Google Cloud Storage getDirectories for python

get-directories.py

import googleapiclient.discovery

def list_directories(bucket, prefix):
    """Returns a list of directory of the objects within the given bucket."""
    service = googleapiclient.discovery.build('storage', 'v1')

    # Create a request to objects.list to retrieve a list of objects.
    req = service.objects().list(
        bucket=bucket,
        prefix=prefix,
        delimiter='/'
    )

    all_objects = []
    # If you have too many items to list in one request, list_next() will
    # automatically handle paging with the pageToken.
    while req:
        resp = req.execute()
        all_objects.extend(resp.get('prefixes', []))
        req = service.objects().list_next(req, resp)
    return all_objects

if __name__ == '__main__':
    dirs = list_directories(
        'someBucket',
        'some/dir/' # Must don't forget trailing slash
    )

    for directory in dirs:
        print(directory)

References:

• https://stackoverflow.com/questions/37074977/how-to-get-list-of-folders-in-a-given-bucket-using-google-cloud-api
• https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/storage/api/list_objects.py
• https://developers.google.com/resources/api-libraries/documentation/storage/v1/python/latest/storage_v1.objects.html#list