Pymongo

Pymongo

#https://api.mongodb.com/python/current/tutorial.html

from pymongo import MongoClient

#1、链接
client=MongoClient('mongodb://root:123@localhost:27017/')
# client = MongoClient('localhost', 27017)

#2、use 数据库
db=client['db2'] #等同于：client.db1

#3、查看库下所有的集合
print(db.collection_names(include_system_collections=False))

#4、创建集合
table_user=db['userinfo'] #等同于：db.user

#5、插入文档
import datetime
user0={
    "_id":1,
    "name":"egon",
    "birth":datetime.datetime.now(),
    "age":10,
    'hobbies':['music','read','dancing'],
    'addr':{
        'country':'China',
        'city':'BJ'
    }
}

user1={
    "_id":2,
    "name":"alex",
    "birth":datetime.datetime.now(),
    "age":10,
    'hobbies':['music','read','dancing'],
    'addr':{
        'country':'China',
        'city':'weifang'
    }
}
# res=table_user.insert_many([user0,user1]).inserted_ids
# print(res)
# print(table_user.count())

#6、查找

# from pprint import pprint#格式化细
# pprint(table_user.find_one())
# for item in table_user.find():
#     pprint(item)

# print(table_user.find_one({"_id":{"$gte":1},"name":'egon'}))

#7、更新
table_user.update({'_id':1},{'name':'EGON'})

#8、传入新的文档替换旧的文档
table_user.save(
    {
        "_id":2,
        "name":'egon_xxx'
    }
)






# pip3 install pymong
from pymongo import MongoClient
from pymongo.collection import Collection
#MongoClient('mongodb://root:123@localhost:27017/')
conn=MongoClient(host="10.0.0.5",port=27017)

# use lqz
# 你用过python中的魔法方法(init,new,str) __add__
# with  __enter__  __exit__

lqz=conn.lqz  # 重写了__getattr__
# lqz=conn["lqz"] # 重写了__getitem__
#lqz.users 获取表
users=lqz.users # type:Collection
# users.find({'name':"li"})

# users.insert_many()
# users.insert_one()
# update被弃用了

# users.update()
#
# users.aggregate({},{},{})
# users.delete_many()
# users.delete_one()
# print(users.find())
# for i in users.find({'name':"li"}):
#     print(type(i))



#集成到django框架和flask框架