code: def len_b(bstring):
      groups_of_3, leftover = divmod(len(bstring), 3)
      # 4 bytes out for each 3 bytes (or nonzero fraction thereof) in.
      return groups_of_3 * 4 + (4 if leftover else 0)
  
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 6 for calling a global function with example usage: len_b(bstring) and returns: unknown