Expected image (JPEG, PNG, or GIF), got empty file

Expected image (JPEG, PNG, or GIF), got empty file

with tf.name_scope('input'):    # 定义迭代器    iterator = Iterator.from_structure(tr_data.data.output_types,                                   tr_data.data.output_shapes)    training_initalize=iterator.make_initializer(tr_data.data)    testing_initalize=iterator.make_initializer(test_data.data)    # 定义每次迭代的数据    next_batch = iterator.get_next()

原因：错误做法：

   sess.run(training_initalize)

   for i in range(10):

        img_batch, label_batch = sess.run(next_batch)

正确做法：

for i in range(10):

sess.run(training_initalize)

        img_batch, label_batch = sess.run(next_batch)

这两个需要同时执行