parameters: (joint_policies, state, player)
return_statement: return [
        joint_policy[player].action_probabilities(state, player_id=player)
        for joint_policy in joint_policies
    ]
docstring: Returns {action: prob} for `player` in `state` for all joint policies.
  
    Args:
      joint_policies: List of joint policies.
      state: Openspiel State
      player: Current Player
  
    Returns:
      {action: prob} for `player` in `state` for all joint policies.
docstring_summary: Returns {action: prob} for `player` in `state` for all joint policies.
docstring_tokens: Returns { action : prob } for player in state for all joint policies .
function: def _aggregate_at_state(joint_policies, state, player):
    """Returns {action: prob} for `player` in `state` for all joint policies.
  
    Args:
      joint_policies: List of joint policies.
      state: Openspiel State
      player: Current Player
  
    Returns:
      {action: prob} for `player` in `state` for all joint policies.
    """
    return [
        joint_policy[player].action_probabilities(state, player_id=player)
        for joint_policy in joint_policies
    ]
function_tokens: def _aggregate_at_state ( joint_policies , state , player ) : return [ joint_policy [ player ] . action_probabilities ( state , player_id = player ) for joint_policy in joint_policies ]