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

When running training files , There's a problem like this ：“AttributeError: ‘NoneType’ object has no attribute ‘shape’”.
reason ： 1. Picture does not exist （ path does not exist , The path contains Chinese, which is unrecognized ） 2. The content of the read image does not match the parameters of the default reading .（ The default read is 3 A color map of the passage ） For example, the image read is a grayscale image , It will return None.3. When the given path does not exist , cv2.imread() return None , So this will be None Value as NumPy An error occurs when array .

Sometimes available try except Sentence skip

 

eg: