【Python】pymongo链接mongo
pymongo模块链接mongo
1.链接单实例mongo
# - * - coding : utf - 8 - * -
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import datetime
import pymongo
import time
client = pymongo . MongoClient ( "127.0.0.1" , 27017 )
db = client . get_database ( "collection" )
db . authenticate ( 'collection' , '78hRdJEnJcHRb4qA' )
#print ( db . collection_names ( ) )
redefine_collection = db . get_collection ( 'redefine-collection' )
alluser=[]
demos = redefine_collection . find ( { 'event_id' : '0109001' , 'event_info.url' : { '$exists' : 'true' } , "ctime" : { "$gte" : 1525881600000}} , no_cursor_timeout = True )
for item in demos :
if len ( item [ 'event_info' ] [ 'url' ] . replace ( r '/' , '' ) . split ( '.' ) [ - 1 ] ) < = 5 :
alluser . append ( item [ 'event_info' ] [ 'url' ] . replace ( r '/' , '' ) . split ( '.' ) [ - 1 ] )
demos . close ( )
print len ( alluser )
2.连接复制集
from pymongo import MongoClient
conn = MongoClient ( [ '192.168.3.11:27017' , '192.168.3.12:27017' , '192.168.3.13:27017' ],replicaset='shard1' )
from pymongo import ReadPreference
db = conn . get_database ( 'hnrtest' , read_preference = ReadPreference . SECONDARY_PREFERRED )
3.mongo常见操作
# #####read client
# client = pymongo.MongoReplicaSetClient(['172.31.46.25:27017,172.31.43.36:27017,172.31.40.242:27017'],replicaset='shard1')
# db = client.get_database("collection")
# db.authenticate('collection', '78hRdJEnJcHRb4qA')
#
# print db.client.read_preference
# print db.client.primary
# print db.client.secondaries
# print db.client.arbiters
# print db.command('ismaster')
#####read client
client = pymongo.MongoClient(['172.31.32.223:20000'])
db = client.get_database("admin")
db.authenticate('admin', 'ggxP6tPI971K3W0r')
# print db.client.read_preference
# print db.client.primary
# print db.client.secondaries
# print db.client.arbiters
# print db.client.is_primary
# print db.command('ismaster')
# print db.command('currentOp')
# print db.command('replSetGetStatus')
# print db.list_collection_names()
statement=client.collection.get_collection('statement') ###获取对应db下的对应集合
print statement.count()
# client.collection.add_user('newTestUser', 'Test123', roles=[{'role':'readWrite','db':'collection'}]) ####添加用户
# client.collection.remove_user('newTestUser') ####删除用户
db2 = client.get_database("collection")
db2.add_user('newTestUser', 'Test123', roles=[{'role':'readWrite','db':'collection'}]) ###添加用户
print db.current_op()
# options = {'lock': True}
# db.client.fsync(**options)
# print db.client.is_locked
# ####
# print db.command('fsyncUnlock')
# print db.client.is_locked
参考：http : / / blog . 51cto . com/hnr520/1874506
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