Mongodb通过pymongo连接分片集群（Shard Cluster）

Python连接Mongodb分片集群，只需用逗号将多个主机的ip+端口分隔，写在url中：

import sys
import pymongo
from pymongo import MongoClient
from urllib import parse

# modify your settings here
username = 'your_username'
password = 'your_password'
address_list = ['1.1.1.1:1234', '1.1.1.2:1234']  # 'ip:port'

username = parse.quote_plus(username)
password = parse.quote_plus(password)
url = f"mongodb://{username}:{password}@{','.join(address_list)}/"
client = MongoClient(url)

# ping
ret = client.admin.command('ping')['ok']
if ret:
    print('ping successfully!')
else:
    print('ping failed!')
    sys.exit(1)