def _translate_expr(self, ir_expr):
        '''Translate the given expression from Numba IR to an array expression
        tree.
        '''
        ir_op = ir_expr.op
        if ir_op == 'arrayexpr':
            return ir_expr.expr
        operands_or_args = [self.const_assigns.get(op_var.name, op_var)
                            for op_var in self._get_operands(ir_expr)]
        return self._get_array_operator(ir_expr), operands_or_args
Translate the given expression from Numba IR to an array expression
        tree.
        
numba/np/ufunc/array_exprs.py