‘Collection’ object is not callable for both insert() and insert_one() method of a pymongo Database
估计centos7要用pymongo 3的版本 sudo pip install -U pymongoDEPR…
ssh_exchange_identification: Connection closed by remote host
是客户端连接数过多时，也会报这个错误。缺省情况下，SSH终端连接数最大为10个。在这种情况下，需要改SSH的配…
