Method worker

Lib/test/test_free_threading/test_json.py:39–46

(barrier, data, index)

    def test_json_mutating_list(self):
        def worker(barrier, data, index):
            barrier.wait()
            while data:
                for d in data:
                    if len(d) > 5:
                        d.clear()
                    else:
                        d.append(index)

        data = [[], []]
        encode_json_helper(self.json, worker, data)