code: def __enter__(self):
      if self.autocast is None:
          return
      try:
          self.autocast.__enter__()
      except RuntimeError:
          device = self.autocast.device
          dtype = self.autocast.fast_dtype
          raise RuntimeError(
              f"There was an error autocasting with dtype={dtype} device={device}\n"
              "If you are on the FAIR Cluster, you might need to use autocast_dtype=float16"
          )
  
imports: import torch
label_desc: Use image node_id 2 for calling the TorchAutocast obj's underlying member method code with example usage: obj.__enter__() without return types