code: def decodestring(s, header=False):
      if a2b_qp is not None:
          return a2b_qp(s, header=header)
      from io import BytesIO
  
      infp = BytesIO(s)
      outfp = BytesIO()
      decode(infp, outfp, header=header)
      return outfp.getvalue()
  
file_path: cpython/Lib/quopri.py
label_desc: Use image node_id 6 for calling a global function with example usage: decodestring(s, header) and returns: outfp, a2b_qp