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如何用pymongo排序mongodb
我在查询mongoDB时尝试使用排序功能,但是失败了。相同的查询在MongoDB控制台中有效,但不适用于此处。代码如下: import pymongo from pymongo import Connection connection = Connection() db = connection.myDB print db.posts.count() for post in db.posts.find({}, {'entities.user_mentions.screen_name':1}).sort({u'entities.user_mentions.screen_name':1}): print post 我得到的错误如下: Traceback (most recent call last): File "find_ow.py", line 7, in <module> for post in db.posts.find({}, {'entities.user_mentions.screen_name':1}).sort({'entities.user_mentions.screen_name':1},1): File "/Library/Python/2.6/site-packages/pymongo-2.0.1-py2.6-macosx-10.6-universal.egg/pymongo/cursor.py", line 430, in sort File "/Library/Python/2.6/site-packages/pymongo-2.0.1-py2.6-macosx-10.6-universal.egg/pymongo/helpers.py", line 67, in …