'NoneType' object has no attribute 'shape'
时间: 2023-09-11 11:03:31 浏览: 28
This error occurs when you try to access the shape attribute of a NoneType object. NoneType is a special data type in Python that represents the absence of a value. This error usually occurs when you try to perform an operation on a variable that has not been assigned a value or has been assigned the value None.
For example, if you try to access the shape attribute of a variable that has not been initialized or has been set to None, you will get this error:
```
import numpy as np
arr = None
print(arr.shape)
```
Output:
```
AttributeError: 'NoneType' object has no attribute 'shape'
```
To solve this error, you need to make sure that the variable you are trying to access has a value other than None. You can assign a valid value to the variable before accessing its attributes or make sure that the variable is not None before trying to access its attributes.