code: def is_style_file(filename):
      """Return True if the filename looks like a style file."""
      return STYLE_FILE_PATTERN.match(filename) is not None
  
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 2 for calling a global function with example usage: is_style_file(filename) and returns: unknown