gistfile1.py

from google.appengine.ext import db

class Foo(db.Model):
    a_value = db.IntegerProperty()

def save_foo_values_1(values):
    for value in values:
        obj = Foo(a_value=value)
        obj.put()

def save_foo_values_2(values):
    foo_objects = []
    for value in values:
        obj = Foo(a_value=value)
        foo_objects.append(obj)
    db.put(foo_objects)