class_docstr: CTC-based loss for S2ST.
code: def __init__(
      self,
      weight: float = 1.0,
  ):
      # Note(Jiatong): dummy CTC loss, only providing weight
      # for final loss calculation
      super().__init__()
      assert check_argument_types()
      self.weight = weight
  
imports: import torch
  import torch.nn.functional
  from typeguard import check_argument_types
  from espnet2.s2st.losses.abs_loss import AbsS2STLoss
label_desc: Use image node_id 1 to create a new S2STCTCLoss object from inherited base classes: AbsS2STLoss with example: obj = S2STCTCLoss(weight)