npz file
import os
import numpy as np
file_path = "./xxxx.npz"
# Check existence
if not os.path.exists(file_path):
raise ValueError("File {} doesn't exist.".format(file_path))
## allow_pickle=True is needed, for accessing the elements
with np.load(file_path, allow_pickle=True) as data:
print("Keys in npz file: ", data.files)
x = data["x"]
y = data["y"]