title: How to fix SyntaxError: f-string: expressions nested too deeply in python 3.7.0?
body: <p>Below is my code snippet. When running the code in python 3.7 I get the error <code>SyntaxError: f-string: expressions nested too deeply</code>. How should I refactor my code?</p>
  <pre><code>    GRAPH_QL_FIELDS = &quot;&quot;&quot;
                  cubeId
                  title
                  deleted
                  timeVariableFormat
                  statisticalProgram {
                    name
                  }
                  topics{
                      topicId
                  }
                }
      &quot;&quot;&quot;
  
      query_topics = (
                  f'query cubesWithTopicLink($deleted: Boolean!, $topicId: String, $first: Int, $skip: Int) {{'
                  f'dataCubes(where:{AND:[{topics_some: {{topicId: $topicId}}}, {deleted: $deleted}]}, first: $first, skip: $skip) {{'
                  f'{GRAPH_QL_FIELDS}'
                  f'dataCubesConnection(where: {topics_some: {topicId: $topicId}})'
                  f'{{aggregate{{count}}}}'
                  f'}}'
              )
  </code></pre>