git: 9front

ref: a401d8120e5d4e8fdf07fb2b7318b0fe5d2a9d53
dir: /sys/src/cmd/python/Doc/lib/sqlite3/md5func.py/

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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]