code: def re(s):
      """
      Convert traditional string representation of regular expression |s|
      into Plex representation.
      """
      return REParser(s).parse_re()
  
file_path: catboost/contrib/tools/cython/Cython/Plex/Traditional.py
imports: from __future__ import absolute_import
  from .Regexps import Alt, Seq, Rep, Rep1, Opt, Any, AnyBut, Bol, Eol, Char
  from .Errors import PlexError
label_desc: Use image node_id 1 for calling a global function with example usage: re(s) and returns: REParser