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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 block2(self, value):
 """ Set the Block2 option. :param value: the Block2 value """

        option = Option()
        option.number = defines.OptionRegistry.BLOCK2.number
        num, m, size = value
        if size > 512:
            szx = 6
        elif 256 < size <= 512:
            szx = 5
        elif 128 < size <= 256:
            szx = 4
        elif 64 < size <= 128:
            szx = 3
        elif 32 < size <= 64:
            szx = 2
        elif 16 < size <= 32:
            szx = 1
        else:
            szx = 0

        value = (num << 4)
        value |= (m << 3)
        value |= szx

        option.value = value
        self.add_option(option)