>>> from pymongo import MongoClient
>>> client = MongoClient('localhost', 27017)
>>> db = client['test-database']
>>> coll = db.test_collection    
>>> # the collection is ready now 
>>> from bson.binary import Binary
>>> import pickle
>>> # create a sample object
>>> myObj = {}
>>> myObj['demo'] = 'Some demo data'
>>> # convert it to the raw bytes
>>> thebytes = pickle.dumps(myObj)
>>> coll.insert({'bin-data': Binary(thebytes)})