code: def pytest_collection_modifyitems(config, items):
      if config.getoption(ONLY_EXE, None) or config.getoption(
          SKIP_EXE, None
      ):
          only = config.getoption(ONLY_EXE, None)
          for item in items:
              exe_marker = _make_exe_marker(item, only=only)
              if exe_marker is not None:
                  item.add_marker(exe_marker)
  
file_path: graphviz/tests/conftest.py
imports: import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: pytest_collection_modifyitems(config, items) without return types