title: Appending dictionary in to list is creating duplicates
body: <p>I am trying to create a list of dictionaries, but everytime when I try to append a new item to the list, it is replacing the previous copies with then new item.</p>
  <pre><code>nested_dict = {}
  
  request_data = { 
          &quot;locale&quot;: &quot;US&quot;,
          &quot;field&quot;: &quot;Company Name&quot;,
          &quot;document_type&quot;: &quot;invoice&quot;
      }
  
  
  for key, value in request_data.items():
      term_item = {}
      term_item[key] = value
      nested_dict[&quot;term&quot;] = term_item
      term_list.append(nested_dict)
  </code></pre>
  <p>Result obtained:</p>
  <pre><code>[{'term': {'document_type': 'invoice'}}, {'term': {'document_type': 'invoice'}}, {'term': {'document_type': 'invoice'}}]
  </code></pre>
  <p>Expectation :</p>
  <pre><code>[{'term': {&quot;locale&quot;: &quot;US&quot;}}, {'term': {&quot;field&quot;: 'Company Name'}}, {'term': {'document_type': 'invoice'}}]
  </code></pre>