More minor cleanups

djangoapps/courseware/capa/inputtypes.py

+#
+# File:   courseware/capa/inputtypes.py
+#
+
+'''
+Module containing the problem elements which render into input objects
+
+- textline
+- textbox (change this to textarea?)
+- schemmatic
+
+These are matched by *.html files templates/*.html which are mako templates with the actual html.
+
+'''
+
+
 from lxml.etree import Element
 from lxml import etree
 
 from mitxmako.shortcuts import render_to_string
 
+#-----------------------------------------------------------------------------
 #takes the xml tree as 'element', the student's previous answer as 'value', and the graded status as 'state'
 
 def choicegroup(element, value, state):
+    '''
+    Radio button inputs: multiple choice or true/false
+
+    TODO: allow order of choices to be randomized, following lon-capa spec.  Use "location" attribute,
+    ie random, top, bottom.
+    '''
     eid=element.get('id')
     if element.get('type') == "MultipleChoice":
         type="radio"
@@ -16,7 +39,7 @@ def choicegroup(element, value, state):
     choices={}
     for choice in element:
         assert choice.tag =="choice", "only <choice> tags should be immediate children of a <choicegroup>"
-        choices[choice.get("name")] = etree.tostring(choice[0])
+        choices[choice.get("name")] = etree.tostring(choice[0])	# TODO: what if choice[0] has math tags in it?
     context={'id':eid, 'value':value, 'state':state, 'type':type, 'choices':choices}
     html=render_to_string("choicegroup.html", context)
     return etree.XML(html)