Template in jinja2 batch replaces content in json string

Elasticsearch is used in the project, and the query method in Json format is used. There are several places in a query statement that need to be replaced, and the replaced values ​​are the same. At first, I converted json to string and processed it with the format function. I found that it could not be successfully converted back to json. My colleagues reminded that you can use jinja2 template to process strings.

second_search = """

    {
      "query": {
        "bool": {
          "should": [
            {
              "bool": {
                "should": [
                  {
                    "term": {
                      "{{ prod }}_name_en.text": {
                        "value": "{{ keyword }}",
                        "boost": 10
                      }
                    }
                  },
                  {
                    "term": {
                      "{{prod}}_name_zh.text": {
                        "value": "{{ keyword }}",
                        "boost": 10
                      }
                    }
                  }
                ]
              }
            },
            {
              "bool": {
                "should": [
                  {
                    "wildcard": {
                      "{{prod}}_name_en.text": {
                        "value": "{{ keyword }}*",
                        "boost": 5
                      }
                    }
                  },
                  {
                    "wildcard": {
                      "{{prod}}_name_zh.text": {
                        "value":"{{ keyword }}*",
                        "boost": 5
                      }
                    }
                  }
                ]
              }
            },
            {
              "query_string": {
                "fields": ["{{prod}}_name_en", "{{prod}}_name_zh"],
                "query": "{{ keyword }}",
                "boost": 1
              }
            }
          ]
        }
      }
    }
    """

second_tpl = Template(second_search)
second_str = second_tpl.render(keyword=kws, prod='other')
second_json = json.loads(second_str)

经过这么处理后再把字符串转为json对象很顺利