运行报错改了很多遍还是不行该怎么解决？

将数据集的数据通过python插入到MongoDB数据库中:
1、数据库名字为spider21_ database;
2、 集合名字为spider21_ table;

import codecs
import csv
import pymongo
with codecs.open(r'douban_data.csv', encoding='utf-8-sig') as f:
    for row in csv.DictReader(f, skipinitialspace=True):
        print(row)
        conn = pymongo.MongoClient()
        db = conn.spider21_database
        collection = db['spider21_table']
        conn['spider21_database']['spider21_table'].inster_Many({row})

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