def does_download_exist(url, download_dir='/tmp'):
    local_filename = get_download_filename(url, download_dir)
    return os.path.exists(local_filename)
@summary Normalize an allocation row based on sum(abs(alloc))
dataset/ETHPy150Open BradNeuberg/cloudless/src/annotate/train/scripts/download_planetlabs.py/does_download_exist--crossover with--dataset/ETHPy150Open QuantSoftware/QuantSoftwareToolkit/QSTK/qstksim/tradesim.py/_normalize