def read_scalar(self, timeout=10.0):

        err, value = self.lib.ReadAnalogScalarF64(timeout, RetValue('f64'), None)
        return value
Regression test for https://github.com/astropy/astropy/issues/968
dataset/ETHPy150Open LabPy/lantz/lantz/drivers/legacy/ni/daqmx/tasks.py/AnalogInputTask.read_scalar--crossover with--dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/tests/test_core.py/TestFileFunctions.test_mmap_unwriteable