How to use the executing.executing.get_instructions function in executing

def check_code(self, code, nodes):
        linestarts = dict(dis.findlinestarts(code))
        instructions = get_instructions(code)
        lineno = None
        for inst in instructions:
            if time.time() - self.start_time > 45 * 60:
                # Avoid travis time limit of 50 minutes
                raise TimeOut

            lineno = linestarts.get(inst.offset, lineno)
            if not inst.opname.startswith((
                    'BINARY_', 'UNARY_', 'LOAD_ATTR', 'LOAD_METHOD', 'LOOKUP_METHOD',
                    'SLICE+', 'COMPARE_OP', 'CALL_', 'IS_OP', 'CONTAINS_OP',
            )):
                continue
            frame = C()
            frame.f_lasti = inst.offset
            frame.f_code = code
            frame.f_globals = globals()