read_from_mongo_to_csv

import csv


from pymongo import MongoClient
# 建立mongo连接
client = MongoClient('192.11.11.11', 27017)
# client.数据库名
db = client.Flight
# 用户名密码认证
db.authenticate('11', '1@1')
#表名字
collection = db['test']
#子查询前10项
# results = collection.find().limit(10)
results=collection.find()
# <class 'pymongo.cursor.Cursor'>  results
print(type(results))
with open('result.csv','w',encoding='utf-8',newline='') as csvfile:
    fieldname = ['website','if_mobile']
    write = csv.DictWriter(csvfile,fieldnames=fieldname)
    write.writeheader()

    for result in results:
        # result是一个字典类型,依次取出我们的每一个值
        website = result['website']
        if_moblie = result['if_mobile']
        write.writerow(
            {'website':website,'if_mobile':if_moblie
             })

client.close()