code: def mse_real_loss(x: torch.Tensor) -> torch.Tensor:
      return F.mse_loss(
          x, torch.tensor(1.0, device=x.device).expand_as(x)
      )
  
imports: import typing
  import flashy
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 4 for calling a global function with example usage: mse_real_loss(x) and returns: F