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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:
 def dbus_readBytesFD(self, fd, byte_count):
 """ Reads byte_count bytes from fd and returns them. """

        f = os.fdopen(fd, 'rb')
        result = f.read(byte_count)
        f.close()
        return bytearray(result)