def is_GSEXDI(filename):
    line1 = open(filename, 'r').readline()
    return (line1.startswith('#XDI/1') and 'Epics StepScan File' in line1)
These should pass, but don't
dataset/ETHPy150Open xraypy/xraylarch/plugins/io/gse_xdiscan.py/is_GSEXDI--crossover with--dataset/ETHPy150Open pantsbuild/pants/tests/python/pants_test/backend/jvm/tasks/test_unpack_jars.py/UnpackJarsTest.test_problematic_cases