code: def len_q(bstring):
      return sum(len(_q_byte_map[x]) for x in bstring)
  
file_path: catboost/contrib/tools/python3/src/Lib/email/_encoded_words.py
imports: import re
  import base64
  import binascii
  import functools
  from string import ascii_letters, digits
  from email import errors
label_desc: Use image node_id 3 for calling a global function with example usage: len_q(bstring) and returns: sum