code: def all_presets():
      result = []
      for f in sorted(os.listdir("rl_coach/presets")):
          if f.endswith(".py") and f != "__init__.py":
              preset = f.split(".")[0]
              if preset not in FAILING_PRESETS:
                  result.append(preset)
      return result
  
file_path: coach/rl_coach/tests/presets/test_presets.py
imports: import os
  import sys
  import pytest
  import os
  import time
  import shutil
  from subprocess import Popen, DEVNULL
  from rl_coach.logger import screen
label_desc: Use image node_id 1 for calling a global function with example usage: all_presets() and returns: result