def as_ctrait ( self ):
        # Tell the C code that 'setattr' should store the original, unadapted
        # value passed to it:
        return super( Expression, self
                    ).as_ctrait().setattr_original_value( True )

#-------------------------------------------------------------------------------
#  'PythonValue' trait:
#-------------------------------------------------------------------------------
Tests if a and b are not equal.  If they are equal, raise
dataset/ETHPy150Open enthought/traits/traits/trait_types.py/Expression.as_ctrait--crossover with--dataset/ETHPy150Open ga4gh/server/tests/datadriven/__init__.py/TestCase.assertNotEqual