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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 _update_frames(self, written):
 """Update self.frames after writing."""

        if self.seekable():
            curr = self.tell()
            self._info.frames = self.seek(0, SEEK_END)
            self.seek(curr, SEEK_SET)
        else:
            self._info.frames += written