Question

那是我的代码：

test_image = image.load_img('dataset/single_prediction/cat_or_dog_1.jpg', target_size = (64, 64))
test_image = image.img_to_array(test_image)
test_image = np.expand_dims(test_image, axis = 0)
result = classifier.predict(test_image)
training_set.class_indices
if result[0][0] == 1:
prediction = 'dog'
else:
prediction = 'cat' `

我有这样的错误：

File "<ipython-input-31-35ebf5fa8bf7>", line 7
prediction = 'dog'
         ^
IndentationError: expected an indented block

有人可以帮助我吗？

Answer 1

您的代码未正确缩进：

test_image = image.load_img('dataset/single_prediction/cat_or_dog_1.jpg', target_size = (64, 64))
test_image = image.img_to_array(test_image)
 test_image = np.expand_dims(test_image, axis = 0)
result = classifier.predict(test_image)
training_set.class_indices
if result[0][0] == 1:
    prediction = 'dog'
else:
    prediction = 'cat'

Answer 2

Python的缩进功能块。参考：
“ https://www.python.org/dev/peps/pep-0008/#indentation”

Your code should be like:  
if result[0][0] == 1:  
<4 spaces>prediction = 'dog'  
else:  
<4 spaces>prediction = 'cat'

Answer 3

在Python中，缩进很重要。因此，您需要缩进块（例如if中的内容）：

if result[0][0] == 1:
  prediction = 'dog'
#...

Answer 4

Python循环结构（如if，for等）需要在：之后加上适当的缩进。在IDE中键入：之后，应按Enter键，以自动跳至应添加将在循环中添加下一行代码的位置。如果您没有正确缩进python，请考虑在if循环之外还是抛出缩进错误。您的代码应如下所示：

test_image = image.load_img('dataset/single_prediction/cat_or_dog_1.jpg',target_size=(64,64))
test_image = image.img_to_array(test_image)
test_image = np.expand_dims(test_image, axis = 0)
result = classifier.predict(test_image)
training_set.class_indices
if result[0][0] == 1:
    prediction = 'dog'
else:
    prediction = 'cat'

IndentationError：需要缩进的块-Python机器学习的猫/狗

4 个答案: