So, I'd like to represent one of Shakespeare's plays, Hamlet, into the following objects (maybe this isn't the best representation, if so please tell me):

class Play():
  acts = []
  ...
  def add_act(self, act): acts.append(act)

class Act():
  scenes = []
  ...
  def add_scene(self, scene): scenes.append(scene)

class Scene():
  elems = []
  def __init__(self, title, setting=""): ...
  def add_elem(self, elem): elems.append(elem)
  ...

class StageDirection(): # elem
  def __init__(self, text): ...

class Line(): # elem
  def __init__(self, id, text, character = None): ...
  # A None character represents a continuation from the previous line
  # id could be, for example, 1.1.1

There are other methods, of course, for printing and such in each of the classes.

The question is, how do I get a structure based on these classes (or something like them) from HTML 4 code that looks like this:

<H3>ACT I</h3> 
<h3>SCENE I. Elsinore. A platform before the castle.</h3> 
<p><blockquote> 
<i>FRANCISCO at his post. Enter to him BERNARDO</i> 
</blockquote> 

<A NAME=speech1><b>BERNARDO</b></a> 
<blockquote> 
<A NAME=1.1.1>Who's there?</A><br> 
</blockquote> 

<A NAME=speech2><b>FRANCISCO</b></a> 
<blockquote> 
<A NAME=1.1.2>Nay, answer me: stand, and unfold yourself.</A><br> 
</blockquote> 

<A NAME=speech3><b>BERNARDO</b></a> 
<blockquote> 
<A NAME=1.1.3>Long live the king!</A><br> 
</blockquote> 

<A NAME=speech4><b>FRANCISCO</b></a> 
<blockquote> 
<A NAME=1.1.4>Bernardo?</A><br> 
</blockquote> 

<A NAME=speech5><b>BERNARDO</b></a> 
<blockquote> 
<A NAME=1.1.5>He.</A><br> 
</blockquote>  <!-- for more, see the source of shakespeare.mit.edu/hamlet/full.html -->

translating that into something like this:

play = Play()
actI = Act()
sceneI = Scene("Scene I", "Elsinore. A platform before the castle.")
sceneI.add_elem(StageDirection("Francisco at his post. Enter to him Bernardo."))
sceneI.add_elem(Line("Bernardo", "Who's there?"))
...

Of course, I don't expect all the code—but what libraries and, when there aren't libraries, logic should I use?

Thanks.

(This is for a future opensource project and me learning Python for fun—not homework.)