code: def get_nvcc_path():
      # Returns the path to the nvcc command or None if not found.
      global _nvcc_path
      if _nvcc_path == "":
          _nvcc_path = _get_nvcc_path()
      return _nvcc_path
  
imports: import ctypes
  import importlib.metadata
  import json
  import os
  import os.path
  import re
  import shutil
  import sys
  from typing import Any, Dict, List, Optional, Tuple
  import warnings
label_desc: Use image node_id 3 for calling a global function with example usage: get_nvcc_path() and returns: _nvcc_path