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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 get_block(self, x, y, z):
 """Get a block from relative x,y,z."""

        sy,by = divmod(y, 16)
        section = self.get_section(sy)
        if section == None:
            return None

        return section.get_block(x, by, z)