def _set_raises(self):
        """Sets the raises and descriptions"""
        # TODO: manage different in/out styles
        # manage setting if not mandatory for numpy but optional
        if self.docs['in']['raises']:
            if self.dst.style['out'] != 'numpydoc' or self.dst.style['in'] == 'numpydoc' or \
                    (self.dst.style['out'] == 'numpydoc' and
                     'raise' not in self.dst.numpydoc.get_excluded_sections()):
                # list of parameters is like: (name, description)
                self.docs['out']['raises'] = list(self.docs['in']['raises'])
Sets the raises and descriptions