def load(self, filename, create_if_missing=True):
        filename = Path(filename)
        if not filename.exists() and create_if_missing:
            self.load_pip_requirements()
            with filename.open("w") as f:
                f.write(yaml.dump(self.serialized, default_flow_style=False,
                                  encoding=None))
            self.filename = filename
            return self.save(filename)
        with filename.open() as f:
            for group, requirements in yaml.load(f.read()).items():
                for requirement in requirements:
                    self[group].add(Requirement.coerce(requirement))
        self.filename = filename
def test_set_translation_reviewer_count_for_lang_code_adds_new_lang_key(
            self):
        community_contribution_stats = (
            suggestion_services.get_community_contribution_stats()
        )
        self._assert_community_contribution_stats_is_in_default_state()
        (
            community_contribution_stats
            .translation_reviewer_counts_by_lang_code
        ) = {'en': 1}

        (
            community_contribution_stats
            .set_translation_reviewer_count_for_language_code('hi', 2)
        )

        self.assertDictEqual(
            (
                community_contribution_stats
                .translation_reviewer_counts_by_lang_code
            ),
            {'en': 1, 'hi': 2}
        )