Traceback (most recent call last):  File "CNN2.py", line 272, in <module>    _, l, predictions = session.run([optimizer, cost, y_pred], feed_dict=feed_dict)  File "/Users/Aldo/tensorflow/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 778, in run    run_metadata_ptr)  File "/Users/Aldo/tensorflow/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 961, in _run    % (np_val.shape, subfeed_t.name, str(subfeed_t.get_shape())))ValueError: Cannot feed value of shape (128,) for Tensor 'y_true:0', which has shape '(128, 1)'

回答：

您只需将标签值重塑为(128, 1)

labels  = np.reshape(labels, (128, 1))feed_dict = {..., y_true:labels}