code: def _bencode(s):
      # We can't quite use base64.encodestring() since it tacks on a "courtesy
      # newline".  Blech!
      if not s:
          return s
      hasnewline = s[-1] == "\n"
      value = base64.encodestring(s)
      if not hasnewline and value[-1] == "\n":
          return value[:-1]
      return value
  
file_path: catboost/contrib/tools/python/src/Lib/email/encoders.py
imports: import base64
  from quopri import encodestring
label_desc: Use image node_id 2 for calling a global function with example usage: _bencode(s) and returns: value, s, value