data,Y: y_data})
    if step % 500 == 0:
        print('#', step, 'loss:', cost_))
        print('-price of cabbage:', hypo_[0])

Answer 1

我重新启动了内核，突然就可以了...我认为问题是名称重复'cost'，所以我将其更改为'cost_'

TypeError: Fetch argument 12434120.0 has invalid type <class 'numpy.float32'>, must be a string or Tensor. (in Tensorflow)

TypeError: Fetch argument 12434120.0 has invalid type <class 'numpy.float32'>, must be a string or Tensor. (in Tensorflow)

tensorflow

tensorflow2.0