ref: c036d803a1e94fd3a266bd37a786394dab3b8f90
dir: /sys/src/cmd/python/Doc/lib/sqlite3/md5func.py/
import sqlite3
import md5
def md5sum(t):
return md5.md5(t).hexdigest()
con = sqlite3.connect(":memory:")
con.create_function("md5", 1, md5sum)
cur = con.cursor()
cur.execute("select md5(?)", ("foo",))
print cur.fetchone()[0]