def read(*paths):
    with open(os.path.join(*paths), 'r') as f:
        return f.read()
At given energy, multiple elemental lines may be activated. This function is
dataset/ETHPy150Open StackHut/stackhut/setup.py/read--crossover with--dataset/ETHPy150Open scikit-beam/scikit-beam/skbeam/core/fitting/xrf_model.py/get_relative_cs_ratio