code: def nvmlErrorString(result):
      """Convert NVML error codes into readable strings."""
      fn = _get_nvml_function("nvmlErrorString")
      fn.restype = ctypes.c_char_p
      return fn(result)
  
imports: import os
  import sys
  import ctypes
  import threading
label_desc: Use image node_id 4 for calling a global function with example usage: nvmlErrorString(result) and returns: fn