ref: bacd84a05ad4885a20eedbe7bb9ba31b6a4b68b2
dir: /sys/src/cmd/python/Doc/lib/sqlite3/execute_3.py/
import sqlite3
con = sqlite3.connect("mydb")
cur = con.cursor()
who = "Yeltsin"
age = 72
cur.execute("select name_last, age from people where name_last=:who and age=:age",
locals())
print cur.fetchone()