bug记录——python对于elasticsearch-dsl的创建mapping报错

在学习python搜索引擎中，python对于elasticsearch-dsl的创建mapping报错：elasticsearch.exceptions.RequestError: RequestError(400, ‘mapper_parsing_exception’, 'Root mapping definition has unsupported parameters: [praise_nums : {type=integer}] …
原因是：安装的elasticsearch-rtf是5.x.x的版本，默认pip install elasticsearch-dsl安装的则是7.x.x的版本。
解决办法：统一版本就可。操作如下：

• 卸载现在安装的新版elasticsearch-dsl
  

• 安装5.x.x版本的elasticsearch-rtf
  

• python文件的代码

# -*- coding: utf-8 -*-
'''
@FileName: es_type.py
@Software: PyCharm
'''
from datetime import datetime
from elasticsearch_dsl import DocType, Date, Integer, Keyword, Text, analyzer
from elasticsearch_dsl.connections import connections

connections.create_connection(hosts=["localhost"])

class ArticleType(DocType):
    title = Text(analyzer="ik_max_word")
    create_date = Date()
    url = Keyword()
    url_object_id = Keyword()
    front_img_url = Keyword()
    front_image_path = Keyword()
    praise_nums = Integer()
    fav_nums = Integer()
    read_nums = Integer()
    content = Text(analyzer="ik_max_word")

    class Meta:
        index = "jobbole"
        doc_type = "article"

	"""
	# 这个写法是elasticsearch-dsl 7.1.0的写法
    class Index:
        name = 'jobbole'
        doc_type = "article"
        settings = {
            "number_of_shards": 6
        }

    def save(self, **kwargs):
        self.lines = len(self.body.split())
        return super(ArticleType, self).save(**kwargs)

    def is_published(self):
        return datetime.now() > self.published_from
    """

if __name__ == "__main__":
    ArticleType.init()

卡了一下午的错误，反复对照了官方文档链接: elasticsearch-dsl.readthedocs，没有问题，网上也没找到相关经验，最后才发现是版本问题。
望可以帮到像我一样的小白，免受折磨！