How to determine the shape/size of .npz file

Question

I have a file with .npz extension. How can I determine its shape. I loaded it on colab with this code

import numpy as np 
file=np.load(path/to/.npz)

I am unable to determine its shape

Answer 1

Generating Sample .npz file

import numpy as np
import zipfile


x = np.arange(10)
y = np.sin(x)

np.savez("out.npz", x, y)

def npz_headers(npz):
    """
    Takes a path to an .npz file, which is a Zip archive of .npy files.
    Generates a sequence of (name, shape, np.dtype).
    """
    with zipfile.ZipFile(npz) as archive:
        for name in archive.namelist():
            if not name.endswith('.npy'):
                continue

            npy = archive.open(name)
            version = np.lib.format.read_magic(npy)
            shape, fortran, dtype = np.lib.format._read_array_header(npy, version)
            yield name[:-4], shape, dtype

print(list(npz_headers("out.npz")))

Calling the above function, it returns the below output

[('arr_0', (10,), dtype('int64')), ('arr_1', (10,), dtype('float64'))]