Return the selected action

        # Arguments
            probs (np.ndarray) : Probabilty for each action

        # Returns
            action

def select_action(self, nb_actions, probs):
        """Return the selected action

        # Arguments
            probs (np.ndarray) : Probabilty for each action

        # Returns
            action

        """
        action = np.random.choice(range(nb_actions), p=probs)
        return action