1 import sqlite3

     2 

     3 class Point(object):

     4     def __init__(self, x, y):

     5         self.x, self.y = x, y

     6 

     7     def __conform__(self, protocol):

     8         if protocol is sqlite3.PrepareProtocol:

     9             return "%f;%f" % (self.x, self.y)

    10 

    11 con = sqlite3.connect(":memory:")

    12 cur = con.cursor()

    13 

    14 p = Point(4.0, -3.2)

    15 cur.execute("select ?", (p,))

    16 print cur.fetchone()[0]