To play around with the active record interface for this gradebook schema, we
must first create the database. In an interactive python terminal (either
"ipython model.py" or "python -i model.py"), run the following:

>>> db.init_db()

That will initialize the database with the schema in the file 'schema.sql' and
the data in 'testdata.sql'. Now try out some of these:

>>> Students.all()
>>> [s.full_name for s in Student.all()]
>>> Student.get(1).get_grades()
>>> Assignment.get(1)
>>> Assignment.where(points=20)

It is a useful exercise to uncomment line 68 of model.py to enable logging and
see the SQL that the program executes to fulfill these requests.

This branch was forked to preserve the current state as a basis for marcris/active-record-mc.