title: How to use django functionality "datastructures.SortedDict" in flask?
body: <pre><code>from django.utils import datastructures
  meters_info = datastructures.SortedDict([
              ("instance", {
                  'label': '',
                  'description': _("Existence of instance"),
              }),
              ("instance:&lt;type&gt;", {
                  'label': '',
                  'description': _("Existence of instance &lt;type&gt; "
                                   "(openstack types)"),
              }),
              ("memory", {
                  'label': '',
                  'description': _("Volume of RAM"),
              }),])
  </code></pre>
  
  <p>I am converting django app to flask. They are using datastructures.SortedDict. How get the same functionality in flask</p>