How to query for distinct results in mongodb with python?

Question

I have a mongo collection with multiple documents, suppose the following (assume Tom had two teachers for History in 2012 for whatever reason)

{
\"name\" : \         


        

Answer 1

import pymongo
posts = pymongo.MongoClient('localhost', 27017)['db']['colection']


res = posts.find({ "geography": { "$regex": '/europe/', "$options": 'i'}}).distinct('geography')
print type(res)
res.sort()
for line in res:
    print line

refer to http://docs.mongodb.org/manual/reference/method/db.collection.distinct/ distinct returns a list , will be printed on print type(res) , you can sort a list with res.sort() , after that it will print the values of the sorted list.

Also you can query posts before select distinct values .