class_docstr: Wrapper for a stateless input transformer implemented as a function.
class_docstr_tok: ["Wrapper","for","a","stateless","input","transformer","implemented","as","a","function","."]
docstr: Send a line of input to the transformer, returning the
  transformed input.
docstr_tok: ["Send","a","line","of","input","to","the","transformer",",","returning","the","transformed","input","."]
code: def push(self, line):
      """Send a line of input to the transformer, returning the
      transformed input."""
      return self.func(line)
  
imports: import abc
  import functools
  import re
  from IPython.core.splitinput import LineInfo
  from IPython.utils import tokenize2
  from IPython.utils.openpy import cookie_comment_re
  from IPython.utils.py3compat import with_metaclass, PY3
  from IPython.utils.tokenize2 import generate_tokens, untokenize, TokenError
label_desc: Use image node_id 3 for calling the StatelessInputTransformer obj's underlying member method code with example usage: obj.push(line) and returns: self