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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 is_memmappable(self):
 """Return if page's image data in file can be memory-mapped."""

        return (self.parent.filehandle.is_file and self.is_final and
                # (self.bitspersample == 8 or self.parent.isnative) and
                self.is_contiguous[0] % self.dtype.itemsize == 0)