code: def async_mark():
      try:
          import_optional_dependency("pytest_asyncio")
          async_mark = pytest.mark.asyncio
      except ImportError:
          async_mark = pytest.mark.skip(
              reason="Missing dependency pytest-asyncio"
          )
  
      return async_mark
  
imports: from __future__ import annotations
  import locale
  from typing import Callable
  import numpy
  import pytest
  from pandas._config import get_option
  from pandas._typing import F
  from pandas.compat import IS64, is_platform_windows
  from pandas.compat._optional import import_optional_dependency
  from pandas.core.computation.expressions import NUMEXPR_INSTALLED, USE_NUMEXPR
  from pandas.util.version import Version
label_desc: Use image node_id 9 for calling a global function with example usage: async_mark() and returns: async_mark