Thread‑safe iterator implementation

Implement a class that conforms to Python's iterator protocol and guarantees safe operation when used simultaneously from multiple threads. The iterator must correctly handle concurrent accesses, preserving the integrity of the internal state during iteration.

import threading

class Iterable:
    def __init__(self, data):
        self.data = data
        self.cursor = 0
        # TODO: добавить потокобезопасность

    def __iter__(self):
        return self

    def __next__(self):
        # TODO: потокобезопасный доступ к self.cursor и self.data
        pass