title: DRY way to declare several similar form fields
body: <p>Let's say I'm trying to declare a (django) Form class with several FileFields:</p>
  
  <pre><code>class = MyForm(forms.Form):
      file_0 = forms.FileField()
      file_1 = forms.FileField()
      ...
  </code></pre>
  
  <p>I have about 20 sequential inputs to declare - what's the best way to avoid typing this all out like a chump?</p>