docstr: Returns where to write a file with desired filename.
  Handles the case where we are in distributed settings, or when
  we need to output the same file multiple times (eg if a profiler
  runs for several steps)
docstr_tok: ["Returns","where","to","write","a","file","with","desired","filename",".","Handles","the","case","where","we","are","in","distributed","settings",",","or","when","we","need","to","output","the","same","file","multiple","times","(","eg","if","a","profiler","runs","for","several","steps",")"]
code: def _create_output_filename(self, filename: str) -> Path:
      """
      Returns where to write a file with desired filename.
      Handles the case where we are in distributed settings, or when
      we need to output the same file multiple times (eg if a profiler
      runs for several steps)
      """
      if self.worker_name != "":
          file = Path(filename)
          folder = self.output_dir / file.stem
          folder.mkdir(parents=True, exist_ok=True)
          return (
              folder
              / f"{self.done_steps:06}_{self.worker_name}{file.suffix}"
          )
      return self.output_dir / f"{self.done_steps:06}_{filename}"
  
imports: import logging
  import os
  import queue
  import socket
  import weakref
  from dataclasses import dataclass
  from pathlib import Path
  from typing import Any, List, Optional, Sequence, Tuple
  import torch.cuda.memory
  import torch.cuda.nvtx
  import torch.nn
  import torch.profiler
  import torch.utils.hooks
label_desc: Use image node_id 4 for calling the _Profiler obj's underlying member method code with example usage: obj._create_output_filename(filename) and returns: unknown, unknown