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

def run_create(self, original, expected, direction, plural, name, create):
        """Test that auto create correctly handles languages"""
        # Lookup language
        lang = Language.objects.auto_get_or_create(original, create=False)
        self.assertEqual(
            create,
            not bool(lang.pk),
            'Failed to assert creation for {}: {}'.format(original, create),
        )
        # Create language
        lang = Language.objects.auto_get_or_create(original)
        # Check language code
        self.assertEqual(
            lang.code, expected, 'Invalid code for {0}: {1}'.format(original, lang.code)
        )
        # Check direction
        self.assertEqual(
            lang.direction, direction, 'Invalid direction for {0}'.format(original)
        )
        # Check plurals

def auto_create(self, code, create=True):
        """Automatically create new language based on code and best guess
        of parameters.
        """
        # Create standard language
        name = '{0} (generated)'.format(code)
        if create:
            lang = self.get_or_create(code=code, defaults={'name': name})[0]
        else:
            lang = Language(code=code, name=name)

        baselang = None

        # Check for different variant
        if baselang is None and '@' in code:
            parts = code.split('@')
            baselang = self.fuzzy_get(code=parts[0], strict=True)

        # Check for different country
        if baselang is None and '_' in code or '-' in code:
            parts = code.replace('-', '_').split('_')
            baselang = self.fuzzy_get(code=parts[0], strict=True)

        if baselang is not None:
            lang.name = baselang.name
            lang.direction = baselang.direction

def daily(self, component):
        self.ensure_all_have(
            component.project,
            Language.objects.filter(translation__component=component)
        )

if self.action == self.ACTION_ACCESS_EDIT:
            for number, name in Project.ACCESS_CHOICES:
                if number == self.details['access_control']:
                    return name
            return 'Unknonwn {}'.format(self.details['access_control'])
        elif self.action in user_actions:
            if 'group' in self.details:
                return '{username} ({group})'.format(**self.details)
            return self.details['username']
        elif self.action in (
            self.ACTION_ADDED_LANGUAGE,
            self.ACTION_REQUESTED_LANGUAGE,
        ):  # noqa: E501
            try:
                return Language.objects.get(code=self.details['language'])
            except Language.DoesNotExist:
                return self.details['language']
        elif self.action == self.ACTION_ALERT:
            try:
                return ALERTS[self.details['alert']].verbose
            except KeyError:
                return self.details['alert']
        elif self.action == self.ACTION_PARSE_ERROR:
            return '{filename}: {error_message}'.format(**self.details)
        elif self.action == self.ACTION_HOOK:
            return '{service_long_name}: {repo_url}, {branch}'.format(**self.details)
        elif self.action == self.ACTION_COMMENT and 'comment' in self.details:
            return render_markdown(self.details['comment'])

        return ''

def language_name(code):
    """Get language name based on its code."""
    return escape(force_text(Language.objects.get(code=code)))

def show_engage(request, project, lang=None):
    # Get project object, skipping ACL
    obj = get_project(request, project, skip_acl=True)

    # Handle language parameter
    if lang is not None:
        language = get_object_or_404(Language, code=lang)
    else:
        language = None
    full_stats = obj.stats
    if language:
        try_set_language(lang)
        stats_obj = full_stats.get_single_language_stats(language)
    else:
        stats_obj = full_stats

    return render(
        request,
        'engage.html',
        {
            'allow_index': True,
            'object': obj,
            'project': obj,

def get_languages(self):
        """Returns list of all languages used in project."""
        return Language.objects.filter(
            translation__subproject__project=self
        ).distinct()

@python_2_unicode_compatible
class Profile(models.Model):
    """User profiles storage."""

    user = models.OneToOneField(
        User, unique=True, editable=False, on_delete=models.deletion.CASCADE
    )
    language = models.CharField(
        verbose_name=_('Interface Language'),
        max_length=10,
        blank=True,
        choices=settings.LANGUAGES,
    )
    languages = models.ManyToManyField(
        Language,
        verbose_name=_('Translated languages'),
        blank=True,
        help_text=_(
            'Choose the languages you can translate to. '
            'These will be offered to you on the dashboard '
            'for easier access to your chosen translations.'
        ),
    )
    secondary_languages = models.ManyToManyField(
        Language,
        verbose_name=_('Secondary languages'),
        help_text=_(
            'Choose languages you can understand, strings in those languages '
            'will be shown in addition to the source string.'
        ),
        related_name='secondary_profile_set',

name='project',
            slug='project',
            id=-1,
        ),
        name='component',
        slug='component',
        branch='master',
        vcs='git',
        id=-1,
    )
    if translation:
        kwargs['translation'] = Translation(
            id=-1,
            component=component,
            language_code='xx',
            language=Language(name='xxx', code='xx'),
        )
    else:
        kwargs['component'] = component
    validate_render(value, **kwargs)