class_docstr: Policy Loss for PPO
code: def __init__(self, clip_eps: float = 0.2) -> None:
      super().__init__()
      self.clip_eps = clip_eps
  
imports: from typing import Optional
  import torch
  import torch.nn
  from .utils import masked_mean
label_desc: Use image node_id 1 to create a new PolicyLoss object from inherited base classes: nn with example: obj = PolicyLoss(clip_eps)