code: def _uToUnicode(component):
      """Helper for toUnicode() to handle "u1ABCD" components."""
      match = _re_u.match(component)
      if match is None:
          return None
      digits = match.group(1)
      try:
          value = int(digits, 16)
      except ValueError:
          return None
      if (value >= 0x0000 and value <= 0xD7FF) or (
          value >= 0xE000 and value <= 0x10FFFF
      ):
          return chr(value)
      return None
  
file_path: catboost/contrib/python/fonttools/fontTools/agl.py
imports: from fontTools.misc.textTools import tostr
  import re
label_desc: Use image node_id 6 for calling a global function with example usage: _uToUnicode(component) and returns: None, None, chr, None