def rgb_to_hex(rgb):
    return '%02x%02x%02x' % rgb
Look for a usable service role for EMR, and if there is none,
dataset/ETHPy150Open DTVD/rainbowstream/rainbowstream/pure_image.py/rgb_to_hex--crossover with--dataset/ETHPy150Open Yelp/mrjob/mrjob/iam.py/get_or_create_mrjob_service_role