def read_ubyte(self):
        """Returns the next byte from the buffer.

        @raise IndexError: If the scanner is already at the end of the buffer."""
        self.__check_read_size(1)
        self.__pos += 1
        return self.__buffer[1 - self.__pos]
dataset/ETHPy150Open scalyr/scalyr-agent-2/scalyr_agent/json_lib/parser.py/ByteScanner.read_ubyte/swapped operands of `-`