query3 mongo.py

query3 mongo.py

import pymongo
import sys

connection = pymongo.MongoClient("mongodb://localhost")
db = connection.school
scores = db.scores

def find():
  query = {'type': 'exam', 'score':{'$gt':50, '$lt':70}}
  selector = {'student_id': 1, 'score':1, '_id': 0}
    
  try:
    cursor = scores.find(query, selector)
  except:
    print 'Unexpected error:', sys.exc_info()[0]
    
  sanity = 0
  for doc in cursor:
    print doc
    sanity += 1
    if sanity > 10:
      break

find()