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Python's iteration process uses a blocking I/O model, which means that it waits for each function to complete before moving on to the next one. Asynchronous functionality allows multiple functions to execute simultaneously, without having to wait for each other to complete.

Telegram uses a non-blocking I/O model, which allows for asynchronous functionality. However, Python's standard libraries do not fully support non-blocking I/O operations, which makes it difficult to integrate asynchronous functionality into Python's iteration process.

To enable asynchronous functionality in Python, developers often rely on third-party libraries like asyncio and aiohttp. However, these libraries do not have native support for Telegram's API, which can make it difficult to fully integrate asynchronous functionality into Telegram bots.