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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 getTmpFilename(self, tmp_dir=None, prefix='tmp', suffix='.txt'):
 """Returns a temporary filename Similar interface to tempfile.mktmp() """

        # Override to change default constructor to str(). FilePath
        # objects muck up the Mothur script.
        return super(Mothur, self).getTmpFilename(
            tmp_dir=tmp_dir, prefix=prefix, suffix=suffix,
            result_constructor=str)