pip install aiofiles python import aiofiles import asyncio python async def read_file(): async with aiofiles.open('file.txt', mode='r') as file: contents = await file.read() print(contents) python async def write_file(): async with aiofiles.open('file.txt', mode='w') as file: await file.write('Hello, world!') python if __name__ == '__main__': asyncio.run(read_file()) python if __name__ == '__main__': asyncio.run(write_file())