@classmethod
    def get_interaction_by_id(cls, interaction_id):
        if interaction_id not in cls._interactions:
            cls._refresh()
        return cls._interactions[interaction_id]
Returns the CSRF token required for a POST form. The token is an
dataset/ETHPy150Open oppia/oppia/core/domain/interaction_registry.py/Registry.get_interaction_by_id--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/middleware/csrf.py/get_token