code: def null_term(str):
      '''null terminate a string for py3'''
      if sys.version_info.major < 3:
          return str
      if isinstance(str, bytes):
          str = str.decode("utf-8")
      idx = str.find("\0")
      if idx != -1:
          str = str[:idx]
      return stf null_term(str):
      '''null terminate a string for py3'''
      if sys.version_info.major < 3:
          return str
      if isinstance(str, bytes):
          str = str.decode("utf-8")
      idx = str.find("\0")
      if idx != -1:
          str = str[:idx]
      return str
docs: null terminate a string for py3