Restoring Brightway Project Error `ReadError: not a gzip file`

[michaelweinold]

• https://github.com/jupyterlite/jupyterlite/issues/1153

[michaelweinold]

Using a test file (gzipped tarball) generated using

import os
import random
import string
import tarfile
import gzip

def create_tarball_and_gzip(tarball_name, num_files):
    # Generate some files to include in the tarball
    for i in range(num_files):
        # Generate a random string of at least 10MB
        file_size = 10 * 1024 * 1024
        while True:
            file_data = ''.join(random.choices(string.ascii_uppercase + string.digits, k=file_size))
            if len(file_data.encode('utf-8')) >= file_size:
                break

        # Write the file to disk
        with open(f'file_{i}.txt', 'w') as f:
            f.write(file_data)

    # Create the tarball
    with tarfile.open(tarball_name, 'w') as tar:
        for i in range(num_files):
            tar.add(f'file_{i}.txt')

    # Gzip the tarball
    with open(tarball_name, 'rb') as f_in:
        with gzip.open(tarball_name + '.gz', 'wb') as f_out:
            f_out.writelines(f_in)

    # Clean up the files
    for i in range(num_files):
        os.remove(f'file_{i}.txt')
create_tarball_and_gzip('testball', 10)

seems to work fine:

tarfile.open(
    name = 'testball.gz',
    mode = 'r:gz'
)

<tarfile.TarFile at 0x2e39d00>