class_docstr: lightweight stream wrapper that implements peek()
class_docstr_tok: ["lightweight","stream","wrapper","that","implements","peek","(",")"]
code: def readline(self):
      return self.stream.readline()
  
imports: import re
  import os
  import sys
  import warnings
  from dill import _dill, Pickler, Unpickler
  from ._dill import BuiltinMethodType, FunctionType, MethodType, ModuleType, TypeType, _import_module, _is_builtin_module, _is_imported_module, _main_module, _reverse_typemap, __builtin__
  from typing import Optional, Union
  import pathlib
  import tempfile
label_desc: Use image node_id 3 for calling the _PeekableReader obj's underlying member method code with example usage: obj.readline() and returns: self