code: def qt_core(request):
      qt_compat = pytest.importorskip("matplotlib.backends.qt_compat")
      QtCore = qt_compat.QtCore
  
      return QtCore
  
imports: import copy
  import importlib
  import os
  import signal
  import sys
  from datetime import date, datetime
  from unittest import mock
  import pytest
  import matplotlib
  from matplotlib import pyplot
  from matplotlib._pylab_helpers import Gcf
  from matplotlib import _c_internal_utils
label_desc: Use image node_id 1 for calling a global function with example usage: qt_core(request) and returns: QtCore