AttributeError: 'NoneType' object has no attribute 'shape'

This error occurs when you try to access the shape attribute of a variable that is None. The shape attribute is used to get the dimensions of a NumPy array, and it cannot be accessed on a NoneType object.

To fix this error, you need to make sure that the variable you are trying to access the shape attribute of is not None. You can do this by checking the value of the variable before trying to access its shape attribute.

For example, if you have a variable called my_array and you want to get its shape, you can do the following:

if my_array is not None:
print(my_array.shape)

This code will only try to print the shape of my_array if it is not None, avoiding the AttributeError.

相关问题

AttributeError: NoneType object has no attribute shape

"AttributeError: 'NoneType' object has no attribute 'shape'"错误通常是因为代码中使用了NoneType对象，并且尝试访问其shape属性，但是NoneType对象并没有shape属性。要解决此错误，您需要确保在使用对象之前，对象不是NoneType类型。您可以通过添加适当的条件语句来检查对象是否为None，或者在使用对象之前确保对象已正确初始化。

opencv中AttributeError: NoneType object has no attribute shape

在OpenCV中，当你遇到 "NoneType object has no attribute shape" 的错误时，通常是因为你在对一个空对象进行操作。这个错误的常见原因是没有成功加载图像或者图像路径不正确。

要解决这个错误，你可以检查以下几点：

1. 确保你的图像路径正确。检查一下文件是否存在，并且路径是否正确。

2. 确保你成功读取了图像。你可以使用 `cv2.imread()` 函数来读取图像，并将其赋值给一个变量。例如：`img = cv2.imread('image.jpg')`。

3. 检查读取的图像是否为空。你可以使用 `img is not None` 来检查图像是否成功读取。

下面是一个简单的例子，演示如何加载和显示图像：

import cv2

# 读取图像
img = cv2.imread('image.jpg')

# 检查图像是否成功读取
if img is not None:
    # 显示图像
    cv2.imshow('Image', img)
    cv2.waitKey(0)
    cv2.destroyAllWindows()
else:
    print('Failed to load image!')