I am using pymongo to query for all items in a region (actually it is to query for all venues in a region on a map). I used db.command(SON()) before to search i
db.command(SON())
to_dict() Convert a SON document to a normal Python dictionary instance.
This is trickier than just dict(...) because it needs to be recursive.
http://api.mongodb.org/python/current/api/bson/son.html