How to get avatar url in python-social-auth?

Question

Django

Good afternoon.
I made a custom pipline to save avatars of users who log in through social networks.
For example:

def save_profile(backend, user, response, *args, **kwargs):
    if isinstance(backend, VKOAuth2):
        if not user.avatar:
            url = response['photo']
            try:
                response = request('GET', url)
                response.raise_for_status()
            except ConnectionError:
                pass
            else:
                user.avatar.save(u'',
                                 ContentFile(response.content),
                                 save=False
                                 )
                user.save()

How to make it so that the avatar is not saved, but stupidly give the URL to it in the template?