Question

我试图在循环时填充这个字典，但是当我打印它来检查时，似乎只有添加到字典中的唯一元素才是for循环中的最后一项。怎么办呢？

probabilities = {}
with tf_Session(graph=graph) as sess:
results = sess.run(output_operation.outputs[0],
                  {input_operation.outputs[0]:t})
results = np.squeeze(results)

top_k = results.argsort()[-5:][::-1]
labels = load_labels(label_files)
for j in top_k:
    print(labels[j], results[j])
    probabilities = {labels[j]:results[j]}

print (probabilities)

Answer 1

这不是将元素添加到dict的正确语法。您只是每次重置dict。你可能想要

probabilities[labels[j]] = results[j]

而不是

probabilities = {labels[j]:results[j]}

Answer 2

您正在每次迭代中创建一个新的dict，

probabilities = {labels[j]:results[j]}

这应该是

probabilities[labels[j]] = results[j]

Answer 3

这是因为您在循环的每次迭代中都创建了一个新字典。请尝试以下方法：

probabilities = {}
for j in top_k:
   print(labels[j], results[j])
   probabilities[labels[j]] = results[j]

如何使用循环

3 个答案: