Demo

gistfile1.py

from functools import wraps

def db(selector):
    def _funcall(function):
        @wraps(function)
        def _wrapper(row):
            got_args = {
                    'primary': { '1': ('baba', 15), '2': ('gaga', 16) },
                    'secondary': { '1': ('foo', 17), '2': ('bar', 18) },
                    }
            return function(*got_args[selector][row])
        return _wrapper
    return _funcall


def foo(a, b):
    print "Gots me", a, b

foo_db = db('primary')(foo)
foo_db_sec = db('secondary')(foo)

foo_db('1')
foo_db('2')
foo_db_sec('1')
foo_db_sec('2')