class_docstr: Abstract base class for line-based input transformers.
class_docstr_tok: ["Abstract","base","class","for","line-based","input","transformers","."]
docstr: Return, transformed any lines that the transformer has accumulated,
  and reset its internal state.
  
  Must be overridden by subclasses.
code: def reset(self):
      """Return, transformed any lines that the transformer has accumulated,
      and reset its internal state.
  
      Must be overridden by subclasses.
      """
      pass
  
imports: import abc
  import functools
  import re
  import tokenize
  from tokenize import untokenize, TokenError
  from io import StringIO
  from IPython.core.splitinput import LineInfo
  from IPython.utils import tokenutil
label_desc: Use image node_id 2 for calling the InputTransformer obj's underlying member method code with example usage: obj.reset() without return types