code: def _get_gl_version(_lib):
      """Helper to get the GL version string"""
      try:
          return _lib.glGetString(7938).decode("utf-8")
      except Exception:
          return "unknown"
  
file_path: vispy/vispy/gloo/gl/gl2.py
imports: import os
  import sys
  import ctypes.util
  from .None import _copy_gl_functions
  from ._constants import *
  from ...util import logger
  from .None import _gl2
label_desc: Use image node_id 2 for calling a global function with example usage: _get_gl_version(_lib) and returns: _lib, str