MongoDB(python处理及优化)

一、连接mongodb数据库

import pymongo


myclient = pymongo.MongoClient("mongodb://localhost:27017/")
# mydb = myclient["runoobdb"]
mydb = myclient.get_database("runoobdb")
# mycol = mydb["sites"]
mycol = mydb.get_collection("sites")
mycol2 = mydb["sites2"]
# dblist = myclient.list_database_names()
# print(dblist)
table_list = mydb.list_collections()
for i in table_list:
    print(i)

二、插入数据

mydict = {
   "name": "RUm", "alexa": "10222", "url": "https://www.runoob2.com"}

x = mycol.insert_one(mydict)
print(x.inserted_id)


for i in range(6, 100000):
  insert_dict = {
   "_id": i, "name": "测试" + str(i), "address": "test" + str(i)}
  mycol2.insert_one(insert_dict)
mylist = [
  {
   "name": "Taobao", "alexa": "100", "url": "https://www.taobao.com"},
  {
   "name": "QQ", "alexa": "101", "url": "https://www.qq.com"},
  {
   "name": "Facebook", "alexa": "10", "url": "https://www.facebook.com"},
  {
   "name": "知乎", "alexa": "103", "url": "https://www.zhihu.com"},
  {
   "name":