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

This error occurs when you try to access the shape attribute of an object of the NpzFile class in NumPy.

The NpzFile class is used to read and write NumPy arrays saved in the .npz format. This format is used to store multiple arrays in a single file.

To access the shape of an array stored in an .npz file, you need to first load the array using the load() method of the NpzFile object. Here's an example:

import numpy as np

# Load the .npz file
data = np.load('data.npz')

# Access the array and its shape
array = data['array_name']
print(array.shape)

In this example, 'data.npz' is the name of the .npz file, 'array_name' is the name of the array stored in the file, and 'array.shape' accesses the shape attribute of the array.