Python Flask pass strings from backend to JavaScript

I use this template to pass values from Flask to the frontend (chart)

@app.route("/allusers", methods=["POST", "GET"])
def allusers():
    if request.method == "GET":
        user_collection = mongo.db.users
        df = pd.DataFrame(list(user_collection.find()))
        df["price"] = df["price"].apply(pd.to_numeric)
        result = round(df["price"].mean(), 2)
        return render_template(
            "/result.html",
            result=result,
            nrow=df.shape[0],
            series=list(df["price"]),
            description=list(df["description"]),
        )

The price values give work perfectly fine, but the strings which I console.log

{{description}} 

in the HTML gives me this:

['dfsf', 'dfsfggg', 'dfsf', 'dfsdfs']

console.log("{{description}}");

This gives me:

['dfsf', 'dfsfggg', 'dfsf', 'dfsdfs']

I have to use it in JS like this:

  <script>
    $(function() {
      console.log("{{description}}");

      $("#container").highcharts({
        chart: {
          animation: {
            duration: 1000
          }
        },

        xAxis: {
          categories: ["Bla", "bla2", "bla3", "Bla4"]
        },

        series: [
          {
            data: JSON.parse("{{series}}"),
            name: "Price"
          }
        ]
      });
    });
  </script>

The strings seem to get converted somehow. Can anyone tell me what happens there and what I can do about it?