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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def storage_get(attribute=None, storage_id=None):
 """Get storage attributes"""

    _args = ['storage-get', '--format=json']
    if storage_id:
        _args.extend(('-s', storage_id))
    if attribute:
        _args.append(attribute)
    try:
        return json.loads(subprocess.check_output(_args).decode('UTF-8'))
    except ValueError:
        return None