我就废话不多说了，大家还是直接看代码吧~

lt=client.fangjia.district_stat_all_0416dl = dt.find(query)bf=[]for m in dl: bf.append(m) if len(bf)==20000: lt.insert_many(bf) bf=[]lt.insert_many(bf)

补充知识：Python操作Mongodb插入数据的两种方法：insert_one()与insert_many()

代码说明：

将mysql中table的数据插入到mongodb里

sys.setdefaultencoding('utf8')import webfrom pymongo import MongoClientclass getPltfList(object): def __init__(self): self.db1 = web.database(dbn='mysql', db = 'episode', user = 'root', pw= 'abc111--', host = '127.0.0.1') self.db1.printing = False self.db2 = web.database(dbn='mysql', db = 'episode_soc', user = 'root', pw= 'abc111--', host = '127.0.0.1') self.db2.printing = False self.db3 = web.database(dbn='mysql', db = 'cl_episode', user = 'root', pw= 'abc111--', host = '127.0.0.1') self.db3.printing = False self.db4 = web.database(dbn='mysql', db = 'cl_episode_soc', user = 'root', pw= 'abc111--', host = '127.0.0.1') self.db4.printing = False def __call__(self): return self.createPltfList() def createPltfList(self): self.ckpltfList = list(self.db1.query('select name, ip from EPISODE_PLTF_INFO order by id DESC')) self.ckpltfList += list(self.db2.query('select name, ip from EPISODE_PLTF_INFO order by id DESC')) self.clpltfList = list(self.db3.query('select name, ip from EPISODE_PLTF_INFO order by id DESC')) self.clpltfList += list(self.db4.query('select name, ip from EPISODE_PLTF_INFO order by id DESC')) return self.ckpltfList,self.clpltfListif __name__ == '__main__' : mpList = list() flag = 0 tmp = 0 sum1 = 0 sum2 = 0 pltfList = getPltfList()() client = MongoClient("127.0.0.1", 27017) mdb = client.episode collection = mdb.pltf_basic_info # print (type(pltfList[1])) #list result= list() for pltf_my in pltfList[0]: pltf_mog = collection.find() for record in pltf_mog: IP = record.get('Cfg').get('Debug_IP') Name = record.get('Cfg').get('Register_Name') # print IP, Name if IP == pltf_my['ip'] and Name == pltf_my['name'] : flag = 1 # print IP, Name break else: flag = 0 if flag == 0 : data1 = {"Cfg" : {"Debug_IP" : pltf_my['ip'],"Register_Name":pltf_my['name'], "Site":"SH-CK"} } # print data1 result.append((data1)) # collection.insert_one(data1) # collection.delete_one(data) sum1 = sum1+1 # print len(result) # collection.insert_many(result) for pltf_my in pltfList[1]: pltf_mog = collection.find() for record in pltf_mog: IP = record.get('Cfg').get('Debug_IP') Name = record.get('Cfg').get('Register_Name') if pltf_my['ip'].encode("utf-8") == IP.encode("utf-8") and pltf_my['name'].encode("utf-8") == Name.encode("utf-8") : tmp = 1 # print IP, Name break else: tmp = 0 if tmp == 0 : data2 = {"Cfg" : {"Debug_IP":pltf_my['ip'],"Register_Name":pltf_my['name'], "Site":"SH-CL"} } # print data2 result.append((data2)) # collection.insert_one(data2) # collection.delete_one(data) sum2 = sum2+1 collection.insert_many(result) print sum1,sum2

刚开始的时候我使用的是insert_one()方法，一条一条的插入到mongodb的集合里，但是计算出的sum有出入。

在调试的过程中我发现：

注释掉 # collection.insert_one(data1) # collection.insert_one(data2)

计算出来的sum1 = 193 sum2 = 222 这是合理的，因为ck_mysql里有193条记录，cl_mysql里有234条记录，mongod里有总共有15条，但是12条是与cl_mysql重复，所以正确。

但是当我去掉注释使用 collection.insert_one(data1) collection.insert_one(data2)时，打印出的sum1=181 sum2 = 213

也就是说少了几个数据，我不知道去哪了。

想了好多办法，于是采用insert_many()的方法插入。先定义一个list(),将每个数据(数据的类型是dict)追加到list里：reslult.append(data1/data2),最后result里就会含有所有的数据，一起插入。

于是乎，问题解决了。

可是我还是很困惑insert_one()哪里出问题了！！！！！！

以上这篇pymongo insert_many 批量插入的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。