code: def _no_marker(req):
      return not req.marker
  
file_path: catboost/contrib/python/setuptools/py3/setuptools/command/_requirestxt.py
imports: import io
  from collections import defaultdict
  from itertools import filterfalse
  from typing import Dict, List, Tuple, Mapping, TypeVar
  from ..None import _reqs
  from ..extern.jaraco.text import yield_lines
  from ..extern.packaging.requirements import Requirement
label_desc: Use image node_id 6 for calling a global function with example usage: _no_marker(req) and returns: unknown