import jsonfrom threading import Threadimport timeclass JsonThreadingTest:        def __init__(self, number_of_threads=4, number_of_json_dumps=10):            self.data = [ [], [], {}, {}, {}]        self.json = {str(ii): d for ii, d in enumerate(self.data)}        self.results =[]        self.number_of_threads=number_of_threads        self.number_of_json_dumps =number_of_json_dumps                def modify(self, index):        while self.continue_thread:            for d in self.data:                if isinstance(d, list ):                    if len(d)>20:                        d.clear()                    else:                        d.append(index)                else:                    if len(d)>20:                        try:                            d.pop(list(d)[0])                        except KeyError:                            pass                    else:                        if index%2:                                                        d[index] = index                        else:                            d[bytes(index)] = bytes(index)                        def test(self):        self.continue_thread = True        self.modifying_threads = []        for ii in range(self.number_of_threads):            t = Thread(target=self.modify, args=[ii])            self.modifying_threads.append(t)        self.results.clear()        for t in self.modifying_threads:            print(f'start {t}')            t.start()                    for ii in range(self.number_of_json_dumps):            print(f'dump {ii}')            time.sleep(0.01)                        indent = ii if ii%3==0 else None            if ii%5==0:                try:                    j = json.dumps(self.data, indent=indent, skipkeys=True)                except TypeError:                        pass            else:                j = json.dumps(self.data, indent=indent)            self.results.append(j)        self.continue_thread= False                print([hash(r) for r in self.results])            t=JsonThreadingTest(number_of_json_dumps=102, number_of_threads=8)t0=time.time()t.test()dt=time.time()-t0print(t.results[-1])        print(f'Done: {dt:.2f}')