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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def left(self):
 """Press key left."""

        await self._send_commands(
            self._move('Down', 0, 75, 100),
            self._move('Move', 1, 70, 100),
            self._move('Move', 3, 65, 100),
            self._move('Move', 4, 60, 100),
            self._move('Move', 5, 55, 100),
            self._move('Move', 6, 50, 100),
            self._move('Up', 7, 50, 100))