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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_default_sections(self):
 """ Starting from scratch, so create a default rc file """

        self.config.add_section('metadata')
        self.config.set('metadata', 'shared', 'common')
        self.config.add_section('common')
        self.config.add_section('development')
        self.config.add_section('production')