code: def _have_context():
      return _lib.glGetError() != 1282
  
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 1 for calling a global function with example usage: _have_context() and returns: unknown