How to use the weblate.lang.models.Language.objects function in weblate

def test_affects_unrelated(self):
        """Unrelated objects test.

        If I set an ACL on an object, it should not affect objects
        that it doesn't match. (in this case, a different language)
        """
        lang_cs = Language.objects.get(code='cs')
        lang_de = Language.objects.get(code='de')
        trans_cs = Translation.objects.create(
            component=self.component, language=lang_cs,
            plural=lang_cs.plural,
            filename="this/is/not/a.template"
        )
        trans_de = Translation.objects.create(
            component=self.component, language=lang_de,
            plural=lang_de.plural,
            filename="this/is/not/a.template"
        )

        acl = GroupACL.objects.create(language=lang_cs)
        acl.groups.add(self.group)

        self.assertTrue(can_edit(self.privileged, trans_cs, self.PERMISSION))

def test_profile(self):
        # Get profile page
        response = self.client.get(reverse('profile'))
        self.assertContains(response, 'action="/accounts/profile/"')

        # Save profile
        response = self.client.post(
            reverse('profile'),
            {
                'language': 'cs',
                'languages': Language.objects.get(code='cs').id,
                'secondary_languages': Language.objects.get(code='cs').id,
                'first_name': 'First Last',
                'email': 'noreply@weblate.org',
                'username': 'testik',
            }
        )
        self.assertRedirects(response, reverse('profile'))

def count_languages(self):
        return (
            Language.objects.filter(
                translation__component__project__in=self.projects.all()
            )

def show_languages(request):
    if request.user.has_perm('language.edit'):
        languages = Language.objects.all()
    else:
        languages = Language.objects.have_translation()
    return render(
        request,
        'languages.html',
        {
            'allow_index': True,
            'languages': prefetch_stats(sort_objects(languages)),
            'title': _('Languages'),
            'global_stats': GlobalStats(),
        },

def save(self, *args, **kwargs):
        super(Group, self).save(*args, **kwargs)
        if self.language_selection == SELECTION_ALL:
            self.languages.set(Language.objects.all())
        if self.project_selection == SELECTION_ALL:
            self.projects.set(Project.objects.all())
        elif self.project_selection == SELECTION_ALL_PUBLIC:
            self.projects.set(
                Project.objects.filter(access_control=Project.ACCESS_PUBLIC),
                clear=True
            )
        elif self.project_selection == SELECTION_ALL_PROTECTED:
            self.projects.set(
                Project.objects.filter(
                    access_control__in=(
                        Project.ACCESS_PUBLIC, Project.ACCESS_PROTECTED
                    )
                ),
                clear=True
            )

def update_languages(profile, userprofile):
        """Update user language preferences."""
        profile.language = userprofile['language']
        for lang in userprofile['secondary_languages']:
            profile.secondary_languages.add(Language.objects.auto_get_or_create(lang))
        for lang in userprofile['languages']:
            profile.languages.add(Language.objects.auto_get_or_create(lang))

def handle(self, *args, **options):
        """Create default set of languages."""
        kwargs = {}
        if options["verbosity"] >= 1:
            kwargs["logger"] = self.stdout.write
        Language.objects.setup(options["update"], **kwargs)

return render(
        request,
        'component.html',
        {
            'allow_index': True,
            'object': obj,
            'project': obj.project,
            'translations': sort_objects(
                prefetch_stats(obj.translation_set.prefetch())
            ),
            'reports_form': ReportsForm(),
            'last_changes': last_changes,
            'last_changes_url': urlencode(
                {'component': obj.slug, 'project': obj.project.slug}
            ),
            'language_count': Language.objects.filter(
                translation__component=obj
            ).distinct().count(),
            'replace_form': optional_form(ReplaceForm, user, 'unit.edit', obj),
            'bulk_state_form': optional_form(
                BulkStateForm, user, 'translation.auto', obj,
                user=user, obj=obj
            ),
            'whiteboard_form': optional_form(
                WhiteboardForm, user, 'component.edit', obj
            ),
            'delete_form': optional_form(
                DeleteForm, user, 'component.edit', obj, obj=obj
            ),
            'rename_form': optional_form(
                ComponentRenameForm, user, 'component.edit', obj,
                request=request, instance=obj

def __init__(self, component, *args, **kwargs):
        super(MatrixLanguageForm, self).__init__(*args, **kwargs)
        languages = Language.objects.filter(translation__component=component)
        self.fields['lang'].choices = sort_choices(
            [(l.code, '{0} ({1})'.format(force_text(l), l.code)) for l in languages]
        )

)

            if not self.discovery.matched_files:
                raise CommandError('Your mask did not match any files!')

            self.logger.info(
                'Found %d components',
                len(self.discovery.matched_components)
            )
            langs = set()
            for match in self.discovery.matched_components.values():
                langs.update(match['languages'])
            self.logger.info('Found %d languages', len(langs))

            # Do some basic sanity check on languages
            if Language.objects.filter(code__in=langs).count() == 0:
                raise CommandError(
                    'None of matched languages exists, maybe you have '
                    'mixed * and ** in the mask?'
                )
        return self.discovery