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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 format_options_error(self):
 """ Return a fuzzy match message based on the OptionError """

        allowed_keywords = self.allowed_keywords
        target = allowed_keywords.target
        matches = allowed_keywords.fuzzy_match(self.invalid_keyword)
        if not matches:
            matches = allowed_keywords.values
            similarity = 'Possible'
        else:
            similarity = 'Similar'

        loaded_backends = Store.loaded_backends()
        target = 'for {0}'.format(target) if target else ''

        if len(loaded_backends) == 1:
            loaded=' in loaded backend {0!r}'.format(loaded_backends[0])
        else:
            backend_list = ', '.join(['%r'% b for b in loaded_backends[:-1]])
            loaded=' in loaded backends {0} and {1!r}'.format(backend_list,
                                                            loaded_backends[-1])

        suggestion = ("If you believe this keyword is correct, please make sure "
                      "the backend has been imported or loaded with the "
                      "hv.extension.")

        group = '{0} option'.format(self.group_name) if self.group_name else 'keyword'
        msg=('Unexpected {group} {kw} {target}{loaded}.\n\n'
             '{similarity} keywords in the currently active '
             '{current_backend} renderer are: {matches}\n\n{suggestion}')
        return msg.format(kw="'%s'" % self.invalid_keyword,
                          target=target,
                          group=group,
                          loaded=loaded, similarity=similarity,
                          current_backend=repr(Store.current_backend),
                          matches=matches,
                          suggestion=suggestion)