code: def iter_user_libraries():
      for stylelib_path in USER_LIBRARY_PATHS:
          stylelib_path = os.path.expanduser(stylelib_path)
          if os.path.exists(stylelib_path) and os.path.isdir(
              stylelib_path
          ):
              yield stylelib_path
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/style/core.py
imports: from __future__ import absolute_import, division, print_function
  import six
  import os
  import re
  import contextlib
  import warnings
  import matplotlib
  from matplotlib import rc_params_from_file, rcParamsDefault
label_desc: Use image node_id 7 for calling a global function with example usage: iter_user_libraries() without return types