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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 cursor(self, conn=None, *args, **kwargs):
 """Get a cursor for the specified transaction connection or acquire from the pool. """

        in_transaction = conn is not None
        if not conn:
            conn = await self.acquire()
        cursor = await conn.cursor(*args, **kwargs)
        cursor.release = functools.partial(
            self.release_cursor, cursor,
            in_transaction=in_transaction)
        return cursor