Python操作MongoDB查詢時處理ObjectId

從bson中導入ObjectId對象，將字符串轉換成id對象查詢使用：

from bson import ObjectId
import pymongo
conn = pymongo.MongoClient('mongodb://root:abc123@127.0.0.1/admin'
str = "5sdfadsfasdfxzcasdfasdfas"
findinfo = conn.db_name.table_name.find({"_id" : ObjectId(str)})