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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 _wipe_www_page(self, slug):
        '''Remove all data in www about the page identified by slug.'''
        wd = os.path.join(self._dirs['www'], slug)
        if os.path.isdir(wd): # pragma: no cover
            shutil.rmtree(wd)