title: Jinja2 nested loop counter
body: <pre><code>{% set cnt = 0 %}
  {% for room in rooms %}
    {% for bed in room %}
      {% set cnt = cnt + 1 %}
    {% endfor %}
  {{ cnt }}
  {% endfor %}
  </code></pre>
  
  <p>Say we have that nested loop, printed cnt will ALWAYS be 0, because that's what it was defined when we entered the 1st for loop. When we increment the counter in the inner loop, it seems to only be a local variable for the inner loop -- so it will increment while inside the loop, but then that local cnt is gone. HOW can we modify the global cnt???</p>
  
  <p>As great as the Jinja2 doc may be, they are unclear about set variable scopes. The only thing mentioning scope was the "scoped" modifier for inner blocks, but I guess it can't be applied to everything ... crazy.</p>