MongoDB基本操作之Python篇
连接数据库 MongoClient VS Connection5.2查询特定键(￡ ields)
select name, age from users where age=21
for u in db. users find((age: 21], ["name",age!): print u
for u in db. users find(fields =L"name",age ): printl
5.3排序(SORT)
pymmongo. ASCEND
NULL
博文链接：https://shixm.iteye.com/blog/381884abstract
Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple
but effective approach to ohject-oriented programming. Python's elegant syntax a
利用等差数列原理打印菱形
为实现其功能需要五个库的引用
from time import *
import urllib
from requests import get
# 利用正则表达式提取地点
from re import *
from pymongo import MongoClient
# 利用pymongo库与本地数据库建立联系
2.若数据库中该文件存在则建立联系，若无则创建
# python不能读取自定义函数中的对象，故以下内容不能在函数或子程序中
client = MongoC
