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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 write(self, arg, **kwargs):
 """Write instance to file."""

        if hasattr(arg, 'seek'):
            self._tofile(arg, **kwargs)
        else:
            with open(arg, 'wb') as fid:
                self._tofile(fid, **kwargs)