XML_Example.xml

<problem>
<script type="loncapa/python">
<![CDATA[

from python_lib import simpleFunctions

def test_add(expect, ans):
    try:
        a1=int(ans[0])
        return simpleFunctions.returnTrue()
    except ValueError:
        return False

def hint_fn(answer_ids, student_answers, new_cmap, old_cmap):
    aid = answer_ids[0]
    hint = str(simpleFunctions.returnTrue())
    new_cmap.set_hint_and_mode(aid,hint,'always')
]]>
</script>

  <customresponse cfn="test_add" expect="3">
      <label>Type in anything.</label>
      <textline size="40" correct_answer="3" label="Enter something" /><br/>
      <hintgroup hintfn="hint_fn"/>
      <solution>
          <div class="detailed-solution">
              <p>Explanation</p>
              <p>Seriously, anything. This is Celebrity-Jeopardy-level easy here.</p>
          </div>
      </solution>
  </customresponse>

</problem>