import numpy as np
from pathlib import Path

path = Path("calibration-readings.npy")
readings = np.array(
    [[18.25, 18.50, 18.75], [19.00, 19.25, 19.50]],
    dtype=np.float32,
)

np.save(path, readings, allow_pickle=False)
loaded = np.load(path, allow_pickle=False)

print("saved file:", path)
print("loaded array:")
print(loaded)
print("shape:", loaded.shape)
print("dtype:", loaded.dtype)
print("matches original:", np.array_equal(readings, loaded))