db/ndb query example

gistfile1.py

from google.appengine.ext import db, ndb

class OldBananaStand(db.Model):
    contains_money = db.BooleanProperty()

class NewBananaStand(ndb.Model):
    contains_money = ndb.BooleanProperty()

old_ones = OldBananaStand.all()
old_ones.filter('contains_money = True') # => ok!

new_ones = NewBananaStand.query()
new_ones.filter(NewBananaStand.contains_money == True) # => nope
new_ones = new_ones.filter(NewBananaStand.contains_money == True) # => ok!