code: def _lookup_style(style):
      if isinstance(style, string_types):
          return get_style_by_name(style)
      return style
  
file_path: catboost/contrib/python/Pygments/py2/pygments/formatter.py
imports: import codecs
  from pygments.util import get_bool_opt, string_types
  from pygments.styles import get_style_by_name
label_desc: Use image node_id 1 for calling a global function with example usage: _lookup_style(style) and returns: style, get_style_by_name