(self, lang)
| 573 | return cls._instance |
| 574 | |
| 575 | def get_progress(self, lang): |
| 576 | if not self.progress_data: |
| 577 | return None |
| 578 | if lang == self.defaults['locale']: |
| 579 | return None |
| 580 | return self.progress_data.get(lang) |
| 581 | |
| 582 | @classmethod |
| 583 | def supported_languages(cls): |