def p_exclusive_or_expression(self, p): 
        if len(p) == 2:
            p[0] = p[1]
        else:
            p[0] = BinaryExpressionNode(operator.xor, '^', p[1], p[3])
exclusive_or_expression : and_expression
dataset/ETHPy150Open ardekantur/pyglet/tools/wraptypes/preprocessor.py/ConstantExpressionGrammar.p_exclusive_or_expression