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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 fullpath(self, **kwargs):
 """Return a full path name for a given file """

        kwargs_copy = self.base_dict.copy()
        kwargs_copy.update(**kwargs)
        self._replace_none(kwargs_copy)        
        return NameFactory.fullpath_format.format(**kwargs_copy)