code: def pytest_configure(config):
      # register an additional marker
      config.addinivalue_line(
          "markers",
          "slow: manually marked test as slow (use .ci/durations.json instead)",
      )
      config.addinivalue_line(
          "markers", "quickcheck: skip very slow tests"
      )
      config.addinivalue_line(
          "markers", "veryquickcheck: skip slow & very slow tests"
      )
  
file_path: sympy/conftest.py
imports: from __future__ import print_function, division, absolute_import
  import os
  from itertools import chain
  import json
  import sys
  import warnings
  import pytest
  from sympy.testing.runtests import setup_pprint, _get_doctest_blacklist
label_desc: Use image node_id 3 for calling a global function with example usage: pytest_configure(config) without return types