text: """Python Script Template."""
  
  from .adversarial_policy import AdversarialPolicy
  
  
  class JointPolicy(AdversarialPolicy):
      """Given a protagonist and an antagonist policy, combine to give a joint policy."""
  
      def __init__(self, dim_action, action_scale, *args, **kwargs) -> None:
          super().__init__(
              dim_action=dim_action, action_scale=action_scale, *args, **kwargs
          )
  
      def forward(self, state):
          """Forward compute the policy."""
          p_dim = self.protagonist_policy.dim_action[0]
          a_dim = self.antagonist_policy.dim_action[0]
  
          p_mean, p_scale_tril = self.protagonist_policy(state)
          a_mean, a_scale_tril = self.antagonist_policy(state)
  
          p_std = p_scale_tril.diagonal(dim1=-1, dim2=-2)
          a_std = a_scale_tril.diagonal(dim1=-1, dim2=-2)
  
          if self.protagonist:
              h_mean = p_mean[..., p_dim:]
              h_std = p_std[..., p_dim:]
          elif self.antagonist:
              h_mean = a_mean[..., a_dim:]
              h_std = a_std[..., a_dim:]
          else:
              raise NotImplementedError
          if p_dim + a_dim < self.dim_action[0]:
              h_mean, h_scale_tril = self.hallucination_policy(state)
              h_std = h_scale_tril.diagonal(dim1=-1, dim2=-2)
  
          p_mean, p_std = p_mean[..., :p_dim], p_std[..., :p_dim]
          a_mean, a_std = a_mean[..., :a_dim], a_std[..., :a_dim]
  
          return self.stack_policies((p_mean, a_mean, h_mean), (p_std, a_std, h_std))
  