class_docstr: Generic class to embed an iframe in an IPython notebook
code: def __init__(
      self,
      src,
      width,
      height,
      extras: Optional[Iterable[str]] = None,
      **kwargs,
  ):
      if extras is None:
          extras = []
  
      self.src = src
      self.width = width
      self.height = height
      self.extras = extras
      self.params = kwargs
  
imports: from html import escape
  from os.path import exists, isfile, splitext, abspath, join, isdir
  from os import walk, sep, fsdecode
  from IPython.core.display import DisplayObject, TextDisplayObject
  from typing import Tuple, Iterable, Optional
label_desc: Use image node_id 1 to create a new IFrame object from inherited base classes: object with example: obj = IFrame(src, width, height, extras)