title: Get index of element iterating thgrough multiple choices field django for in loop
body: <p>I have MultipleChoiceFieldfield</p>
  
  <pre><code>OPTIONS = (
          ("AUT", "Austria"),
          ("DEU", "Germany"),
          ("NLD", "Neitherlands"),
      )
  
      countries = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple(attrs={"name": "select_0","class": "fff"}),
                                            choices=OPTIONS)
  </code></pre>
  
  <p>I build my own html structure for this field and this is simplified code:</p>
  
  <pre><code>{% for value, text in simple_search_form.countries.field.choices %}
     {{value}}
     {{text}}
   {% endfor %}
  </code></pre>
  
  <p>How do I get and index of each element here?
  I need to have</p>
  
  <pre><code> {{value}}
   {text}}
   {{index}}
  </code></pre>